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# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0.
import _awscrt
class Hash:
def __init__(self, native_handle):
"""
don't call me, I'm private
"""
self._hash = native_handle
@staticmethod
def sha1_new():
"""
Creates a new instance of Hash, using the sha1 algorithm
"""
return Hash(native_handle=_awscrt.sha1_new())
@staticmethod
def sha256_new():
"""
Creates a new instance of Hash, using the sha256 algorithm
"""
return Hash(native_handle=_awscrt.sha256_new())
@staticmethod
def md5_new():
"""
Creates a new instance of Hash, using the md5 algorithm.
"""
return Hash(native_handle=_awscrt.md5_new())
def update(self, to_hash):
_awscrt.hash_update(self._hash, to_hash)
def digest(self, truncate_to=0):
return _awscrt.hash_digest(self._hash, truncate_to)
class HMAC:
def __init__(self, native_handle):
"""
don't call me, I'm private
"""
self._hmac = native_handle
@staticmethod
def sha256_hmac_new(secret_key):
"""
Creates a new instance of HMAC, using SHA256 HMAC as the algorithm and secret_key as the secret
"""
return HMAC(native_handle=_awscrt.sha256_hmac_new(secret_key))
def update(self, to_hmac):
_awscrt.hmac_update(self._hmac, to_hmac)
def digest(self, truncate_to=0):
return _awscrt.hmac_digest(self._hmac, truncate_to)
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