def verify(self, message: bytes, signature: bytes, key: rsa.RSAPublicKey): try: key.verify(signature, message, padding.PSS(mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH), hashes.SHA256()) return True except InvalidSignature: return False
def verify(self, key: rsa.RSAPublicKey, msg: bytes, sig: bytes) -> bool: """Verify the ``msg` and ``sig`` using ``key``.""" try: key.verify(sig, msg, self.padding, self.hash) except cryptography.exceptions.InvalidSignature as error: logger.debug(error, exc_info=True) return False else: return True
def verify(sig, data, pkey: rsa.RSAPublicKey): """Verify that the signature `sig` is valid for data `data` and public key `pkey`. Returns True if the signature is valid, False otherwise.""" try: pkey.verify(sig, data, padding.PKCS1v15(), utils.Prehashed(hashes.MD5())) except InvalidSignature: return False return True
def check_certificate_against_public_key( cert: Certificate, public_key: RSAPublicKey, ) -> None: # Check if the signature of the certificate matches the public key public_key.verify( cert.signature, cert.tbs_certificate_bytes, PKCS1v15(), SHA256(), )
def _verify_bytes(public_key: RSAPublicKey, signature: bytes, data: bytes) -> None: """ Raises ------- cryptography.exceptions.InvalidSignature """ public_key.verify( signature, data, padding.PSS(mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH), hashes.SHA256())
def verify(self, msg: str, signed: str, public_key: RSAPublicKey) -> bool: try: public_key.verify(binascii.a2b_base64(signed), msg.encode("ascii"), padding=padding.PSS( mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH), algorithm=hashes.SHA256()) except InvalidSignature: return False return True
def assertValidSignature(self, public_key: rsa.RSAPublicKey, signed_base64: str, message: bytes): from cryptography.hazmat.primitives import hashes from cryptography.hazmat.primitives.asymmetric import padding, utils import base64 import hashlib digest = hashlib.sha256(message).digest() # si la firma es invalida, este metodo arroja una excepcion public_key.verify(base64.b64decode(signed_base64), digest, padding.PKCS1v15(), utils.Prehashed(hashes.SHA256())) self.assertTrue(True)
def verify_signature(public_key: RSAPublicKey, signature: bytes, data: bytes) -> None: """Verfies the supplied signature. Args: public_key: RSA public key with which the verification is done. signature: The signature to verify. data: The message that was signed. Raises: InvalidSignature if signature is not valid. """ public_key.verify( signature, data, padding.PKCS1v15(), hashes.SHA256(), )
def verify_message(self, msg: bytes, signature: bytes, public_key: RSAPublicKey) -> bool: """ Checks message signature :param msg: message :param signature: message's signature :param public_key: sender's public key :return: true if signature is correct, false otherwise """ try: public_key.verify(signature=signature, data=msg, padding=padding.PSS( mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH), algorithm=hashes.SHA256()) except InvalidSignature: return False return True
def verify(cert: "X509Certificate", public_key: rsa.RSAPublicKey) -> bool: """ return weither the certificate is valid or not """ try: public_key.verify( cert._certificate.signature, cert._certificate.tbs_certificate_bytes, padding.PKCS1v15(), cert._certificate.signature_hash_algorithm, ) except InvalidSignature as e: print("InvalidSignature") return False today = datetime.datetime.today() if (cert._certificate.not_valid_after < today or cert._certificate.not_valid_before > today): print("Certificate out of date") return False return True
def verify(public_key: rsa.RSAPublicKey, msg: bytes, signature: bytes) -> bool: """ Verifies the authenticity of a signed transmission. :param public_key: The public key to verify the signature against. :type public_key: :class:`rsa.RSAPublicKey` :param msg: The signed message. :type msg: `bytes` :param signature: The signature. :type signature: `bytes` :returns: True if the signature was verified, False otherwise. :rtype: `bool` """ try: public_key.verify(signature, msg, padding.PSS( mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH), hashes.SHA256()) return True except InvalidSignature: return False
def get_rsa_verifier(pub_key: rsa.RSAPublicKey): if sigAlgo.signature_algo == 'rsassa_pss': sig_algo_params = sigAlgo['parameters'] assert 'mask_gen_algorithm' in sig_algo_params assert 'salt_length' in sig_algo_params mgf = sig_algo_params['mask_gen_algorithm']['algorithm'].native if 'mgf1' != mgf: raise ValueError( "Invalid mask generation algorithm: {}".format(mgf)) mgf1_hash_algo = sig_algo_params['mask_gen_algorithm'][ 'parameters']['algorithm'].native mgf1_hash_algo = algo_utils.get_hash_algo_by_name( mgf1_hash_algo) return Verifier(lambda: pub_key.verify( signature, message, padding.PSS(mgf=padding.MGF1(mgf1_hash_algo), salt_length=sig_algo_params['salt_length']. native), hash_algo)) else: return Verifier(lambda: pub_key.verify( signature, message, padding.PKCS1v15(), hash_algo))
def verify(self, plaintext: bytes, signature, otherkey: rsa.RSAPublicKey): otherkey.verify( signature, plaintext, apadding.PSS(mgf=apadding.MGF1(hashes.SHA256()), salt_length=apadding.PSS.MAX_LENGTH), hashes.SHA256())