Similar to 乱数放送

The Pip

The Squeaky Wheel

UVB-76

Lincolnshire Poacher (numbers station)

Friend-to-friend

History of cryptography

Ciphertext

Key (cryptography)

Code talker

Elliptic-curve cryptography

Beale ciphers

Lamport signature

11 (number)

13 (number)

BackupHDDVD

BPCS-steganography

CAdES (computing)

CCM mode

Cramer–Shoup cryptosystem

CrypTool

CRYPTREC

Digital Signature Algorithm

ElGamal signature scheme

Feistel cipher

Fiat–Shamir heuristic

FIPS 140

Forward secrecy