Diffie Hellman Key Exchange
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Diffie-Hellman key exchange - Diffie-Hellman key exchange is a cryptographic protocol which allows two parties that have no prior knowledge of each other to jointly establish a shared secret key over an insecure communications channel. This key can then be used to encrypt subsequent communications using a symmetric key cipher.
Diffie-Hellman problem - The Diffie-Hellman problem (DHP) is an open problem in number theory developed by Whitfield Diffie and Martin Hellman with implications for modern cryptography. If proven, it would prove the level of security for certain types of key exchange, notably Diffie-Hellman key exchange and ElGamal encryption; if disproven, these forms of key exchange would become insecure as one could break.
Elliptic Curve Diffie-Hellman - Elliptic Curve Diffie-Hellman (ECDH) is a key agreement protocol that allows two parties to estabilish a shared secret key over an insecure channel. This key can then be used to encrypt subsequent communications using a symmetric key cipher.
Oakley protocol - OAKLEY was proposed as a protocol "by which two authenticated parties can agree on secure and secret keying material. The basic mechanism is the Diffie-Hellman key exchange algorithm.
diffiehellmankeyexchange
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