&reftitle.constants; &extension.constants; Here is a list of hashes which are currently supported by mhash. If a hash is not listed here, but is listed by mhash as supported, you can safely assume that this documentation is outdated. MHASH_MD5 MHASH_SHA1 MHASH_HAVAL256 MHASH_HAVAL192 MHASH_HAVAL160 MHASH_HAVAL128 MHASH_RIPEMD160 MHASH_GOST MHASH_TIGER MHASH_CRC32 MHASH_CRC32B