Biometric Encryption

Abstract

Related Concepts Modular Reduction; Montgomery's Algorithm; RSA Definition Barrett's algorithm is a process allowing the computation of the quantity u mod n without resorting to trial divi-sion. The method is efficient in settings where u changes frequently for a relatively invariant n (which is the case in cryptography). Let N denote the size of n in bits, u < u − n(q + ) = (u mod n) + n. Hence, one multiplication and (at most) two subtractions will suffice to determine u mod n from q ′ . Encryption; Symmetric Cryptosystem Definition Beaufort encryption is an encryption similar to the Vigenère encryption [], but with shifted reversed stan-dard alphabets. For encryption and decryption, one can use the Beaufort table below (Giovanni Sestri, ). a b c d e f g h i j k l m n o p q r s t u v w x y z