def verify_sign(public_key, signature, message):
"""
verify signature
Args:
public_key:public key object
signature:signature string
raw_data:data string
Returns:
True: is valid signature;False: is invalid signature
"""
if isinstance(message, str):
message = message.encode(encoding="utf-8")
if isinstance(signature, str):
signature = Encoder.hex_to_bytes(signature)
try:
public_key.verify(signature, message, ec.ECDSA(hashes.SHA256()))
except Exception:
logger.exception("verify signature error")
return False
else:
return True
def get_public_key(public_key_string):
pub_key_bytes = Encoder.hex_to_bytes(public_key_string)
return ECCipher.create_public_key(pub_key_bytes)
def is_valid_signature(public_key_string, raw_data, signature):
public_key_bytes = Encoder.hex_to_bytes(public_key_string)
public_key = ECCipher.create_public_key(public_key_bytes)
logger.debug("is_valid_verify_code public_key:" + public_key_string +
",raw_data:" + raw_data + ",signature:" + signature)
return verify_signature(public_key, signature, raw_data)