$HASH_SHA1
Secure Hash Algorithm 1 (160 bit hashes); for backward compatibility.
$HASH_SHA2_384
Secure Hash Algorithm 2 (384 bit hashes)
$HASH_MD4
Message Digest 4 (128 bit hashes); for backward compatibility.
$HASH_SHA3_512
Secure Hash Algorithm 3 (512 bit hashes)
$HASH_SHA2_224
Secure Hash Algorithm 2 (224 bit hashes)
$HASH_MD5
Message Digest 5 (128 bit hashes); for backward compatibility.
$HASH_RIPEMD160
RACE Integrity Primitives Evaluation Message Digest (160 bit hashes)
$HASH_SHA3_384
Secure Hash Algorithm 3 (384 bit hashes)
$HASH_SHA2_512
Secure Hash Algorithm 2 (512 bit hashes)
$HASH_SHA2_256
Secure Hash Algorithm 2 (256 bit hashes)
$HASH_SHA3_256
Secure Hash Algorithm 3 (256 bit hashes)
$HASH_MD2
Message Digest 2 (128 bit hashes); for backward compatibility.
$HASH_SHA3_224
Secure Hash Algorithm 3 (224 bit hashes)