def _verify_signature(content, signature, user=None, refresh=False):
signature = Signature.fromBase64(signature)
public_key = cache.get("starkbank-public-key")
if public_key is None or refresh:
pem = _get_public_key_pem(user)
public_key = PublicKey.fromPem(pem)
cache["starkbank-public-key"] = public_key
return Ecdsa.verify(message=content, signature=signature, publicKey=public_key)
def testDerConversion(self):
privateKey = PrivateKey()
message = "This is a text message"
signature1 = Ecdsa.sign(message, privateKey)
der = signature1.toDer()
signature2 = Signature.fromDer(fromLatin(der))
self.assertEqual(signature1.r, signature2.r)
self.assertEqual(signature1.s, signature2.s)
def testBase64Conversion(self):
privateKey = PrivateKey()
message = "This is a text message"
signature1 = Ecdsa.sign(message, privateKey)
base64 = signature1.toBase64()
signature2 = Signature.fromBase64(base64)
self.assertEqual(signature1.r, signature2.r)
self.assertEqual(signature1.s, signature2.s)
def testDerConversion(self):
privateKey = PrivateKey()
message = "This is a text message"
signature1 = Ecdsa.sign(message, privateKey)
der = signature1.toDer(withRecoveryId=True)
signature2 = Signature.fromDer(toBytes(der), recoveryByte=True)
self.assertEqual(signature1.r, signature2.r)
self.assertEqual(signature1.s, signature2.s)
self.assertEqual(signature1.recid, signature2.recid)
def testBase64Conversion(self):
privateKey = PrivateKey()
message = "This is a text message"
signature1 = Ecdsa.sign(message, privateKey)
base64 = signature1.toBase64(withRecoveryId=True)
signature2 = Signature.fromBase64(base64, recoveryByte=True)
self.assertEqual(signature1.r, signature2.r)
self.assertEqual(signature1.s, signature2.s)
self.assertEqual(signature1.recid, signature2.recid)
def verify(dictionary_msg, signature, sender_public_key):
vk, _ = ppk_get_back_object(public_key=sender_public_key)
if config.DIGITAL_SIGNATURE_ALGO == 'ECDSA':
h = str(dictionary_msg)
check = Ecdsa.verify(h, Signature.fromPem(signature), vk) # True
# log_info("[security.digital_signature.verify] ECDSA Verify result: {}".format(check))
return check
elif config.DIGITAL_SIGNATURE_ALGO == 'SCHNORR':
h = dict_to_hash(dictionary_msg)
check = schnorr_verify(h, vk, signature)
# log_info("[security.digital_signature.verify] Schnorr Verify result: {}".format(check))
return check
else:
log_error("[security.digital_signature.verify] Unknown DSA in config -- cannot verify signature!")
def testVerifySignature(self):
# openssl ec -in privateKey.pem -pubout -out publicKey.pem
publicKeyPem = File.read("./publicKey.pem")
# openssl dgst -sha256 -sign privateKey.pem -out signature.binary message.txt
signatureDer = File.read("./signatureDer.txt", "rb")
message = File.read("./message.txt")
publicKey = PublicKey.fromPem(publicKeyPem)
signature = Signature.fromDer(string=signatureDer)
self.assertTrue(Ecdsa.verify(message=message, signature=signature, publicKey=publicKey))
def verify_signature(self, payload, signature, timestamp, public_key=None):
"""
Verify signed event webhook requests.
:param payload: event payload in the request body
:type payload: string
:param signature: value obtained from the 'X-Twilio-Email-Event-Webhook-Signature' header
:type signature: string
:param timestamp: value obtained from the 'X-Twilio-Email-Event-Webhook-Timestamp' header
:type timestamp: string
:param public_key: elliptic curve public key
:type public_key: PublicKey
:return: true or false if signature is valid
"""
timestamped_payload = timestamp + payload
decoded_signature = Signature.fromBase64(signature)
key = public_key or self.public_key
return Ecdsa.verify(timestamped_payload, decoded_signature, key)
def verify_Signature(message, signature_input, publicKey_input):
publicKey_input = '-----BEGIN PUBLIC KEY-----\n' + publicKey_input + '\n-----END PUBLIC KEY-----\n'
signature = Signature.fromBase64(signature_input)
publicKey = PublicKey.fromPem(publicKey_input)
return (Ecdsa.verify(message, signature, publicKey))
def verify_Signature(message, sign64, str1):
signature = Signature.fromBase64(sign64)
publicKey = PublicKey.fromPem(str1)
return (Ecdsa.verify(message, signature, publicKey))
def verify_Signature(message, sign64, publicKey_input):
signature = Signature.fromBase64(sign64)
a = publicKey_input.split(".")
pt = Point(int(a[0]), int(a[1]), int(a[2]))
publicKey = PublicKey(point = pt, curve = secp256k1)
return (Ecdsa.verify(message, signature, publicKey))