GCHQ pioneers on birth of public key crypto
In public key cryptography, data is encrypted using a widely distributed public key, and can be decrypted using a private key. GCHQ mathematician Clifford Cocks, who invented the practical method of public key cryptography in 1973, and Ralph Benjamin, who was GCHQ's chief scientist from 1971 to 1982, told ZDNet UK about their pioneering work.
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