Method and device for protecting information against unauthorised use

摘要

Described are method and device for protecting information against unauthorized use. Information obtained by the user is encrypted using an asymmetrical cryptography method with a user's key which is received by a distributor of information. The information is decoded before the use thereof with the aid of a private key of the user. Decryption may be carried out directly in a CPU of the user's computer user so that the decrypted information does not exist outside the processor.