Public Key Ciphers
Public Key Ciphers |
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The concept of public-key cryptography was introduced in 1976 by Whitfield Diffie and Martin Hellman [DH76] in order to solve the key management problem. In their concept, each person gets a pair of keys, one called the public key and the other called the private key. Each person's public key is published while the private key is kept secret. The need for the sender and receiver to share secret information is eliminated: all communications involve only public keys, and no private key is ever transmitted or shared.
Does this solve the problem? If you say you are Ted and this is your public key, check the signature on this deed I'm presenting you, do I trust this? (PKI, CAs)
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