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# Copyright (C) 2011-2014 by Barry A. Warsaw
#
# This file is part of flufl.password
#
# flufl.password is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, version 3 of the License.
#
# flufl.password is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with flufl.password. If not, see <http://www.gnu.org/licenses/>.
"""Verification."""
from __future__ import absolute_import, print_function, unicode_literals
__metaclass__ = type
__all__ = [
'verify',
]
from flufl.password._registry import lookup
from flufl.password._utils import split
def verify(hashed, cleartext):
"""Verify whether the clear text response matches the hashed challenge.
:param hashed: The hashed password.
:type hashed: bytes
:param cleartext: The clear text password to match against.
:type cleartext: bytes or utf-8 encoded string.
:return: Flag indicating whether the password matched.
:rtype: bool
:raises BadPasswordSchemeError: when the indicated scheme cannot be found.
:raises BadPasswordFormatError: when the hashed parameter is not properly
formatted as ``{SCHEME}password``.
"""
if not isinstance(cleartext, bytes):
cleartext = cleartext.encode('utf-8')
scheme, secret = split(hashed)
scheme_class = lookup(scheme.upper())
return scheme_class.check_response(secret, cleartext, scheme)
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