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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
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2 * |
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3 * LibTomCrypt is a library that provides various cryptographic |
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4 * algorithms in a highly modular and flexible manner. |
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5 * |
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6 * The library is free for all purposes without any express |
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7 * guarantee it works. |
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8 * |
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9 * Tom St Denis, [email protected], http://libtomcrypt.org |
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10 */ |
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11 #include "mycrypt.h" |
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12 |
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13 #ifdef ECB |
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14 |
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15 int ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_ECB *ecb) |
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16 { |
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17 int err; |
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18 _ARGCHK(pt != NULL); |
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19 _ARGCHK(ct != NULL); |
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20 _ARGCHK(ecb != NULL); |
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21 |
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15
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22 /* valid cipher? */ |
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23 if ((err = cipher_is_valid(ecb->cipher)) != CRYPT_OK) { |
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24 return err; |
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25 } |
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26 _ARGCHK(cipher_descriptor[ecb->cipher].ecb_decrypt != NULL); |
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27 |
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28 cipher_descriptor[ecb->cipher].ecb_decrypt(ct, pt, &ecb->key); |
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29 return CRYPT_OK; |
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30 } |
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31 |
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32 #endif |
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33 |
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34 |
