uint ShaHmac::GetDigest(void* digest,const void* data,uint len,const void* key,uint klen,SHA_BITS bits){
if(bits==sha_160){
sha1_hmac((byte*)key,klen,(byte*)data,len,(byte*)digest);
}else if(bits==sha_224){
sha2_hmac((byte*)key,klen,(byte*)data,len,(byte*)digest,1);
}else if(bits==sha_256){
sha2_hmac((byte*)key,klen,(byte*)data,len,(byte*)digest,0);
}else if(bits==sha_384){
sha4_hmac((byte*)key,klen,(byte*)data,len,(byte*)digest,1);
}else if(bits==sha_512){
sha4_hmac((byte*)key,klen,(byte*)data,len,(byte*)digest,0);
}else{
_ASSERT(0);
return 0;
}
return bits;
}
// map the sha4_hmac() function with 384 bits as output
static int hmac_sha384( lua_State *L ) {
size_t zero_text = 0;
size_t *text_length = &zero_text;
size_t zero_key = 0;
size_t *key_length = &zero_key;
const unsigned char *text = (const unsigned char*) luaL_checklstring( L, 1, text_length );
const unsigned char *key = (const unsigned char*) luaL_checklstring( L, 2, key_length );
unsigned char output[64];
sha4_hmac( key, *key_length, text, *text_length, output, SHA384 );
lua_pushlstring( L, (const char *)output, 48 ); // Push 384 bit string to lua
return 1;
}
void SHA512::compute(const unsigned char* key, int keylen, const unsigned char* input, int ilen, unsigned char output[] )
{
sha4_hmac(key,keylen,input,ilen,output,0);
}
void sha512_hmac_wrap( const unsigned char *key, size_t keylen,
const unsigned char *input, size_t ilen,
unsigned char *output )
{
sha4_hmac( key, keylen, input, ilen, output, 0 );
}
