def verify(self, msg, crypto, key):
"""
Verifies a message using ECDSA cryptographic signature and key.
``crypto`` is the cryptographic signature
``key`` is the verifying key. Can be a real key object or a string.
"""
import ecdsa
curve = getattr(ecdsa, self.bits_to_curve[self.bits])
vk = key
if not isinstance(vk, ecdsa.VerifyingKey):
vk = ecdsa.VerifyingKey.from_string(key, curve=curve)
try:
vk.verify(crypto, msg, hashfunc=self.hasher)
except ecdsa.BadSignatureError:
raise SignatureError("Could not validate signature")
except AssertionError:
raise SignatureError("Could not validate signature")
return True
def verify(self, msg, crypto, key):
"""
Verifies a message using RSA cryptographic signature and key.
``crypto`` is the cryptographic signature
``key`` is the verifying key. Can be a real key object or a string.
"""
import Crypto.PublicKey.RSA as RSA
self.hashm.update(msg)
private_key = key
if not isinstance(key, RSA._RSAobj):
private_key = RSA.importKey(key)
if not self.padder.new(private_key).verify(self.hashm,
crypto): #:pycrypto 2.5
raise SignatureError("Could not validate signature")
return True
def verify(self, msg, crypto, key):
if not self.sign(msg, key) == crypto:
raise SignatureError("Could not validate signature")
return True