def verify_signature(secret, salt, msg, signature):
plaintext, spaces_added = qcrypt._appendSpaces(msg)
aes = AES.new(saltedhash_bin(secret, salt), AES.MODE_CBC)
ciphertext = aes.encrypt(plaintext)
new_signature = hash_hex(ciphertext)
return bool(new_signature == signature)
def sign_msg(secret_hash_normalized, msg):
plaintext, spaces_added = qcrypt._appendSpaces(msg)
aes = AES.new(qcrypt.denormalize(secret_hash_normalized), AES.MODE_CBC)
ciphertext = aes.encrypt(plaintext)
signature = hash_hex(ciphertext)
return signature