cosimo · May 29, 2024 12:58 · May 29, 2024
diff --git a/generate-google-pay-keys.py b/generate-google-pay-keys.py
@@ -0,0 +1,44 @@
+"""
+Generate private/public keys for use in Google Pay Business Console
+https://pay.google.com/business/console/
+"""
+
+import base64
+from cryptography.hazmat.primitives.asymmetric import ec
+from cryptography.hazmat.primitives import serialization
+
+# Generate the ECDSA private key
+private_key = ec.generate_private_key(ec.SECP256R1())
+
+# Get the public key
+public_key = private_key.public_key()
+
+# Serialize the public key in uncompressed point format
+uncompressed_public_key = public_key.public_bytes(
+    encoding=serialization.Encoding.X962,
+    format=serialization.PublicFormat.UncompressedPoint
+)
+
+# Print the length of the public key to ensure it is 88 bytes
+print(f"Uncompressed Public Key Length: {len(uncompressed_public_key)} bytes")
+print(f"Uncompressed Public Key: {uncompressed_public_key.hex()}")
+
+# Convert the uncompressed public key to base64 format
+base64_public_key = base64.b64encode(uncompressed_public_key).decode("utf-8")
+print(f"Base64 Public Key: {base64_public_key}")
+
+with open("base64_public_key.txt", "wb") as key_file:
+    key_file.write(base64_public_key.encode("utf-8"))
+    print("Public key saved in base64 format to base64_public_key.txt")
+
+# Serialize the private key to PEM format and save it to a file
+pem_private_key = private_key.private_bytes(
+    encoding=serialization.Encoding.PEM,
+    format=serialization.PrivateFormat.PKCS8,
+    encryption_algorithm=serialization.NoEncryption()  # No encryption for simplicity
+)
+
+# Write the PEM private key to a file
+with open("ecdsa_private_key.pem", "wb") as key_file:
+    key_file.write(pem_private_key)
+    print("Private key saved to ecdsa_private_key.pem")