Cryptography – Electric signal modification – Having production of printed copy
Patent
1997-05-21
2000-08-29
Cangialosi, Salvatore
Cryptography
Electric signal modification
Having production of printed copy
380 55, 705 67, 713179, H04K 100
Patent
active
061119539
ABSTRACT:
A system is described whereby a document may be authenticated by an issuer thereof and verified by a recipient. Data from the document, at least a portion of which is specific to the document and identifies the document, is input to an authenticating device using an input device. A computing device, including a cryptographic processor and a memory, is coupled to said input device and receives a signal representing the data. The computing device performs a cryptographic operation based on the data to produce encrypted authentication data unique to the document. An output device is coupled to the computing device and affixes a representation of the authentication data on the document. A similar device, including a display device, is used to input the encrypted data, perform a cryptographic operation to decrypt the data, and compare the decrypted data with document identification data to verify the document. Encryption and decryption are performed using a private key/public key pair.
REFERENCES:
patent: 3541960 (1970-11-01), Dilsner et al.
patent: 4385285 (1983-05-01), Horst et al.
patent: 4413951 (1983-11-01), Allen, Jr.
patent: 4725718 (1988-02-01), Sansone et al.
patent: 4816655 (1989-03-01), Musyck et al.
patent: 4893338 (1990-01-01), Pastor
patent: 5001752 (1991-03-01), Fischer
patent: 5090699 (1992-02-01), Friedman
patent: 5142577 (1992-08-01), Pastor
patent: 5157726 (1992-10-01), Merkle et al.
patent: 5191613 (1993-03-01), Graziano et al.
patent: 5214702 (1993-05-01), Fischer
patent: 5239165 (1993-08-01), Novak
patent: 5274567 (1993-12-01), Kallin et al.
patent: 5341428 (1994-08-01), Schatz
patent: 5373561 (1994-12-01), Haber et al.
patent: 5388158 (1995-02-01), Berson
patent: 5398283 (1995-03-01), Virga
patent: 5426700 (1995-06-01), Berson
patent: 5586036 (1996-12-01), Pintsov
patent: 5633932 (1997-05-01), Davis et al.
patent: 5652794 (1997-07-01), Lepetit et al.
patent: 5768384 (1998-06-01), Berson
patent: 5901224 (1999-05-01), Hecht
patent: 5912974 (1999-06-01), Holloway et al.
patent: 5923762 (1999-07-01), Dolan et al.
patent: 5923763 (1999-07-01), Walker et al.
patent: 5926551 (1999-07-01), Dwork et al.
Barton Crockett, "Chase Readies Wholesale Image Service", The American Banker, Sep. 13, 1993 at p. 15.
"Secure Check -4+ Compatible With HP Laserjet 4 Plus", PC Business Products, Jul. 1994.
Vern Lysford, "Create-A-Check Software Review", Management Accounting (USA), Sep. 1994 at p. 71.
Paul J. Geary and R. David Randall, "Create-A-Check Software", Massachusetts CPA Review, Spring 1995 at p. 32.
Geoffrey Wheelwright, "New Ways to Beat the Fraudsters", Financial Times, Jul. 5, 1995 at p. 4.
"Photo Checks Reduces Fraud, Approves Checks", NCUA Watch, Feb. 19, 1996 at p. 5.
"Toppan Printing Develops Transparent Bar Code System", Japan Economic Newswire, May 29, 1996.
Tony Timmons, "Check Fraud Costs Local Businesses More Than $180 Million Annually", Central Penn Business Journal, Jul. 19, 1996 at p. 2.
Jorasch James A.
Schneier Bruce
Walker Jay S.
Alderucci Dean
Cangialosi Salvatore
Vogel Peter J.
Walker Digital, LLC
LandOfFree
Method and apparatus for authenticating a document does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for authenticating a document, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for authenticating a document will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1256824