Recently the Association for Computing Machinery awarded Whitfield Diffie and Martin Hellman of the most prestigious awards in the field of computer - the Turing Award. The reason for this was developed by them in the late '70s cryptographic protocol, which was named in honor of their authors - the Diffie-Hellman protocol. Today, it is used in a variety of areas, including e-commerce.
Diffie-Hellman protocol involves the use of two keys. The first public key is used to encrypt data and verify the electronic signature. The second private key is used to generate a signature and data decryption.
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