The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 24, 2010

Filed:

Oct. 03, 2005
Applicants:

Nadarajah Asokan, Espoo, FI;

Kaisa Nyberg, Helsinki, FI;

Inventors:

Nadarajah Asokan, Espoo, FI;

Kaisa Nyberg, Helsinki, FI;

Assignee:

Nokia Corporation, Espoo, FI;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for authenticating a data agreement between first and second network entities can include the first network entity committing to the agreed data value, and transmitting the committed data value and a first random value to the second network entity. The first network entity can receive a second random value, and can then open the committed data value such that the second network entity can check the committed data value. If successful, the second network entity can calculate a third check string, and the first network entity can similarly calculate a fourth check string, based upon the data value and the first and second random values. The first network entity can calculate the fourth check string without the second network entity committing to the data value. The method can then include comparing the check strings such that the agreed data can be considered authenticated based upon the comparison.


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