Key Exchange

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Full Title or Meme

Key Exchange protocols typical precede secure communications.


  • In the 1970's and onward, key exchange was typically a mechanical process were encryption or signing keys were distributed by physically embedding the key in a piece of hardware that was then put into tamper-evident packaging an physically moved to both ends of the secure communications channel.[1]
  • With the advent of Public Key Cryptography, various Key Exchange protocols have been developed that use some sort of Public Key Infrastructure to initiate a secure communication channel.
  • With the advent of Public Key Infrastructure provably security Key Exchange is possible and in 2021 had been demonstrated.



  1. Thomas C. Jones

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