Ciphers# class sage.crypto.cipher.Cipher(parent, key)# Bases: Element Cipher class codomain()# domain()# key()# class sage.crypto.cipher.PublicKeyCipher(parent, key, public=True)# Bases: Cipher Public key cipher class class sage.crypto.cipher.SymmetricKeyCipher(parent, key)# Bases: Cipher Symmetric key cipher class