A shrinking generator for cryptosystems.

摘要

A method and apparatus for encrypting a message stream of data where a first and second stream of random data are generated with the two streams being independent of each other. A third stream is then generated from the first stream by selecting bits from the first stream only if the corresponding bit in the second stream is in a selected state. Finally, the third stream is then exclusive-OR-ed with the message stream to be encrypted to produce an encrypted stream of data.