Mercurial > dropbear
diff crypt_register_hash.c @ 3:7faae8f46238 libtomcrypt-orig
Branch renaming
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 31 May 2004 18:25:41 +0000 |
parents | |
children | 5d99163f7e32 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/crypt_register_hash.c Mon May 31 18:25:41 2004 +0000 @@ -0,0 +1,36 @@ +/* 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" + +int register_hash(const struct _hash_descriptor *hash) +{ + int x; + + _ARGCHK(hash != NULL); + + /* is it already registered? */ + for (x = 0; x < TAB_SIZE; x++) { + if (memcmp(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor)) == 0) { + return x; + } + } + + /* find a blank spot */ + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].name == NULL) { + memcpy(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor)); + return x; + } + } + + /* no spot */ + return -1; +}