Mercurial > dropbear
diff ctr_getiv.c @ 15:6362d3854bb4 libtomcrypt-orig
0.96 release of LibTomCrypt
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 15 Jun 2004 14:07:21 +0000 |
parents | |
children | 5d99163f7e32 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ctr_getiv.c Tue Jun 15 14:07:21 2004 +0000 @@ -0,0 +1,30 @@ +/* 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 "mycrypt.h" + +#ifdef CTR + +int ctr_getiv(unsigned char *IV, unsigned long *len, symmetric_CTR *ctr) +{ + _ARGCHK(IV != NULL); + _ARGCHK(len != NULL); + _ARGCHK(ctr != NULL); + if ((unsigned long)ctr->blocklen > *len) { + return CRYPT_BUFFER_OVERFLOW; + } + memcpy(IV, ctr->ctr, ctr->blocklen); + *len = ctr->blocklen; + + return CRYPT_OK; +} + +#endif