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Diffstat (limited to 'google/auth/crypt/rsa.py')
-rw-r--r-- | google/auth/crypt/rsa.py | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/google/auth/crypt/rsa.py b/google/auth/crypt/rsa.py new file mode 100644 index 0000000..8b2d64c --- /dev/null +++ b/google/auth/crypt/rsa.py @@ -0,0 +1,30 @@ +# Copyright 2017 Google LLC +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +"""RSA cryptography signer and verifier.""" + + +try: + # Prefer cryptograph-based RSA implementation. + from google.auth.crypt import _cryptography_rsa + + RSASigner = _cryptography_rsa.RSASigner + RSAVerifier = _cryptography_rsa.RSAVerifier +except ImportError: # pragma: NO COVER + # Fallback to pure-python RSA implementation if cryptography is + # unavailable. + from google.auth.crypt import _python_rsa + + RSASigner = _python_rsa.RSASigner + RSAVerifier = _python_rsa.RSAVerifier |