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Merge pull request #310 from matrix-org/markjh/bcrypt_rounds

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Add config for how many bcrypt rounds to use for password hashes
This commit is contained in:
Mark Haines 2015-10-16 17:05:21 +01:00
commit b19b9535f6
2 changed files with 8 additions and 1 deletions
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6
synapse/config/registration.py
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@ -33,6 +33,7 @@ class RegistrationConfig(Config):
self.registration_shared_secret = config.get("registration_shared_secret")
self.macaroon_secret_key = config.get("macaroon_secret_key")
self.bcrypt_rounds = config.get("bcrypt_rounds", 12)
def default_config(self, **kwargs):
registration_shared_secret = random_string_with_symbols(50)
@ -48,6 +49,11 @@ class RegistrationConfig(Config):
registration_shared_secret: "%(registration_shared_secret)s"
macaroon_secret_key: "%(macaroon_secret_key)s"
# Set the number of bcrypt rounds used to generate password hash.
# Larger numbers increase the work factor needed to generate the hash.
# The default number of rounds is 12.
bcrypt_rounds: 12
""" % locals()
def add_arguments(self, parser):

3
synapse/handlers/auth.py
View file

@ -44,6 +44,7 @@ class AuthHandler(BaseHandler):
LoginType.EMAIL_IDENTITY: self._check_email_identity,
LoginType.DUMMY: self._check_dummy_auth,
}
self.bcrypt_rounds = hs.config.bcrypt_rounds
self.sessions = {}
@defer.inlineCallbacks
@ -432,7 +433,7 @@ class AuthHandler(BaseHandler):
Returns:
Hashed password (str).
"""
return bcrypt.hashpw(password, bcrypt.gensalt())
return bcrypt.hashpw(password, bcrypt.gensalt(self.bcrypt_rounds))
def validate_hash(self, password, stored_hash):
"""Validates that self.hash(password) == stored_hash.