Patent ID: 6889325
Filing Date: 2005-05-03
Classification: G06Q,H04L

Abstract:
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.