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# coding: utf-8
# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
import base64
def pem_from_base64(base64_value, header_type):
# type: (str, str) -> str
pem = "-----BEGIN " + header_type + "-----\n"
while base64_value != "":
pem += base64_value[:64] + "\n"
base64_value = base64_value[64:]
pem += "-----END " + header_type + "-----\n"
return pem
def base64url_encode(unencoded):
# type: (bytes)->str
base64val = base64.urlsafe_b64encode(unencoded)
strip_trailing = base64val.split(b"=")[0] # pick the string before the trailing =
return strip_trailing.decode("utf-8")
def base64url_decode(encoded):
# type: (str)->bytes
padding_added = encoded + "=" * ((len(encoded) * -1) % 4)
return base64.urlsafe_b64decode(padding_added.encode("utf-8"))
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