Mercurial > dropbear
diff libtomcrypt/src/modes/ecb/ecb_encrypt.c @ 285:1b9e69c058d2
propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
to branch 'au.asn.ucc.matt.dropbear' (head fdf4a7a3b97ae5046139915de7e40399cceb2c01)
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 08 Mar 2006 13:23:58 +0000 |
parents | |
children | 0cbe8f6dbf9e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtomcrypt/src/modes/ecb/ecb_encrypt.c Wed Mar 08 13:23:58 2006 +0000 @@ -0,0 +1,59 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, [email protected], http://libtomcrypt.org + */ +#include "tomcrypt.h" + +/** + @file ecb_encrypt.c + ECB implementation, encrypt a block, Tom St Denis +*/ + +#ifdef ECB + +/** + ECB encrypt + @param pt Plaintext + @param ct [out] Ciphertext + @param len The number of octets to process (must be multiple of the cipher block size) + @param ecb ECB state + @return CRYPT_OK if successful +*/ +int ecb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_ECB *ecb) +{ + int err; + LTC_ARGCHK(pt != NULL); + LTC_ARGCHK(ct != NULL); + LTC_ARGCHK(ecb != NULL); + if ((err = cipher_is_valid(ecb->cipher)) != CRYPT_OK) { + return err; + } + if (len % cipher_descriptor[ecb->cipher].block_length) { + return CRYPT_INVALID_ARG; + } + + /* check for accel */ + if (cipher_descriptor[ecb->cipher].accel_ecb_encrypt != NULL) { + cipher_descriptor[ecb->cipher].accel_ecb_encrypt(pt, ct, len / cipher_descriptor[ecb->cipher].block_length, &ecb->key); + } else { + while (len) { + cipher_descriptor[ecb->cipher].ecb_encrypt(pt, ct, &ecb->key); + pt += cipher_descriptor[ecb->cipher].block_length; + ct += cipher_descriptor[ecb->cipher].block_length; + len -= cipher_descriptor[ecb->cipher].block_length; + } + } + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/modes/ecb/ecb_encrypt.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2005/05/05 14:35:59 $ */