METHOD FOR PROTECTING AN ELECTRONIC CRYPTOGRAPHIC SET WITH SECRET KEY AGAINST CRYPTANALYTICAL ATTACK

摘要

The invention relates to a secret-key cryptographic calculation process for protecting a computer system against physical attacks, wherein a) the standard cryptographic calculation process is separated into several distinct, parallel process parts using partial intermediate results distinct from those of the standard calculation, and b) the final value of the standard cryptographic calculation is reconstructed from the distinct partial intermediate results.The invention is particularly applicable to computer systems such as embedded systems such as a smart card.