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Transaction method and system for data networks, like internet

  • US 6,889,325 B1
  • Filed: 04/28/2000
  • Issued: 05/03/2005
  • Est. Priority Date: 04/28/1999
  • Status: Expired due to Fees
First Claim
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1. A method for sending an authenticatable message, containing message data, from a data input/output device of a first party via a data network to a data input/output device of a second party, comprising:

  • providing a message having message data in the data input/output device of a first party;

    providing a table of n random numbers in the data input/output device of the first party, each number having a predetermined position in the table;

    splitting the message data into m digits by the input/ontput device of the first party, the splitting comprising subjecting the message data to a hashing operation to provide a hashing code, and splitting the hashing code into m digits, each digit representing a value between 1 and n, where m is smaller than n;

    assembling a digital signature in the input/output device of the first party, wherein the digital signature comprises a string of the random numbers of which the position in the table is indicated by the digits, and wherein the digital signature is validatable by comparison with a registered first party reference profile;

    adding the digital signature to the message to form an authenticatable message; and

    sending, via a data network, the digitally signed message to an input/output device of a second party.

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