45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
import hashlib
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import base64
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from collections import OrderedDict
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from django.utils.crypto import constant_time_compare
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from django.utils.encoding import force_bytes
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from django.utils.translation import gettext_noop as _
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from django.contrib.auth.hashers import mask_hash, BasePasswordHasher
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class SHA512PasswordHasher(BasePasswordHasher):
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"""
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The SHA512 password hashing algorithm
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It is used to migrate passwords from old Symfony2 photos server.
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https://github.com/symfony/symfony/blob/2.8/src/Symfony/Component/Security/Core/Encoder/MessageDigestPasswordEncoder.php
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"""
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algorithm = "sha512"
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def encode(self, password, salt):
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assert password is not None
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assert salt and '$' not in salt
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hash = hashlib.sha512(force_bytes(password + "{" + salt + "}"))
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hash = base64.b64encode(hash)
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encoded = "%s$%s$%s" % (self.algorithm, salt, hash)
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encoded = encoded[:128]
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return encoded
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def verify(self, password, encoded):
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algorithm, salt, hash = encoded.split('$', 2)
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assert algorithm == self.algorithm
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encoded_2 = self.encode(password, salt)
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return constant_time_compare(encoded, encoded_2)
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def safe_summary(self, encoded):
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algorithm, salt, hash = encoded.split('$', 2)
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assert algorithm == self.algorithm
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return OrderedDict([
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(_('algorithm'), algorithm),
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(_('salt'), mask_hash(salt, show=2)),
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(_('hash'), mask_hash(hash)),
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])
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def harden_runtime(self, password, encoded):
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pass
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