TW324088B - Self-testing mechanism of password module security check - Google Patents

Abstract

A self-testing mechanism of password module security check, which checks related information for every password component based on module multiplication operation before sending message, in order to make output data error-free, comprises of: (1) One password checking apparatus (2) One auditing apparatus; In which the above password checking apparatus includes: <1> One checking unit, which receives one plain document M and one secret golden key d read from the above password document, by using the above secret golden key d to the above plain document M performing different encrypting operation, and simultaneously generating one cross-related encrypted document Cn and one checking data Cnr; <2> One calculating unit, which also receives the above secret golden key d and the above plain document M in order to generate one calculated data Cr; <3> One comparing unit, used to compare the above checking data Cnr and the above calculated data Cr; <4> One checking output unit, which operates according to comparison result of the above comparing unit, if equal, then it will output the above encrypted document Cn; otherwise one warning signal indicating error happening; And the above auditing apparatus includes: <1> One verification unit, which receives the above secret golden key d, the above plain document M, one random number V read from the above encrypted document and one verification data SV, by using the above secret golden key d, the above plain document M, and the above random number V getting one to-be verified data T, then comparing the above verification data SV and the above to-be verified data T; <2> One output unit, which receives encrypted document Cn output from the above checking output unit, then operates according to the comparison result of the above verification data SV and the above to-be verified data T, if result is equal, then outputs the above encrypted document Cn, I.e. only when the above checking data Cnr is equal to the above calculated data Cr, and the above verification data SV is equal to the above to-be verified data T, then the above encrypted document Cn will be output.