Group signature generation system using multiple primes

Details Group signature generation system using multiple primes Group signature generation system using multiple primes

2006-08-15

2006-08-15

Peeso, Thomas R. (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S186000

Reexamination Certificate

active

07093133

ABSTRACT:
A method is provided for generating a group digital signature wherein each of a group of individuals may sign a message M to create a group digital signature S, wherein M corresponds to a number representative of a message, 0≦M≦n−1, n is a composite number formed from the product of a number k of distinct random prime factors p1·p2· . . . ·pk, k is an integer greater than 2, and S≡Md(mod n). The method may include: performing a first partial digital signature subtask on a message M using a first individual private key to produce a first partial digital signature S1; performing at least a second partial digital signature subtask on the message M using a second individual private key to produce a second partial digital signature S2; and combining the partial digital signature results to produce a group digital signature S.

REFERENCES:
patent: 5224163 (1993-06-01), Gasser et al.
patent: 5276737 (1994-01-01), Micali
patent: 5422953 (1995-06-01), Fischer
patent: 5481613 (1996-01-01), Ford et al.
patent: 6209091 (2001-03-01), Sudia et al.

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