Skipjack algorithm

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Skipjack algorithm

A symmetric cryptographic algorithm developed by the U.S. National Security Agency (NSA). It is used in the Department of Commerce's Escrowed Encryption Standard (EES), which was embodied in the CLIPPER chip.

The key to the encrypted message is itself encrypted with a key combined from two escrowed keys. The encrypted key and an identifier of the chip that sent it is encrypted again with a "family key." In this way, a law enforcement agency can use the family key to decrypt the outer layer and glean the chip ID, which is used to obtain the two escrowed keys that are combined to decrypt the key that decrypts the message. Skipjack uses an 80-bit key to encrypt 64-bit blocks, but algorithm details are classified. See CLIPPER chip.

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No references found			The Fortezza Card (SEE BOX), for example, uses the Skipjack algorithm, which has eighty-bit keys. Decoding encryption policy by Denning, Dorothy E.; Baugh, William E., Jr. / Security Management Starting in late June, each of the five experts independently tested the SKIPJACK algorithm in a variety of ways, looking for potential flaws in the scheme. High marks for encryption algorithm by Science News The Fortezza Card (see box), for example, uses the Skipjack algorithm, which has eighty-bit keys. Decoding encryption policy by Denning, Dorothy E.; Baugh, William E., Jr. / Security Management			skintillion skintle skintled brickwork skintled joint skiograph skiou Skip skip bombing skip cast skip chain skip distance skip effect skip fading skip flag skip hoist skip keying skip logging skip mark skip shaft skip trajectory skip vehicle skip zone skip-dent skip-searched chain skipjack Skipjack algorithm Skipjack Races and Land Festival skipper skipping skipping-rope Skipton skirl Skirmish Line skiron Skiros Skíros skirt skirt roof skirt-roof skirting skirting block skirting board skirting plate Skis and Snowshoes skit Skitalets, Stepan Skitalets, Stepan Gavrilovich skittle skittles Skive skiver			skip through skip through skip town Skip tracing skip trajectory skip vehicle Skip zone Skip zone skip zones skip zones skip-bomb Skip-Day Skip-day settlement Skip-Day Settlements skip-dent Skip-Payment Clause Skip-Payment Clauses Skip-payment privilege Skip-Payment Privileges Skip-rope Skip-rope skip-searched chain skip-tooth saw Skipetar Skipetar skipjack skipjack Skipjack (cipher) Skipjack (disambiguation) Skipjack (disambiguation) Skipjack algorithm Skipjack Races and Land Festival skipjack tuna skipjack tuna skipjack tuna skipjacks skipjacks skiplane Skipole skippable skippable skippable skippable skipped skipped skipped skipped Skipped bail Skipped bail Skipped bail skipped it skipped it skipped it skipper skipper skipper skipper Skipper (butterfly) Skipper's, Inc. skippered skippered

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