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Based on the structure of the side channel attacks (SCAs) to RSA cryptosystem can resist the fault attack and combine with the randomization method for the message and secret exponent,a new implementation scheme of CRT-based (the Chinese remained theorem) RSA is proposed.The proposed scheme can prevent simple power analysis (SPA),differential power analysis (DPA) and time attack,and is compatible with the existing RSA-CRT cryptosystem as well.In addition,an improvement for resisting fault attack is proposed,which can reduce extra computation time.
Based on the structure of the side channel attacks (SCAs) to RSA cryptosystem can resist the fault attack and combine with the randomization method for the message and secret exponent, a new implementation scheme of CRT-based (the Chinese remains theorem) RSA is proposed . The proposed scheme can prevent simple power analysis (SPA), differential power analysis (DPA) and time attack, and is compatible with the existing RSA-CRT cryptosystem as well. In addition, an improvement for resisting fault attack is proposed, which can reduce extra computation time.