Efficient block cipher method

摘要

The present invention provides an encryption or cipher method that uses the same pseudorandom function twice rather than different pseudorandom functions. Additionally, the present invention uses hashing functions that are highly efficient. The hashing functions of the present invention are square hashing functions that square a sum of a key and a data string rather than using a multiplication. As a result the hashing operation only requires w<2> + w/2 operations rather than the w<2> operations required by the inefficient hashing functions used in the prior art.. Additionally, the present invention replaces the exclusive ORed operations of the prior art with modular "n" summing operations.