Patent ID: 6549624
Filing Date: 2003-04-15
Classification: G06Q,G07D,G09C,H04L

Abstract:
A process for enhancing the security of a cheque, comprising:selecting private and public encryption keys associated with one of a cheque payor and cheque validator; selecting information found on the cheque wherein the selected information varies for each instantiation of the cheque presented by the same payor; encrypting a combination of the selected information and one of the private and public keys with a practicably secure cryptographic scheme to thereby generate a control code; printing the selected information and the control code on the cheque; reading the selected information from the cheque; decrypting the control code using the other of the private and public encryption keys to thereby obtain decrypted information; and the cheque validator refusing to honour the cheque if the selected information found on the cheque does not match the decrypted information.