Method, system, device for proving authenticity of an entity...

Details Method, system, device for proving authenticity of an entity... Method, system, device for proving authenticity of an entity...

2006-07-18

2006-07-18

Moise, Emmanuel L. (Department: 2137)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S030000

Reexamination Certificate

active

07080254

ABSTRACT:
The invention concerns a method whereby the proof is established by: m(≧1) pairs of private Qiand public Gi=gi2values; a public module n formed by the product of f(≧2) prime factors; an exponent v=2k(k>1), linked by the relationships of the type: Gi−Qiv≡1. mod n or Gi≡Qivmod n. Among the m numbers obtained by increasing Qior its inverse modulo n to modulo n square, k−1 times rank, at least one of them is different from ±gi. Among the 2mequations: x2≡gimod n, x2≡−gimod n, at least one of them has solutions in x in the ring of modulo n integers.

REFERENCES:
patent: 0 311 470 (1989-04-01), None
patent: 0 792 044 (1997-08-01), None
patent: WO 89/11706 (1989-11-01), None
patent: WO 96/33567 (1996-10-01), None
“Fast Decipherment Algorithm for RSA Public-Key Cryptosystem” by J. Quisquater et al.,Electronics Lettervol. 18, No. 21, XP 00057731, pp. 905-907, Oct. 14, 1982.

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