def generateSignature(priv, message):
sha1 = hashlib.sha1()
sha1.update(message)
digest = sha1.digest()
block = b'\x00\x01' + (b'\xff' * (128 - len(digest) - 3)) + b'\x00' + digest
signature = challenge39.decryptbytes(priv, block)
return signature
def generateSignature(priv, message):
sha1 = hashlib.sha1()
sha1.update(message)
digest = sha1.digest()
block = b'\x00\x01' + (b'\xff' * (128 - len(digest) - 3)) + b'\x00' + digest
signature = challenge39.decryptbytes(priv, block)
return signature
def decryptOnce(ciphertext):
sha1 = hashlib.sha1()
sha1.update(ciphertext)
digest = sha1.digest()
if digest in decryptedHashes:
raise ValueError('Already decrypted')
decryptedHashes.add(digest)
return challenge39.decryptbytes(priv, ciphertext)
def decryptOnce(ciphertext):
sha1 = hashlib.sha1()
sha1.update(ciphertext)
digest = sha1.digest()
if digest in decryptedHashes:
raise ValueError('Already decrypted')
decryptedHashes.add(digest)
return challenge39.decryptbytes(priv, ciphertext)
def generateSignature(priv, message):
sha1 = hashlib.sha1() #求哈希值
sha1.update(message) #
digest = sha1.digest() #sha1的摘要
block = b'\x00\x01' + (
b'\xff' *
(128 - len(digest) - 3)) + b'\x00' + digest #填充的方式 128-（摘要长度-3）
signature = challenge39.decryptbytes(priv, block) #私钥解密 = 签名
return signature
