Public-key Cryptography - Examples

Examples

Examples of well-regarded asymmetric key techniques for varied purposes include:

  • Diffie–Hellman key exchange protocol
  • DSS (Digital Signature Standard), which incorporates the Digital Signature Algorithm
  • ElGamal
  • Various elliptic curve techniques
  • Various password-authenticated key agreement techniques
  • Paillier cryptosystem
  • RSA encryption algorithm (PKCS#1)
  • Cramer–Shoup cryptosystem

Examples of asymmetric key algorithms not widely adopted include:

  • NTRUEncrypt cryptosystem
  • McEliece cryptosystem

Examples of notable - yet insecure - asymmetric key algorithms include:

  • Merkle–Hellman knapsack cryptosystem

Examples of protocols using asymmetric key algorithms include:

  • GPG, an implementation of OpenPGP
  • Internet Key Exchange
  • PGP
  • ZRTP, a secure VoIP protocol
  • Secure Socket Layer, now codified as the IETF standard Transport Layer Security (TLS)
  • SILC
  • SSH
  • Bitcoin

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