CA2170834A1 - Apparatus and method for enhancing the security of negotiable documents - Google Patents

Apparatus and method for enhancing the security of negotiable documents

Info

Publication number
CA2170834A1
CA2170834A1 CA002170834A CA2170834A CA2170834A1 CA 2170834 A1 CA2170834 A1 CA 2170834A1 CA 002170834 A CA002170834 A CA 002170834A CA 2170834 A CA2170834 A CA 2170834A CA 2170834 A1 CA2170834 A1 CA 2170834A1
Authority
CA
Canada
Prior art keywords
cheque
security
image
monetary value
control code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002170834A
Other languages
French (fr)
Other versions
CA2170834C (en
Inventor
Calin A. Sandru
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ADVANCED SOFTWARE DESIGN Corp
Original Assignee
Calin A. Sandru
Advanced Software Design Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4157670&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2170834(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Calin A. Sandru, Advanced Software Design Corporation filed Critical Calin A. Sandru
Priority to CA002170834A priority Critical patent/CA2170834C/en
Priority to US08/808,266 priority patent/US6233340B1/en
Publication of CA2170834A1 publication Critical patent/CA2170834A1/en
Priority to US09/564,955 priority patent/US6549624B1/en
Priority to US10/184,998 priority patent/US6792110B2/en
Application granted granted Critical
Publication of CA2170834C publication Critical patent/CA2170834C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/04—Payment circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/04—Payment circuits
    • G06Q20/042—Payment circuits characterized in that the payment protocol involves at least one cheque
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
    • G07D7/0047—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip using checkcodes, e.g. coded numbers derived from serial number and denomination
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C5/00—Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash

Abstract

The invention relates to an apparatus and method for enhancing the security of selected information associated with a negotiable document, such as the monetary value of a cheque. In the invention, one or more security features are printed or applied onto the cheque. One such security feature is an encrypted control code. The preferred embodiment employs a secret key cryptographic scheme to encrypt the monetary value and thereby generate a first control code which is printed on the cheque. When the cheque is presented for payment, a validator, such as bank or cheque clearing house, employs a verification system having a copy of the encryption key to read the monetary value from the cheque and re-encrypt it according to said scheme to generate a second control code. The cheque is not honoured if the first and second control codes are not identical. Another security feature is a security image, composed, for instance, from a foreground image of the monetary value superimposed over a background motif image. The security image has a number of hidden attributes, such as the relative aspect ratios, absolute and relative dimensions of the underlying foreground and background images, that are preselected and used when printing the security image. When the cheque is presented for payment a teller can visually inspect the security image for compliance with certain of the preselected attributes. The preferred validation system can also electronically scan the security image for the hidden attributes. This comparison makes it difficult for a forger to copy, for instance, the monetary value of the cheque and add a significant digit to it because some of the foregoing preselected image attributes are liable to change and be detected. The composite image serves as a back-up security when verification of the encrypted control code is not possible.
CA002170834A 1996-03-01 1996-03-01 Apparatus and method for enhancing the security of negotiable documents Expired - Lifetime CA2170834C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002170834A CA2170834C (en) 1996-03-01 1996-03-01 Apparatus and method for enhancing the security of negotiable documents
US08/808,266 US6233340B1 (en) 1996-03-01 1997-02-28 Apparatus and method for enhancing the security of negotiable documents
US09/564,955 US6549624B1 (en) 1996-03-01 2000-05-04 Apparatus and method for enhancing the security of negotiable documents
US10/184,998 US6792110B2 (en) 1996-03-01 2002-07-01 Apparatus and method for enhancing the security of negotiable instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002170834A CA2170834C (en) 1996-03-01 1996-03-01 Apparatus and method for enhancing the security of negotiable documents

Publications (2)

Publication Number Publication Date
CA2170834A1 true CA2170834A1 (en) 1997-09-02
CA2170834C CA2170834C (en) 2006-11-21

Family

ID=4157670

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002170834A Expired - Lifetime CA2170834C (en) 1996-03-01 1996-03-01 Apparatus and method for enhancing the security of negotiable documents

Country Status (2)

Country Link
US (2) US6233340B1 (en)
CA (1) CA2170834C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2170643A1 (en) * 2000-03-20 2002-08-01 Sans Huecas Luis Security code used on cheques or printed documents of value

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Publication number Priority date Publication date Assignee Title
ES2170643A1 (en) * 2000-03-20 2002-08-01 Sans Huecas Luis Security code used on cheques or printed documents of value

Also Published As

Publication number Publication date
CA2170834C (en) 2006-11-21
US6233340B1 (en) 2001-05-15
US6549624B1 (en) 2003-04-15

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