195439 ⎘
Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member
Sub-classes:SIMILARITY CALCULATION SYSTEM, SIMILARITY CALCULATION APPARATUS, SIMILARITY CALCULATION METHOD, AND SIMILARITY CALCULATION PROGRAM
#2ENCRYPTING DATA
#3Logic encryption using on-chip memory cells
#4Hardened white box implementation 2
#5Method for testing and hardening software applications
#6Hardened white box implementation 1
#7Hardened white box implementation
#8Data Encryption and Input System