Privacy-protected transfer of electronic information

Details Privacy-protected transfer of electronic information Privacy-protected transfer of electronic information

1994-02-28

1996-05-28

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Public key

380 25, 380 28, H04L 930

Patent

active

055219802

ABSTRACT:
Cryptographic apparatus and means are disclosed for each of three types of participants in an electronic system for privacy-protected transfer of certified information. This invention reveals protocols that improve efficiency and security in such systems, and allows a variety of useful extensions in functionality without difficulty. This is achieved by a restrictive blind signature protocol in combination with a testing protocol. The restrictive blind signature protocol allows the certifying party to encode data into certified information that it provides to a receiving party, such that it cannot be altered or modified by the receiving party. The testing protocol enables parties to prove a variety of characteristics about the encoded data in their certified information.

REFERENCES:
patent: 4529870 (1985-07-01), Chaum
patent: 4759063 (1988-07-01), Chaum
patent: 4759064 (1988-07-01), Chaum
patent: 4868877 (1989-09-01), Fischer
patent: 4914698 (1990-04-01), Chaum
patent: 4926480 (1990-05-01), Chaum
patent: 4949380 (1990-08-01), Chaum
patent: 5005200 (1991-04-01), Fischer
patent: 5214702 (1993-05-01), Fischer

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