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libtomcrypt/ecb_decrypt.c

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/* LibTomCrypt, modular cryptographic library -- Tom St Denis

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 *

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 * LibTomCrypt is a library that provides various cryptographic

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 * algorithms in a highly modular and flexible manner.

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 *

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 * The library is free for all purposes without any express

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 * guarantee it works.

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 *

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 * Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org

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 */

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#include "mycrypt.h"

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#ifdef ECB

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int ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_ECB *ecb)

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{

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   int err;

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   _ARGCHK(pt != NULL);

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   _ARGCHK(ct != NULL);

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   _ARGCHK(ecb != NULL);

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   /* valid cipher? */

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   if ((err = cipher_is_valid(ecb->cipher)) != CRYPT_OK) {

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       return err;

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   }

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   _ARGCHK(cipher_descriptor[ecb->cipher].ecb_decrypt != NULL);

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   cipher_descriptor[ecb->cipher].ecb_decrypt(ct, pt, &ecb->key);

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   return CRYPT_OK;

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}

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#endif

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