Patent · US Active

Method and system for encryption of a datastream

US8718278B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Felix C. Beck · Mainz, DE
Rolf Schaefer · Mainz, DE

Key dates

Filing date	Dec 12, 2011
Grant date	May 6, 2014
Priority date	—
Expiry date	Jan 16, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0662
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for an encryption of a data stream is provided. The method includes: providing the data stream, providing at least two first random number generators having a first cryptographic strength, wherein each of the at least two first random number generators is switchable between states including a clocked state and a working state, and providing a second random number generator having a second cryptographic strength, wherein the second cryptographic strength is higher than the cryptographic strength. The method further includes switching the states of the at least two first random number generators using an output of the second random number generator and using an XOR-function for combining the data stream with an output of one of the at least two first random number generators, which is in the working state, such that a ciphered data stream is created.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.