1 | /* |
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2 | * Copyright (c) 2018 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 | * SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #include <sys/cdefs.h> |
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33 | #include <sys/ioctl.h> |
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34 | #include <sys/time.h> |
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35 | #include <sys/stat.h> |
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36 | #include <sys/sysctl.h> |
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37 | #include <crypto/cryptodev.h> |
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38 | |
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39 | #include <assert.h> |
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40 | #include <fcntl.h> |
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41 | #include <stdio.h> |
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42 | #include <stdlib.h> |
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43 | #include <string.h> |
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44 | #include <unistd.h> |
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45 | |
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46 | #define TEST_NAME "LIBBSD CRYPTO 1" |
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47 | |
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48 | #define KEY_LENGTH 16 |
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49 | |
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50 | typedef struct { |
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51 | int dev_fd; |
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52 | int session_fd; |
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53 | struct session2_op session; |
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54 | } test_context; |
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55 | |
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56 | static test_context test_instance; |
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57 | |
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58 | /* Test data obtained from http://cryptodev-linux.org/ */ |
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59 | |
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60 | static const char iv[AES_BLOCK_LEN]; |
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61 | |
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62 | static const char key_0[KEY_LENGTH] = { 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, |
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63 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
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64 | |
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65 | static const char plaintext_0[AES_BLOCK_LEN]; |
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66 | |
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67 | static const char ciphertext_0[AES_BLOCK_LEN] = { 0xdf, 0x55, 0x6a, 0x33, 0x43, |
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68 | 0x8d, 0xb8, 0x7b, 0xc4, 0x1b, 0x17, 0x52, 0xc5, 0x5e, 0x5e, 0x49 }; |
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69 | |
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70 | static const char key_1[KEY_LENGTH]; |
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71 | |
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72 | static const char plaintext_1[AES_BLOCK_LEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, |
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73 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00 }; |
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74 | |
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75 | static const char ciphertext_1[AES_BLOCK_LEN] = { 0xb7, 0x97, 0x2b, 0x39, 0x41, |
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76 | 0xc4, 0x4b, 0x90, 0xaf, 0xa7, 0xb2, 0x64, 0xbf, 0xba, 0x73, 0x87 }; |
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77 | |
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78 | static void |
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79 | aes_session_create(test_context *ctx, const void *key, size_t keylen) |
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80 | { |
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81 | int rv; |
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82 | |
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83 | rv = ioctl(ctx->dev_fd, CRIOGET, &ctx->session_fd); |
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84 | assert(rv == 0); |
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85 | |
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86 | memset(&ctx->session, 0, sizeof(ctx->session)); |
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87 | ctx->session.cipher = CRYPTO_AES_CBC; |
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88 | ctx->session.key = (caddr_t)key; |
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89 | ctx->session.keylen = (u_int32_t)keylen; |
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90 | ctx->session.crid = CRYPTO_FLAG_HARDWARE | CRYPTO_FLAG_SOFTWARE; |
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91 | |
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92 | rv = ioctl(ctx->session_fd, CIOCGSESSION2, &ctx->session); |
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93 | assert(rv == 0); |
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94 | } |
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95 | |
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96 | static void |
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97 | aes_session_destroy(test_context *ctx) |
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98 | { |
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99 | int rv; |
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100 | |
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101 | rv = ioctl(ctx->session_fd, CIOCFSESSION, &ctx->session.ses); |
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102 | assert(rv == 0); |
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103 | |
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104 | rv = close(ctx->session_fd); |
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105 | assert(rv == 0); |
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106 | } |
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107 | |
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108 | static void |
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109 | aes_encrypt(const test_context *ctx, const void *iv, const void *plaintext, |
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110 | void *ciphertext, size_t len) |
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111 | { |
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112 | struct crypt_op op; |
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113 | int rv; |
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114 | |
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115 | memset(&op, 0, sizeof(op)); |
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116 | op.op = COP_ENCRYPT; |
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117 | op.ses = ctx->session.ses; |
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118 | op.len = (u_int)len; |
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119 | op.src = __DECONST(void *, plaintext); |
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120 | op.dst = ciphertext; |
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121 | op.iv = __DECONST(void *, iv); |
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122 | rv = ioctl(ctx->session_fd, CIOCCRYPT, &op); |
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123 | assert(rv == 0); |
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124 | } |
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125 | |
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126 | static void |
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127 | aes_decrypt(const test_context *ctx, const void *iv, const void *ciphertext, |
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128 | void *plaintext, size_t len) |
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129 | { |
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130 | struct crypt_op op; |
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131 | int rv; |
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132 | |
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133 | memset(&op, 0, sizeof(op)); |
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134 | op.op = COP_DECRYPT; |
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135 | op.ses = ctx->session.ses; |
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136 | op.len = (u_int)len; |
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137 | op.src = __DECONST(void *, ciphertext); |
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138 | op.dst = plaintext; |
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139 | op.iv = __DECONST(void *, iv); |
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140 | rv = ioctl(ctx->session_fd, CIOCCRYPT, &op); |
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141 | assert(rv == 0); |
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142 | } |
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143 | |
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144 | static void |
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145 | aes_test(test_context *ctx, const char *key, const char *plaintext, |
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146 | const char *expected_ciphertext) |
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147 | { |
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148 | char ciphertext[AES_BLOCK_LEN]; |
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149 | char decrypted_ciphertext[AES_BLOCK_LEN]; |
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150 | |
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151 | aes_session_create(ctx, key, KEY_LENGTH); |
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152 | |
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153 | memset(ciphertext, 0xff, AES_BLOCK_LEN); |
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154 | aes_encrypt(ctx, iv, plaintext, ciphertext, AES_BLOCK_LEN); |
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155 | assert(memcmp(ciphertext, expected_ciphertext, AES_BLOCK_LEN) == 0); |
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156 | |
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157 | memset(decrypted_ciphertext, 0xff, AES_BLOCK_LEN); |
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158 | aes_decrypt(ctx, iv, ciphertext, decrypted_ciphertext, AES_BLOCK_LEN); |
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159 | assert(memcmp(decrypted_ciphertext, plaintext, AES_BLOCK_LEN) == 0); |
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160 | |
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161 | aes_session_destroy(ctx); |
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162 | } |
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163 | |
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164 | static void |
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165 | test_main(void) |
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166 | { |
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167 | test_context *ctx; |
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168 | int allow; |
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169 | int rv; |
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170 | |
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171 | ctx = &test_instance; |
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172 | |
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173 | allow = 1; |
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174 | rv = sysctlbyname("kern.cryptodevallowsoft", NULL, NULL, &allow, |
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175 | sizeof(allow)); |
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176 | assert(rv == 0); |
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177 | |
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178 | ctx->dev_fd = open("/dev/crypto", O_RDWR); |
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179 | assert(ctx->dev_fd >= 0); |
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180 | |
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181 | aes_test(ctx, key_0, plaintext_0, ciphertext_0); |
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182 | aes_test(ctx, key_1, plaintext_1, ciphertext_1); |
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183 | |
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184 | rv = close(ctx->dev_fd); |
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185 | assert(rv == 0); |
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186 | |
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187 | exit(0); |
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188 | } |
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189 | |
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190 | #include <rtems/bsd/bsd.h> |
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191 | |
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192 | #include <machine/rtems-bsd-nexus-bus.h> |
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193 | |
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194 | SYSINIT_MODULE_REFERENCE(cryptodev); |
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195 | |
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196 | RTEMS_BSD_DEFINE_NEXUS_DEVICE(cryptosoft, 0, 0, NULL); |
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197 | |
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198 | #include <rtems/bsd/test/default-init.h> |
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