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# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D162643
42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import sys
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from pyasn1.codec.der import decoder
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from pyasn1.type import univ
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from pyasn1_modules import pem
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def public_key_to_string(file, name):
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out = "static const unsigned char " + name + "[65] = { "
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with open(file) as f:
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substrate = pem.readPemFromFile(
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f, "-----BEGIN PUBLIC KEY-----", "-----END PUBLIC KEY-----"
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)
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key = decoder.decode(substrate)
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ident = key[0][0]
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assert ident[0] == univ.ObjectIdentifier(
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"1.2.840.10045.2.1"
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), "should be an ECPublicKey"
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assert ident[1] == univ.ObjectIdentifier(
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"1.2.840.10045.3.1.7"
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), "should be a EcdsaP256 key"
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bits = key[0][1]
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assert isinstance(bits, univ.BitString), "Should be a bit string"
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assert len(bits) == 520, "Should be 520 bits (65 bytes)"
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for byte in bits.asOctets():
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out += hex(byte) + ", "
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out += "};"
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return out
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def generate(output, test_key, prod_key):
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output.write(public_key_to_string(test_key, "kTestKey"))
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output.write("\n\n")
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output.write(public_key_to_string(prod_key, "kProdKey"))
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if __name__ == "__main__":
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generate(sys.stdout, *sys.argv[1:])
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