Transaction evidencing system and method including post printing

Details Transaction evidencing system and method including post printing Transaction evidencing system and method including post printing

1995-12-19

1998-11-10

Vu, Kim Yen

Cryptography

Key management

Having particular key generator

380 51, 36447901, 36447903, 705401, 705405, B41B 1500, G09C 308, G01T 3100

Patent

active

058356894

ABSTRACT:
A transaction evidencing system and method includes a host processor and an unsecured printer coupled to the host processor. A vault device that includes digital token generation and transaction accounting functions is operatively coupled to the host processor. The vault device generates a digital token in response to a first command from the host processor. The digital token and information relating thereto are stored in storage area in the vault and/or the host processor. The stored digital token and information relating thereto are selectively accessed for generating transaction evidencing indicia corresponding to the stored digital token. The unsecured printing structure prints the transaction evidencing indicia in response to a second command which is issued at a time subsequent to the first command. A batch of digital tokens may be generated and stored in an indexed file in the storage area before any indicia corresponding to the batch of digital tokens are generated and printed. The host processor may be a personal computer and the vault device may be a portable vault card that is removably coupled to the personal computer. The information related to the digital token is postal information including piece count, postage amount and addressee information and the indexed file is indexed according to addressee information.

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