Public Key Cryptography 1976-1977創始 (差別化: 既存暗号方式DES/AES史と異なり公開鍵暗号創始者軸)。Whitfield Diffie 1944生+Martin Hellman 1945生 Stanford Univ「New Directions in Cryptography」1976/11 IEEE Transactions Information Theory発表 (Diffie-Hellman Key Exchange Protocol DH・Discrete Logarithm Problem・公開鍵暗号革命)・Ralph Merkle 1974 Project Proposal提案 (Berkeley Submarine Internet Communication・Merkle's Puzzles先行)→Diffie-Hellman-Merkle Algorithm改名議論・Ron Rivest 1947生+Adi Shamir 1952生+Leonard Adleman 1945生 MIT「A Method for Obtaining Digital Signatures and Public-Key Cryptosystems」1977/8 (RSA・素因数分解Hardness Problem基づくEncrypt+Decrypt+Signature)・Communications of the ACM 1978/2公開・1982 RSA Security設立・1983 RSA特許US Patent 4,405,829 (米国のみ・2000年失効)・Phil Zimmermann PGP 1991 (RSA採用)・Diffie+Hellman 2015 Turing Award・Rivest+Shamir+Adleman 2002 Turing Award・GCHQ James Ellis+Clifford Cocks+Malcolm Williamson 1969-1973 Independent invention (機密分類解除1997)・¥0 公的功績、2026年TLS 1.3+SSH+SignalProtocol前提技術。