|
In public-key cryptography, the Station-to-Station (STS) protocol is a cryptographic key agreement scheme based on classic Diffie–Hellman that provides mutual key and entity authentication. In addition to protecting the established key from an attacker, the STS protocol uses no timestamps and provides perfect forward secrecy. It also entails two-way explicit key confirmation, making it an ''authenticated key agreement with key confirmation'' (AKC) protocol. STS was originally presented in 1987 in the context of ISDN security , finalized in 1989 and generally presented by Whitfield Diffie, Paul C. van Oorschot and Michael J. Wiener in 1992. The historical context for the protocol is also discussed in . ==Description== Deployment of STS can take different forms depending on communication requirements and the level of prior communication between parties. The data described in STS Setup may be shared prior to the beginning of a session to lessen the impact of the session's establishment. In the following explanations, exponentiation (Diffie–Hellman) operations provide the basis for key agreement, though this is not a requirement. The protocol may be modified, for example, to use elliptic curves instead. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Station-to-Station protocol」の詳細全文を読む スポンサード リンク
|