Enigma cryptographic machine design
Secret ( English shadow ) - a set of data necessary to decrypt a message.
In primitive ciphers, the secret is the permutation algorithm . In general, the secret is a combination of encryption algorithm and keys. For example, in an Enigma cryptographic machine, the secret was:
- Machine design itself
- Encryption Options - A Set of Disks and Initial Settings
- Key
In modern encryption algorithms, the key is the only secret. When encrypting with an asymmetric key, the secret is the private key .