Patent · US Active

Method and apparatus for improving digital signatures

US9300472B2 · kind B2 · utility

1Cited by

4References

16Claims

0Family size

Assignee

NOKIA TECHNOLOGIES OY · FI

Inventors

Sampo Sovio · Helsinki, FI
Martti Takala · Lieksa, FI
Rauno Tamminen · Tampere, FI
Suvi Lehtinen · Tampere, FI

Key dates

Filing date	Sep 30, 2011
Grant date	Mar 29, 2016
Priority date	—
Expiry date	Mar 27, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/805
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Systems and methods are provided for enchancing pseudo random number generation to thwart various security attacks to a system that relies on digital signature security measures. For example, a random number may be bound to a message that is to be signed using a digital signature. Alternatively, a random number may be bound to a secret seed value, which may be updated subsequent to each signing. Alternatively still, a random number may be bound to both the message to be signed using a digital signature and a secret seed value.

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