1 files changed, 42 insertions, 0 deletions
diff --git a/dom/origin-trials/gen-keys.py b/dom/origin-trials/gen-keys.py
new file mode 100644
index 0000000000..6d00d695cf
--- /dev/null
+++ b/dom/origin-trials/gen-keys.py
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import sys
+
+from pyasn1.codec.der import decoder
+from pyasn1.type import univ
+from pyasn1_modules import pem
+
+
+def public_key_to_string(file, name):
+    out = "static const unsigned char " + name + "[65] = { "
+    with open(file) as f:
+        substrate = pem.readPemFromFile(
+            f, "-----BEGIN PUBLIC KEY-----", "-----END PUBLIC KEY-----"
+        )
+        key = decoder.decode(substrate)
+        ident = key[0][0]
+        assert ident[0] == univ.ObjectIdentifier(
+            "1.2.840.10045.2.1"
+        ), "should be an ECPublicKey"
+        assert ident[1] == univ.ObjectIdentifier(
+            "1.2.840.10045.3.1.7"
+        ), "should be a EcdsaP256 key"
+        bits = key[0][1]
+        assert isinstance(bits, univ.BitString), "Should be a bit string"
+        assert len(bits) == 520, "Should be 520 bits (65 bytes)"
+        for byte in bits.asOctets():
+            out += hex(byte) + ", "
+    out += "};"
+    return out
+
+
+def generate(output, test_key, prod_key):
+    output.write(public_key_to_string(test_key, "kTestKey"))
+    output.write("\n\n")
+    output.write(public_key_to_string(prod_key, "kProdKey"))
+
+
+if __name__ == "__main__":
+    generate(sys.stdout, *sys.argv[1:])