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Issue #16113: Add SHA-3 and SHAKE support to hashlib module.

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This commit is contained in:
Christian Heimes 2016-09-07 11:58:24 +02:00
parent dfb9ef1357
commit 6fe2a75b64
26 changed files with 6495 additions and 19 deletions
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17
Lib/hashlib.py
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@ -11,7 +11,8 @@ new(name, data=b'', **kwargs) - returns a new hash object implementing the
Named constructor functions are also available, these are faster
than using new(name):
md5(), sha1(), sha224(), sha256(), sha384(), sha512(), blake2b(), and blake2s()
md5(), sha1(), sha224(), sha256(), sha384(), sha512(), blake2b(), blake2s(),
sha3_224, sha3_256, sha3_384, sha3_512, shake_128, and shake_256.
More algorithms may be available on your platform but the above are guaranteed
to exist. See the algorithms_guaranteed and algorithms_available attributes
@ -55,7 +56,10 @@ More condensed:
# This tuple and __get_builtin_constructor() must be modified if a new
# always available algorithm is added.
__always_supported = ('md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512',
'blake2b', 'blake2s')
'blake2b', 'blake2s',
'sha3_224', 'sha3_256', 'sha3_384', 'sha3_512',
'shake_128', 'shake_256')
algorithms_guaranteed = set(__always_supported)
algorithms_available = set(__always_supported)
@ -90,6 +94,15 @@ def __get_builtin_constructor(name):
import _blake2
cache['blake2b'] = _blake2.blake2b
cache['blake2s'] = _blake2.blake2s
elif name in {'sha3_224', 'sha3_256', 'sha3_384', 'sha3_512',
'shake_128', 'shake_256'}:
import _sha3
cache['sha3_224'] = _sha3.sha3_224
cache['sha3_256'] = _sha3.sha3_256
cache['sha3_384'] = _sha3.sha3_384
cache['sha3_512'] = _sha3.sha3_512
cache['shake_128'] = _sha3.shake_128
cache['shake_256'] = _sha3.shake_256
except ImportError:
pass # no extension module, this hash is unsupported.