A device and a method for performing a cryptographic function

摘要

The present invention provides a method and an apparatus for encrypting and decrypting digital information while imparting a high level of security on the encrypted digital information. A mixed-mode digital-analogue encryption and decryption 5 technique is proposed, which minimises the probability of an unintended recipient of the thus encrypted information being able to decrypt the information using known reverse engineering techniques. x K Fig. 1 -PREYU DA1 X Fig. 2