Module BLAKE2s
BLAKE2s cryptographic hash algorithm.
BLAKE2s is an optimized variant of BLAKE, one of the SHA-3 candidates that
made it to the final round of the NIST hash competition.
The algorithm uses 32 bit words, and it therefore works best
on 32-bit platforms. The digest size ranges from 8 to 256 bits.
>>> from Cryptodome.Hash import BLAKE2s
>>>
>>> h_obj = BLAKE2s.new(digest_bits=256)
>>> h_obj.update(b'Some data')
>>> print h_obj.hexdigest()
Optionally, BLAKE2s can work as a cryptographic MAC when initialized
with a secret key.
>>> from Cryptodome.Hash import BLAKE2s
>>>
>>> mac = BLAKE2s.new(digest_bits=128, key=b'secret')
>>> mac.update(b'Some data')
>>> print mac.hexdigest()
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new(**kwargs)
Return a new instance of a BLAKE2s hash object. |
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Return a new instance of a BLAKE2s hash object.
- Parameters:
data (byte string) - The very first chunk of the message to hash.
It is equivalent to an early call to BLAKE2s_Hash.update().
digest_bytes (integer) - The size of the digest, in bytes (1 to 32).
digest_bits (integer) - The size of the digest, in bits (8 to 256, in steps of 8).
key (byte string) - The key to use to compute the MAC (1 to 32 bytes).
If not specified, no key will be used.
update_after_digest (boolean) - Optional. By default, a hash object cannot be updated anymore after
the digest is computed. When this flag is True, such check
is no longer enforced.
- Returns:
- A BLAKE2s_Hash object
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