Cryptographic process for e.g. DSA signature, involves determining one coefficient from random variable based on preset function if random variable is greater than another coefficient of preset terminal of base

摘要

The process involves producing a random variable between a preset range. Another random variable in the preset range is produced if the former variable is lesser than a coefficient of a preset terminal of a base. Another coefficient is determined from the former variable according to a preset function if the former variable is greater than the former coefficient of the terminal for generating a random number. An independent claim is also included for a chip card including an electronic component having a random number generator.