Python 3.6+hashlibfunction

hashlib.sha3_512()

hashing

The SHA3-512 hash (SHA-3 family, Keccak): 64 bytes, 128 hex digits. Same length as SHA-512, but a different algorithm.

Syntax

hashlib.sha3_512(data=b'', *, usedforsecurity=True)

SHA-3 is built differently from SHA-2 (a sponge instead of the Merkle-Damgard construction), so sha3_512() and sha512() give different values, and SHA-3 has no length-extension attack. A trap when matching other systems: Ethereum and some libraries call the original Keccak "keccak256", which is not the standardized SHA3-256 — the hashes will not match. The longest and slowest of the four: its block is only 72 bytes.

Examples

import hashlib
h = hashlib.sha3_512(b'abc')
print(h.hexdigest()[:16])  # → b751850b1a57168a
print(h.digest_size, h.block_size)  # → 64 72

import hashlib
a = hashlib.sha3_512(b'abc').hexdigest()
b = hashlib.sha512(b'abc').hexdigest()
print(len(a) == len(b), a == b)  # → True False

See also

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