Method and system for verifying the equality of a first secret code and a second secret code without revealing the first secret code and the second secret code

摘要

System and method for verifying the equality or inequality of a first and second secret code held by a first and second storage unit, respectively, without revealing the first and second secret code. The method comprises generating by the first and second storage unit, respectively, a first and second key from which the first and second secret code cannot be deduced; transmitting the first and second key to the second and first storage unit, respectively; generating on the basis of the first secret code and the second key a first combination key; generating on the basis of the second secret code and the first key a second combination key; comparing the first combination key with the second combination key; and concluding the equality or inequality of the first secret code and the second secret code when the first combination key and the second combination key are equal or non-equal, respectively.