Patent · US Active

Apparatus and method for calculating an SHA-2 hash function in a general purpose processor

US9164725B2 · kind B2 · utility

1Cited by

1References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Maarten J. Boersma · Holzgerlingen, DE
Markus Kaltenbach · Holzgerlingen, DE
Jens Leenstra · Nagold, DE
Tim Niggemeier · Laatzen, DE
Philipp Oehler · Schrobenhausen, DE
Philipp Panitz · Eppelheim, DE

Key dates

Filing date	Jul 13, 2011
Grant date	Oct 20, 2015
Priority date	—
Expiry date	May 16, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/125
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Various systems, apparatuses, processes, and/or products may be used to calculate an SHA-2 hash function in a general-purpose processor. In some implementations, a system, apparatus, process, and/or product may include the ability to calculate at least one SHA-2 sigma function by using an execution unit adapted for performing a processor instruction, the execution unit including an integrated circuit primarily designed for calculating the SHA-2 sigma function(s), and calculating the SHA-2 hash function with general-purpose hardware processing components of the processor based on the sigma function(s). In certain implementations, the calculation of the SHA-2 sigma function(s) can be performed by the integrated circuit within a single instruction, allowing for a faster calculation of the SHA-2 hash function.

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