Group signature apparatus and method

Details Group signature apparatus and method Group signature apparatus and method

2008-01-08

2008-01-08

Moazzami, Nasser (Department: 2136)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S156000, C713S175000

Reexamination Certificate

active

07318156

ABSTRACT:
A mail receiving section receives S/MIME signature mail from a host of a member. A member checking section checks the electronic signature of the signature mail for validity and determines whether or not the member belongs to a group. If the member checking section checks that the mail is from the valid member, a mail storing section requests an archive service section to archive the mail. A signature creating section uses a secret key unique to the group to create an electronic signature of the group. A mail transmitting section transmits the mail with the electronic signature of the group to the receiver.

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Yuh-Min Tseng et al. “Improved group signature scheme based on discrete logarithm problem” Jan. 7, 1999 pp. 37-28.
Harn, L “Group-oriented (t, n) threshold digital signature scheme anddigital multisignature” Sep. 1994, pp. 307-313.

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