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Method and system for real-time registration of transactions with a security module

  • US 7,222,238 B2
  • Filed: 07/11/2002
  • Issued: 05/22/2007
  • Est. Priority Date: 07/16/2001
  • Status: Expired due to Fees
First Claim
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1. A method for real-time registration of transactions with security against tampering using a security module, comprising the steps of:

  • providing a security module and a translog file accessible by said security module and in communication with a translog file analyzer;

    generating at least one encrypted, initial security value as ciphered text in said security module and subsequently forming a current security value from said initial security value according to a first mathematical function that is also employed by said translog file analyzer, that allows derivation of a plurality of subsequent security values for securing and verifying subsequently occurring unencrypted real-time entries respectively representing subsequently occurring transactions;

    listing said real time entries, identified by a flag, in said translog file dependent on a sequence counter reading;

    for each of said real-time entries, generating an authentication code with said security module by inserting said real-time entry and said current security value into an algorithm operating with a second mathematical function for said authentication code, also employed by said translog file analyzer;

    securing each of said real-time entries by appending said authentication code generated for that real-time entry to that real-time entry; and

    registering each real-time entry, secured with said authentication code, as a dataset.

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