Mercurial > dropbear
view src/modes/cbc/cbc_getiv.c @ 222:36160290a1b2 libtomcrypt LTC_DB_0.46
* change include path of options.h
* don't use the constant ROL/ROR operations, since compilers
seem to have problems
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Fri, 08 Jul 2005 19:13:24 +0000 |
parents | 39d5d58461d6 |
children |
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/* 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 cbc_getiv.c CBC implementation, get IV, Tom St Denis */ #ifdef CBC /** Get the current initial vector @param IV [out] The destination of the initial vector @param len [in/out] The max size and resulting size of the initial vector @param cbc The CBC state @return CRYPT_OK if successful */ int cbc_getiv(unsigned char *IV, unsigned long *len, symmetric_CBC *cbc) { LTC_ARGCHK(IV != NULL); LTC_ARGCHK(len != NULL); LTC_ARGCHK(cbc != NULL); if ((unsigned long)cbc->blocklen > *len) { return CRYPT_BUFFER_OVERFLOW; } XMEMCPY(IV, cbc->IV, cbc->blocklen); *len = cbc->blocklen; return CRYPT_OK; } #endif /* $Source: /cvs/libtom/libtomcrypt/src/modes/cbc/cbc_getiv.c,v $ */ /* $Revision: 1.3 $ */ /* $Date: 2005/05/05 14:35:59 $ */