Patent #5,963,646Secure Deterministic Encryption Key Generator System and MethodABSTRACTAn encryption key generator is disclosed which is highly resistant to cryptographic analysis or brute force attacks, and which accommodates the destruction of an encryption key after each use by providing for the recreation of the key without use of key directories or other encryption key storage processes. A constant value and a secret E-Key Seed are applied as inputs to a bit shuffling algorithm to provide a first many-to-few bit mapping and produce a first pseudo-random number. The first pseudo-random number in turn is applied as an input to a secure one-way hash algorithm to provide a second many-to-few bit mapping and produce a second pseudo-random number or message digest that may be truncated to a desired bit length to serve as a non-predictable but deterministic encryption key. Same constant value and E-Key Seed inputs to the key generator will provide the same message digest and hence the same key.
© 2007, PACid, LLC.
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A Vigenère Square with custom alphabet.
Image courtesy of Peter Drubetskoy peter@skyredoubt.com. See more of Peter's work at www.skyredoubt.com The Vigenère SquareBy extending the Vigenère Square with a new custom alphabet, users continue operating with a tried and true method with increased security, without the cost and risk of changeover. PACid extends today's encryption techniques in the same way, reducing risks while saving costs. |