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Diffie–Hellman key exchange
Diffie–Hellman key exchange (DH)[nb 1] is a method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as originally conceptualized by Ralph Merkle and named after Whitfield Diffie and Martin Hellman.[1][2] DH is one of the earliest practical examples of public key exchange implemented within the field of cryptography.
Traditionally, secure encrypted communication between two parties required that they first exchange keys by some secure physical channel, such as paper key lists transported by a trusted courier. The Diffie–Hellman key exchange method allows two parties that have no prior knowledge of each other to jointly establish a shared secret key over an insecure channel. This key can then be used to encrypt subsequent communications using a symmetric key cipher.
Diffie–Hellman is used to secure a variety of Internet services. However, research published in October 2015 suggests that the parameters in use for many DH Internet applications at that time are not strong enough to prevent compromise by very well-funded attackers, such as the security services of large governments.[3]
The scheme was first published by Whitfield Diffie and Martin Hellman in 1976,[2] but in 1997 it was revealed that James H. Ellis,[4] Clifford Cocks and Malcolm J. Williamson of GCHQ, the British signals intelligence agency, had previously, in 1969,[5] shown how public-key cryptography could be achieved.[6]
Although Diffie–Hellman key agreement itself is a non-authenticated key-agreement protocol, it provides the basis for a variety of authenticated protocols, and is used to provide forward secrecy in Transport Layer Security's ephemeral modes (referred to as EDH or DHE depending on the cipher suite).
The method was followed shortly afterwards by RSA, an implementation of public-key cryptography using asymmetric algorithms.
U.S. Patent 4,200,770 from 1977, is now expired and describes the now-public domain algorithm. It credits Hellman, Diffie, and Merkle as inventors.
Grabe diba ?
Anung masasabi niyo ? madali kaya ang pattern ng Exchanging Method Between SSH and your Device ?
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This article has multiple issues. Do not Expect Correct Terms
Diffie–Hellman key exchange (DH)[nb 1] is a method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as originally conceptualized by Ralph Merkle and named after Whitfield Diffie and Martin Hellman.[1][2] DH is one of the earliest practical examples of public key exchange implemented within the field of cryptography.
Traditionally, secure encrypted communication between two parties required that they first exchange keys by some secure physical channel, such as paper key lists transported by a trusted courier. The Diffie–Hellman key exchange method allows two parties that have no prior knowledge of each other to jointly establish a shared secret key over an insecure channel. This key can then be used to encrypt subsequent communications using a symmetric key cipher.
Diffie–Hellman is used to secure a variety of Internet services. However, research published in October 2015 suggests that the parameters in use for many DH Internet applications at that time are not strong enough to prevent compromise by very well-funded attackers, such as the security services of large governments.[3]
The scheme was first published by Whitfield Diffie and Martin Hellman in 1976,[2] but in 1997 it was revealed that James H. Ellis,[4] Clifford Cocks and Malcolm J. Williamson of GCHQ, the British signals intelligence agency, had previously, in 1969,[5] shown how public-key cryptography could be achieved.[6]
Although Diffie–Hellman key agreement itself is a non-authenticated key-agreement protocol, it provides the basis for a variety of authenticated protocols, and is used to provide forward secrecy in Transport Layer Security's ephemeral modes (referred to as EDH or DHE depending on the cipher suite).
The method was followed shortly afterwards by RSA, an implementation of public-key cryptography using asymmetric algorithms.
U.S. Patent 4,200,770 from 1977, is now expired and describes the now-public domain algorithm. It credits Hellman, Diffie, and Merkle as inventors.
Grabe diba ?
Anung masasabi niyo ? madali kaya ang pattern ng Exchanging Method Between SSH and your Device ?
Pls , tulungan natin si Wikipedia , kung may alam kayo tungkol dito , Pwede natin i submit ang idea mo ,
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