high quality public key algorithms among widely used asymmetric key algorithms include cramer shoup cryptosystem elgamal encryption various elliptic curve techniques document published government communications headquarters gchq british intelligence organization revealed cryptographers gchq anticipated several academic developments ref name nytimes ref reportedly around james h ellis conceived principles asymmetric key cryptography clifford cocks invented solution similar design rationale rsa ref name nytimes ref name mjtci ref malcolm j williamson claimed developed diffie hellman key exchange ref name singh ref
Formal science Computer science Computer security Cryptography