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annotate sencrypt.c @ 21:5f9dc8f3c53e version-3

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Release version 3
author Guido Berhoerster <guido+sencrypt@berhoerster.name>
date Mon, 05 Aug 2019 11:19:02 +0200
parents c45f17f58de1
children
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rev   line source
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1 /*
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cc930aa0f3c2 Perform 50000 iterations with the PBKDF2 hash function when creating new files
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2 * Copyright (C) 2016 Guido Berhoerster <guido+sencrypt@berhoerster.name>
0
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3 *
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4 * Permission is hereby granted, free of charge, to any person obtaining
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5 * a copy of this software and associated documentation files (the
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6 * "Software"), to deal in the Software without restriction, including
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7 * without limitation the rights to use, copy, modify, merge, publish,
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8 * distribute, sublicense, and/or sell copies of the Software, and to
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9 * permit persons to whom the Software is furnished to do so, subject to
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10 * the following conditions:
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11 *
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12 * The above copyright notice and this permission notice shall be included
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13 * in all copies or substantial portions of the Software.
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14 *
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 */
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23
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24 #include <stdio.h>
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25 #include <string.h>
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26 #include <stdint.h>
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27 #include <stdbool.h>
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28 #include <unistd.h>
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29 #include <limits.h>
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30 #include <libgen.h>
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31 #include <arpa/inet.h>
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32 #include <sys/stat.h>
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33 #include <openssl/conf.h>
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34 #include <openssl/rand.h>
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35 #include <openssl/evp.h>
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36 #include <openssl/err.h>
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37
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38 #ifdef HAVE_ERR_H
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39 #include <err.h>
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40 #endif /* HAVE_ERR_H */
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abb770754967 Use C99-compatible version of snprintf on UnixWare 7
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41 #include "compat.h"
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42
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43 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
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44
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45 #define EXIT_USAGE 2
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46
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47 #define SENCRYPT_FORMAT_VERSION 1
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00ca3ee8e310 Perform 500000 iterations with the PBKDF2 hash function when creating new files
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48 #define PBKDF2_ITERATIONS 500000
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49 #define SALT_LEN 16
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50 #define BUFFER_SIZE (16 * 1024)
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51 #define MAX_PASSWORD_LEN 256
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52
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53 enum {
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54 CMD_SENCRYPT,
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55 CMD_SDECRYPT
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56 };
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57
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58 static void
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59 openssl_warn(void) {
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60 unsigned long errcode;
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61
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62 while ((errcode = ERR_get_error()) != 0) {
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63 warnx("%s", ERR_error_string(errcode, NULL));
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64 }
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65 }
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66
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67 static size_t
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68 read_keyfile(const char *filename, unsigned char *key, size_t key_size_max)
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69 {
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70 size_t keyfile_size = 0;
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71 FILE *fp = NULL;
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72
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73 fp = fopen(filename, "r");
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74 if (fp == NULL) {
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75 warn("could not open key file \"%s\"", filename);
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76 goto out;
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77 }
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78
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c45f17f58de1 Simplify key file reading
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79 keyfile_size = fread(key, 1, key_size_max, fp);
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80 if (ferror(fp)) {
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81 warn("failed to read key file \"%s\"", filename);
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82 goto out;
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83 } else if (!feof(fp) || (keyfile_size < 1)) {
0
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84 warnx("invalid key size");
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85 goto out;
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86 }
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87
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88 out:
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89 if (fp != NULL) {
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90 fclose(fp);
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91 }
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92
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93 return (keyfile_size);
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94 }
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95
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96 static int
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97 find_algorithm(const char *algo_name, const EVP_CIPHER **cipher_ptr,
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98 size_t *key_len_ptr)
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99 {
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100 int retval = 0;
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101 const EVP_CIPHER *cipher = NULL;
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102 size_t key_len = *key_len_ptr;
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103
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104 if (strcmp(algo_name, "aes") == 0) {
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105 switch (key_len) {
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106 case 0:
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107 key_len = 16;
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07f525330bc7 Mark fallthrough case
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108 /* FALLTHROUGH */
0
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109 case 16:
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110 cipher = EVP_aes_128_cbc();
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111 break;
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112 case 24:
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113 cipher = EVP_aes_192_cbc();
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114 break;
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115 case 32:
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116 cipher = EVP_aes_256_cbc();
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117 break;
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118 default:
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119 warnx("invalid key length %zu", key_len);
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120 retval = -1;
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121 }
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122 } else if (strcmp(algo_name, "arcfour") == 0) {
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123 if (key_len == 0) {
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124 key_len = 16;
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125 cipher = EVP_rc4();
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126 } else if (key_len <= EVP_MAX_KEY_LENGTH) {
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127 /*
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128 * for RC4 keys are not used verbatim but dervied using
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129 * PBKDF2 with a hardcoded key length of 128 bit
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130 */
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131 key_len = 16;
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132 cipher = EVP_rc4();
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133 } else {
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134 warnx("invalid key length %zu", key_len);
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135 retval = -1;
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136 }
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137 } else if (strcmp(algo_name, "des") == 0) {
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138 if (key_len == 0) {
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139 key_len = 8;
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140 cipher = EVP_des_cbc();
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141 } else if (key_len == 8) {
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142 cipher = EVP_des_cbc();
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143 } else {
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144 warnx("invalid key length %zu", key_len);
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145 retval = -1;
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146 }
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147 } else if (strcmp(algo_name, "3des") == 0) {
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parents:
diff changeset
148 if (key_len == 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
149 key_len = 24;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
150 cipher = EVP_des_ede3_cbc();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
151 } else if (key_len == 24) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
152 cipher = EVP_des_ede3_cbc();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
153 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
154 warnx("invalid key length %zu", key_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
155 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
156 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
157 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
158 warnx("unknown algorithm \"%s\"", algo_name);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
159 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
160 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
161
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
162 *cipher_ptr = cipher;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
163 *key_len_ptr = key_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
164
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
165 return (retval);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
166 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
167
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
168 static int
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
169 read_header(BIO *bio_in, uint32_t *iterations, unsigned char *iv, int iv_len,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
170 unsigned char *salt, int salt_len)
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
171 {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
172 int read_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
173 uint32_t version;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
174 int retval = 0;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
175
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
176 read_len = BIO_read(bio_in, &version, sizeof (version));
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
177 if (read_len != sizeof (version)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
178 warnx("failed to read version from input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
179 if (read_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
180 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
181 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
182 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
183 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
184 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
185 version = htonl(version);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
186 if (version != SENCRYPT_FORMAT_VERSION) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
187 warnx("unknown format version %d", version);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
188 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
189 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
190 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
191
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
192 read_len = BIO_read(bio_in, iterations, sizeof (*iterations));
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
193 if (read_len != sizeof (*iterations)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
194 warnx("failed to read iterations from input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
195 if (read_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
196 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
197 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
198 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
199 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
200 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
201 *iterations = htonl(*iterations);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
202 if ((*iterations == 0) || ((sizeof (int) <= sizeof (uint32_t)) &&
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
203 (*iterations > INT_MAX))) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
204 warnx("invalid number of iterations");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
205 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
206 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
207 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
208
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
209 if (iv_len > 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
210 read_len = BIO_read(bio_in, iv, iv_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
211 if (read_len != iv_len) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
212 warnx("failed to read IV from input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
213 if (read_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
214 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
215 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
216 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
217 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
218 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
219 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
220
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
221 read_len = BIO_read(bio_in, salt, salt_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
222 if (read_len != salt_len) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
223 warnx("failed to read salt from input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
224 if (read_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
225 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
226 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
227 retval = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
228 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
229 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
230
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
231 out:
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
232 return (retval);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
233 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
234
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
235 static int
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
236 sencrypt(const EVP_CIPHER *cipher, BIO *bio_in, BIO *bio_out,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
237 const unsigned char *key, size_t key_len, const unsigned char *iv,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
238 const unsigned char *salt)
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
239 {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
240 int retval = 0;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
241 uint32_t version;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
242 uint32_t iterations;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
243 int iv_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
244 int write_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
245 int read_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
246 BIO *bio_cipher = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
247 char *buf = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
248 EVP_CIPHER_CTX *cipher_ctx;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
249
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
250 /* set up cipher filter */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
251 bio_cipher = BIO_new(BIO_f_cipher());
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
252 BIO_set_cipher(bio_cipher, cipher, NULL, NULL, 1);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
253 BIO_get_cipher_ctx(bio_cipher, &cipher_ctx);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
254 if (EVP_CIPHER_CTX_set_key_length(cipher_ctx, (int)key_len) != 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
255 warnx("failed to set key length");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
256 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
257 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
258 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
259 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
260 if (EVP_CipherInit_ex(cipher_ctx, NULL, NULL, key, iv, 1) != 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
261 warnx("failed to initialize cipher");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
262 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
263 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
264 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
265 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
266 BIO_push(bio_cipher, bio_out);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
267
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
268 /* write header */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
269 version = htonl(SENCRYPT_FORMAT_VERSION);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
270 write_len = BIO_write(bio_out, &version, sizeof (version));
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
271 if (write_len != sizeof (version)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
272 warnx("failed to write version to output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
273 if (write_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
274 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
275 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
276 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
277 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
278 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
279
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
280 iterations = htonl(PBKDF2_ITERATIONS);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
281 write_len = BIO_write(bio_out, &iterations, sizeof (iterations));
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
282 if (write_len != sizeof (iterations)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
283 warnx("failed to write iterations to output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
284 if (write_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
285 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
286 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
287 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
288 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
289 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
290
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
291 iv_len = EVP_CIPHER_iv_length(cipher);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
292 if (iv_len > 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
293 write_len = BIO_write(bio_out, iv, iv_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
294 if (write_len != iv_len) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
295 warnx("failed to write IV to output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
296 if (write_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
297 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
298 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
299 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
300 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
301 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
302 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
303
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
304 write_len = BIO_write(bio_out, salt, SALT_LEN);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
305 if (write_len != SALT_LEN) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
306 warnx("failed to write salt to output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
307 if (write_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
308 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
309 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
310 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
311 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
312 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
313
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
314 if (BIO_flush(bio_out) < 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
315 warnx("failed to flush output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
316 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
317 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
318 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
319 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
320
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
321 buf = malloc(BUFFER_SIZE);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
322 if (buf == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
323 warn(NULL);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
324 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
325 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
326 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
327
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
328 /* encrypt data */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
329 while ((read_len = BIO_read(bio_in, buf, BUFFER_SIZE)) > 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
330 if ((write_len = BIO_write(bio_cipher, buf, read_len)) !=
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
331 read_len) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
332 warnx("failed to write to output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
333 if (write_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
334 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
335 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
336 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
337 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
338 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
339 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
340 if (read_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
341 warnx("failed to read from input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
342 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
343 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
344 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
345 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
346
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
347 if (BIO_flush(bio_cipher) < 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
348 warnx("failed to flush output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
349 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
350 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
351 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
352 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
353
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
354 out:
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
355 free(buf);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
356
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
357 if (bio_cipher != NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
358 BIO_pop(bio_cipher);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
359 BIO_free(bio_cipher);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
360 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
361
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
362 return (retval);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
363 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
364
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
365 static int
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
366 sdecrypt(const EVP_CIPHER *cipher, BIO *bio_in, BIO *bio_out,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
367 const unsigned char *key, size_t key_len, const unsigned char *iv)
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
368 {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
369 int read_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
370 BIO *bio_cipher = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
371 int write_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
372 char *buf = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
373 EVP_CIPHER_CTX *cipher_ctx;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
374 int retval = 0;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
375
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
376 buf = malloc(BUFFER_SIZE);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
377 if (buf == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
378 warn(NULL);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
379 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
380 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
381 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
382
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
383 /* set up cipher filter */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
384 bio_cipher = BIO_new(BIO_f_cipher());
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
385 BIO_set_cipher(bio_cipher, cipher, NULL, NULL, 0);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
386 BIO_get_cipher_ctx(bio_cipher, &cipher_ctx);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
387 if (EVP_CIPHER_CTX_set_key_length(cipher_ctx, (int)key_len) != 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
388 warnx("failed to set key length");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
389 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
390 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
391 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
392 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
393 if (EVP_CipherInit_ex(cipher_ctx, NULL, NULL, key, iv, 0) != 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
394 warnx("failed to initialize cipher");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
395 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
396 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
397 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
398 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
399 BIO_push(bio_cipher, bio_in);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
400
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
401 /* decrypt data */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
402 while ((read_len = BIO_read(bio_cipher, buf, BUFFER_SIZE)) > 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
403 if ((write_len = BIO_write(bio_out, buf, read_len)) !=
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
404 read_len) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
405 warnx("failed to write to to output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
406 if (write_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
407 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
408 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
409 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
410 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
411 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
412 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
413 if (read_len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
414 warnx("failed to read from input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
415 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
416 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
417 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
418 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
419
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
420 if (BIO_flush(bio_out) < 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
421 warnx("failed to flush output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
422 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
423 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
424 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
425 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
426
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
427 if (BIO_get_cipher_status(bio_cipher) == 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
428 warnx("decryption failed");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
429 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
430 retval = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
431 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
432 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
433
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
434 out:
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
435 free(buf);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
436
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
437 if (bio_cipher != NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
438 BIO_pop(bio_cipher);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
439 BIO_free(bio_cipher);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
440 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
441
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
442 return (retval);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
443 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
444
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
445 static void
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
446 list_algorithms(void)
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
447 {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
448 printf("Algorithm Keysize: Min Max (bits)\n"
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
449 "------------------------------------------\n");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
450 printf("%-15s %5u %5u\n", "aes", 128, 256);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
451 printf("%-15s %5u %5u\n", "arcfour", 8,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
452 EVP_MAX_KEY_LENGTH * 8);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
453 printf("%-15s %5u %5u\n", "des", 64, 64);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
454 printf("%-15s %5u %5u\n", "3des", 192, 192);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
455 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
456
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
457 static void
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
458 usage(int cmd)
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
459 {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
460 if (cmd == CMD_SENCRYPT) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
461 fprintf(stderr, "usage: sencrypt -l | [-v] -a algorithm "
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
462 "[-k key_file] [-i input_file] [-o output_file]\n");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
463 } else if (cmd == CMD_SDECRYPT) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
464 fprintf(stderr, "usage: sdecrypt -l | [-v] -a algorithm "
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
465 "[-k key_file] [-i input_file] [-o output_file]\n");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
466 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
467 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
468
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
469 int
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
470 main(int argc, char *argv[])
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
471 {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
472 char *progname;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
473 int cmd;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
474 int c;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
475 bool aflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
476 char *algo_name = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
477 bool is_algo_rc4 = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
478 bool iflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
479 char *in_filename = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
480 bool kflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
481 char *key_filename = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
482 bool lflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
483 bool oflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
484 char *out_filename = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
485 bool vflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
486 bool errflag = false;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
487 unsigned char key[EVP_MAX_KEY_LENGTH];
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
488 size_t key_len = 0;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
489 size_t key_file_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
490 const EVP_CIPHER *cipher;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
491 BIO *bio_in = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
492 uint32_t iterations = PBKDF2_ITERATIONS;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
493 unsigned char iv[EVP_MAX_IV_LENGTH];
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
494 unsigned char salt[SALT_LEN];
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
495 BIO *bio_out = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
496 int need_tmpfile = 0;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
497 FILE *fp_in;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
498 struct stat statbuf_in;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
499 struct stat statbuf_out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
500 int fd_tmp = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
501 FILE *fp_tmp = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
502 char *out_filename_tmp = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
503 char *out_dir = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
504 char *tmp_filename = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
505 int len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
506 mode_t old_mode;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
507 char pwdata[MAX(MAX_PASSWORD_LEN, EVP_MAX_KEY_LENGTH)];
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
508 size_t pwdata_len = 0;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
509 int status = EXIT_SUCCESS;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
510
16
d9c4bdc004d2 Add support for OpenSSL 1.1
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 15
diff changeset
511 #if OPENSSL_VERSION_NUMBER < 0x10100000L
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
512 /* initialize OpenSSL */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
513 OpenSSL_add_all_algorithms();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
514 ERR_load_crypto_strings();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
515 OPENSSL_config(NULL);
16
d9c4bdc004d2 Add support for OpenSSL 1.1
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 15
diff changeset
516 #endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
517
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
518 progname = strrchr(argv[0], '/');
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
519 progname = (progname != NULL) ? progname + 1 : argv[0];
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
520 if ((strcmp(progname, "sencrypt") == 0) ||
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
521 (strcmp(progname, "encrypt") == 0)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
522 cmd = CMD_SENCRYPT;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
523 } else if ((strcmp(progname, "sdecrypt") == 0) ||
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
524 (strcmp(progname, "decrypt") == 0)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
525 cmd = CMD_SDECRYPT;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
526 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
527 fprintf(stderr, "invalid command name");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
528 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
529 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
530 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
531
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
532 while (!errflag && (c = getopt(argc, argv, "a:i:k:lo:v")) != -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
533 switch (c) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
534 case 'a':
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
535 aflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
536 algo_name = optarg;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
537 is_algo_rc4 = (strcmp(algo_name, "arcfour") == 0);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
538 break;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
539 case 'i':
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
540 iflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
541 in_filename = optarg;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
542 break;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
543 case 'k':
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
544 kflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
545 key_filename = optarg;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
546 break;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
547 case 'l':
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
548 lflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
549 break;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
550 case 'o':
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
551 oflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
552 out_filename = optarg;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
553 break;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
554 case 'v':
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
555 vflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
556 break;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
557 default:
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
558 errflag = true;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
559 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
560 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
561 if (errflag || (!lflag && !aflag) || (lflag && aflag) ||
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
562 (argc > optind)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
563 usage(cmd);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
564 status = EXIT_USAGE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
565 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
566 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
567
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
568 if (lflag) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
569 list_algorithms();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
570 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
571 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
572
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
573 if (kflag) {
20
c45f17f58de1 Simplify key file reading
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 18
diff changeset
574 key_file_len = read_keyfile(key_filename, key, sizeof (key));
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
575 if (key_file_len < 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
576 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
577 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
578 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
579 key_len = key_file_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
580 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
581 if (EVP_read_pw_string(pwdata, sizeof (pwdata), "Enter key:",
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
582 (cmd == CMD_SENCRYPT) ? 1 : 0) != 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
583 warnx("could not read passphrase");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
584 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
585 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
586 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
587 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
588 pwdata_len = strlen(pwdata);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
589 if (pwdata_len < 1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
590 warnx("invalid passphrase");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
591 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
592 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
593 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
594 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
595
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
596 /* the cipher is determined based on name and length of the key file */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
597 if (find_algorithm(algo_name, &cipher, &key_len) == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
598 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
599 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
600 }
10
8e9dd5328b5a Print a warning message when using an insecure algorithm
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 9
diff changeset
601 if ((cmd == CMD_SENCRYPT) && ((cipher != EVP_aes_128_cbc()) &&
8e9dd5328b5a Print a warning message when using an insecure algorithm
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 9
diff changeset
602 (cipher != EVP_aes_192_cbc()) && (cipher != EVP_aes_256_cbc()))) {
8e9dd5328b5a Print a warning message when using an insecure algorithm
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 9
diff changeset
603 fprintf(stderr, "warning: the %s algorithm is no longer "
8e9dd5328b5a Print a warning message when using an insecure algorithm
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 9
diff changeset
604 "considered secure", algo_name);
8e9dd5328b5a Print a warning message when using an insecure algorithm
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 9
diff changeset
605 }
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
606
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
607 if (iflag) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
608 bio_in = BIO_new_file(in_filename, "r");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
609 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
610 bio_in = BIO_new_fp(stdin, BIO_NOCLOSE);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
611 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
612 if (bio_in == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
613 warnx("could not open input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
614 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
615 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
616 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
617 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
618
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
619 if (cmd == CMD_SENCRYPT) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
620 /* generate random salt and IV */
3
f230c550e261 Correct check for errors from RAND_bytes()
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 0
diff changeset
621 if ((RAND_bytes(salt, sizeof (salt)) != 1) ||
f230c550e261 Correct check for errors from RAND_bytes()
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 0
diff changeset
622 (RAND_bytes(iv, EVP_CIPHER_iv_length(cipher)) != 1)) {
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
623 /* not enough entropy or unknown error */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
624 warnx("failed to generate random data");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
625 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
626 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
627 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
628 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
629 read_header(bio_in, &iterations, iv,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
630 EVP_CIPHER_iv_length(cipher), salt, (int)sizeof (salt));
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
631 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
632
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
633 /*
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
634 * if no keyfile was given or the RC4 cipher is used, derive the key
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
635 * from the password and salt
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
636 */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
637 if (kflag && is_algo_rc4) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
638 memcpy(pwdata, key, key_file_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
639 pwdata_len = key_file_len;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
640 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
641 if (!kflag || is_algo_rc4) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
642 if (PKCS5_PBKDF2_HMAC_SHA1(pwdata, (int)pwdata_len, salt,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
643 sizeof (salt), (int)iterations, (int)key_len, key) == 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
644 warnx("failed to generate key");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
645 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
646 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
647 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
648 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
649
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
650 if (oflag) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
651 /*
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
652 * if input and output files are identical, create and write the
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
653 * output to a temporary file for the output which is then
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
654 * renamed to out_filename
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
655 */
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
656 if (iflag) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
657 BIO_get_fp(bio_in, &fp_in);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
658 if (fstat(fileno(fp_in), &statbuf_in) == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
659 warn("could not stat input file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
660 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
661 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
662 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
663 if (stat(out_filename, &statbuf_out) == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
664 if (errno != ENOENT) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
665 warn("could not stat output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
666 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
667 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
668 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
669 } else if ((statbuf_in.st_ino == statbuf_out.st_ino) &&
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
670 (statbuf_in.st_dev == statbuf_out.st_dev)) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
671 need_tmpfile = 1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
672 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
673 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
674
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
675 if (need_tmpfile) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
676 out_filename_tmp = strdup(out_filename);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
677 if (out_filename_tmp == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
678 warn(NULL);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
679 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
680 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
681 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
682 out_dir = dirname(out_filename_tmp);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
683 len = snprintf(NULL, 0, "%s/sencryptXXXXXX", out_dir);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
684 if (len < 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
685 warn(NULL);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
686 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
687 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
688 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
689 tmp_filename = malloc((size_t)len + 1);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
690 if (tmp_filename == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
691 warn(NULL);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
692 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
693 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
694 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
695 if (snprintf(tmp_filename, (size_t)len + 1,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
696 "%s/sencryptXXXXXX", out_dir) != len) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
697 warn(NULL);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
698 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
699 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
700 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
701 old_mode = umask(077);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
702 fd_tmp = mkstemp(tmp_filename);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
703 umask(old_mode);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
704 if (fd_tmp == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
705 warn("could not create temporary file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
706 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
707 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
708 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
709 fp_tmp = fdopen(fd_tmp, "w");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
710 if (fp_tmp == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
711 warn("could not open temporary file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
712 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
713 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
714 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
715 fd_tmp = -1;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
716 bio_out = BIO_new_fp(fp_tmp, BIO_CLOSE);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
717 if (bio_out == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
718 warnx("could not open temporary file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
719 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
720 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
721 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
722 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
723 fp_tmp = NULL;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
724 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
725 old_mode = umask(077);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
726 bio_out = BIO_new_file(out_filename, "w");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
727 umask(old_mode);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
728 if (bio_out == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
729 warnx("could not open output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
730 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
731 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
732 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
733 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
734 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
735 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
736 bio_out = BIO_new_fp(stdout, BIO_NOCLOSE);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
737 if (bio_out == NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
738 warnx("could not open output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
739 openssl_warn();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
740 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
741 goto out;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
742 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
743 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
744
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
745 if (cmd == CMD_SENCRYPT) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
746 if (sencrypt(cipher, bio_in, bio_out, key, key_len,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
747 iv, salt) == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
748 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
749 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
750 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
751 if (sdecrypt(cipher, bio_in, bio_out, key, key_len,
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
752 iv) == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
753 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
754 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
755 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
756
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
757 out:
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
758 OPENSSL_cleanse(pwdata, pwdata_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
759 OPENSSL_cleanse(key, key_len);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
760
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
761 if (fd_tmp != -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
762 close(fd_tmp);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
763 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
764
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
765 if (fp_tmp != NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
766 fclose(fp_tmp);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
767 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
768
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
769 if (bio_in != NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
770 BIO_free_all(bio_in);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
771 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
772
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
773 if (bio_out != NULL) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
774 BIO_free_all(bio_out);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
775
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
776 if (status == 0) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
777 if (need_tmpfile) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
778 if (rename(tmp_filename, out_filename) == -1) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
779 warn("could not create output file");
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
780 status = EXIT_FAILURE;
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
781 unlink(tmp_filename);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
782 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
783 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
784 } else {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
785 if (need_tmpfile) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
786 unlink(tmp_filename);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
787 } else if (oflag) {
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
788 unlink(out_filename);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
789 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
790 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
791 }
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
792
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
793 free(out_filename_tmp);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
794 free(tmp_filename);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
795
16
d9c4bdc004d2 Add support for OpenSSL 1.1
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 15
diff changeset
796 #if OPENSSL_VERSION_NUMBER < 0x10100000L
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
797 EVP_cleanup();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
798 ERR_free_strings();
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
799 CONF_modules_free();
16
d9c4bdc004d2 Add support for OpenSSL 1.1
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents: 15
diff changeset
800 #endif /* OPENSSL_VERSION_NUMBER < 0x10100000L */
0
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
801
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
802 exit(status);
73af139d1a94 Initial revision
Guido Berhoerster <guido+sencrypt@berhoerster.name>
parents:
diff changeset
803 }