The Diffie-Hellman key agreement protocol (1976) was the first practical method for establishing a shared secret over an unsecured communication channel. The point is to agree on a key that …

Invited Paper Whitfield Diffie and Martin E. Hellman. Abstract Two kinds of contemporary developments in cryp- communications over an insecure channel order to use cryptog- …

It was published by Whitfield Diffie and Martin Hellman (inspired by the work of Ralph Merkle) in 1976. It has been the first example of public-key cryptography.

Consider the following problem: Two people (or computers) need to communicate securely. They have access to a symmetric cypher (the same key is used for encryption and decryption). …

Thus, the Diffie-Hellman Key Exchange is only as secure as the Discrete Log problem.

secrets over insecure channels. In cryptography, a key is a piece of secret information that is required to eith. r encrypt or decrypt a message. A cipher (or code) is symmetric if it uses the …

7.1 Diffie-Hellman Key Exchange ptography”by Diffie and Hellman [DH76]. In this work, Diffie and Hellman proposed the idea of pub ic-key encryption and digital signatures. Although they didn’t …