Mercurial > dropbear
view libtomcrypt/src/misc/crypt/crypt_find_cipher.c @ 817:a625f9e135a4
Constant time memcmp for the hmac and password crypt
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 03 Oct 2013 22:25:30 +0800 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
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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.com */ #include "tomcrypt.h" /** @file crypt_find_cipher.c Find a cipher in the descriptor tables, Tom St Denis */ /** Find a registered cipher by name @param name The name of the cipher to look for @return >= 0 if found, -1 if not present */ int find_cipher(const char *name) { int x; LTC_ARGCHK(name != NULL); LTC_MUTEX_LOCK(<c_cipher_mutex); for (x = 0; x < TAB_SIZE; x++) { if (cipher_descriptor[x].name != NULL && !XSTRCMP(cipher_descriptor[x].name, name)) { LTC_MUTEX_UNLOCK(<c_cipher_mutex); return x; } } LTC_MUTEX_UNLOCK(<c_cipher_mutex); return -1; } /* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_find_cipher.c,v $ */ /* $Revision: 1.6 $ */ /* $Date: 2006/11/29 23:43:57 $ */