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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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14 |
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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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28 |
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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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38 |
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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 } |
