Simple Key-Management for Internet Protocol
Encyclopedia
Simple Key-Management for Internet Protocol or SKIP was a protocol developed circa 1995 by the IETF Security Working Group for the sharing of encryption keys. SKIP and Photuris
Photuris (protocol)
In computer networking, Photuris is a session key management protocol defined in RFC 2522.-External links:* RFC 2522*...

 were evaluated as key exchange mechanisms for IPsec
IPsec
Internet Protocol Security is a protocol suite for securing Internet Protocol communications by authenticating and encrypting each IP packet of a communication session...

 before the adoption of IKE
Internet key exchange
Internet Key Exchange is the protocol used to set up a security association in the IPsec protocol suite. IKE builds upon the Oakley protocol and ISAKMP...

in 1998.

Skip is hybrid Key distribution protocol
Simple Key Management for Internet Protocols (SKIP) is similar to SSL, except that it establishes a long-term key once, and then requires no prior communication in order to establish or exchange keys on a session-by-session basis. Therefore, no connection setup overhead exists and new keys values are not continually generated.
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