RIPEMD-160 produces the 160 bit digest of a message. For example:
>>> from Crypto.Hash import RIPEMD160
>>>
>>> h = RIPEMD160.new()
>>> h.update(b'Hello')
>>> print h.hexdigest()RIPEMD-160 stands for RACE Integrity Primitives Evaluation Message Digest with a 160 bit digest. It was invented by Dobbertin, Bosselaers, and Preneel.
Warning
This algorithm is not considered secure. Do not use it for new designs.
Warning
RIPEMD-160 is vulnerable to length-extension attacks, which are relevant if you are computing the hash of a secret message.
For instance, let's say you were planning to build a cheap MAC by concatenating a secret key to a public message m (bad idea!):
h = RIPEMD-160(m||k)
By only knowing the digest h and the length of m and k, the attacker can easily compute a second digest h':
h′ = RIPEMD-160(m||p||z)
where p is a well-known bit string and the attacker can pick a bit string z at will.
Crypto.Hash.RIPEMD160