diff options
Diffstat (limited to 'libtomcrypt/src/mac/pmac/pmac_memory.c')
-rw-r--r-- | libtomcrypt/src/mac/pmac/pmac_memory.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libtomcrypt/src/mac/pmac/pmac_memory.c b/libtomcrypt/src/mac/pmac/pmac_memory.c new file mode 100644 index 0000000..ca15e63 --- /dev/null +++ b/libtomcrypt/src/mac/pmac/pmac_memory.c @@ -0,0 +1,74 @@ +/* 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, tomstdenis@gmail.com, http://libtomcrypt.com + */ +#include "tomcrypt.h" + +/** + @file pmac_memory.c + PMAC implementation, process a block of memory, by Tom St Denis +*/ + +#ifdef LTC_PMAC + +/** + PMAC a block of memory + @param cipher The index of the cipher desired + @param key The secret key + @param keylen The length of the secret key (octets) + @param in The data you wish to send through PMAC + @param inlen The length of data you wish to send through PMAC (octets) + @param out [out] Destination for the authentication tag + @param outlen [in/out] The max size and resulting size of the authentication tag + @return CRYPT_OK if successful +*/ +int pmac_memory(int cipher, + const unsigned char *key, unsigned long keylen, + const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + int err; + pmac_state *pmac; + + LTC_ARGCHK(key != NULL); + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* allocate ram for pmac state */ + pmac = XMALLOC(sizeof(pmac_state)); + if (pmac == NULL) { + return CRYPT_MEM; + } + + if ((err = pmac_init(pmac, cipher, key, keylen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = pmac_process(pmac, in, inlen)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = pmac_done(pmac, out, outlen)) != CRYPT_OK) { + goto LBL_ERR; + } + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(pmac, sizeof(pmac_state)); +#endif + + XFREE(pmac); + return err; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_memory.c,v $ */ +/* $Revision: 1.5 $ */ +/* $Date: 2006/11/03 00:39:49 $ */ |