Mercurial > dropbear
diff crypt_register_cipher.c @ 0:d7da3b1e1540 libtomcrypt
put back the 0.95 makefile which was inadvertently merged over
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 31 May 2004 18:21:40 +0000 |
parents | |
children | 5d99163f7e32 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/crypt_register_cipher.c Mon May 31 18:21:40 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_cipher(const struct _cipher_descriptor *cipher) +{ + int x; + + _ARGCHK(cipher != NULL); + + /* is it already registered? */ + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) { + return x; + } + } + + /* find a blank spot */ + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].name == NULL) { + memcpy(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor)); + return x; + } + } + + /* no spot */ + return -1; +}