annotate modes_test.c @ 18:712dd6dfb0eb libtomcrypt

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author Matt Johnston <matt@ucc.asn.au>
date Tue, 15 Jun 2004 14:34:07 +0000
parents 6362d3854bb4
children
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1 /* test CFB/OFB/CBC modes */
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2 #include "test.h"
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3
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4 int modes_test(void)
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5 {
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6 unsigned char pt[64], ct[64], tmp[64], key[16], iv[16];
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7 int x, cipher_idx;
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8 symmetric_CBC cbc;
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9
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10 /* make a random pt, key and iv */
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11 yarrow_read(pt, 64, &test_yarrow);
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12 yarrow_read(key, 16, &test_yarrow);
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13 yarrow_read(iv, 16, &test_yarrow);
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15 /* test CBC mode */
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16 cipher_idx = find_cipher("aes");
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17 if (cipher_idx == -1) {
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18 printf("test requires AES");
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19 return 1;
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20 }
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21
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22
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23 /* encode the block */
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24 DO(cbc_start(cipher_idx, iv, key, 16, 0, &cbc));
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25 for (x = 0; x < 4; x++) {
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26 DO(cbc_encrypt(pt+x*16, ct+x*16, &cbc));
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27 }
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29 /* decode the block */
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30 DO(cbc_start(cipher_idx, iv, key, 16, 0, &cbc));
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31 for (x = 0; x < 4; x++) {
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32 DO(cbc_decrypt(ct+x*16, tmp+x*16, &cbc));
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33 }
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34 if (memcmp(tmp, pt, 64) != 0) {
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35 printf("CBC failed");
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36 return 1;
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37 }
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39 /*
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40 extern int cbc_start(int cipher, const unsigned char *IV, const unsigned char *key,
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41 int keylen, int num_rounds, symmetric_CBC *cbc);
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42 extern int cbc_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_CBC *cbc);
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43 extern int cbc_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_CBC *cbc);
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44 */
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45
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46 }