A multi-directional signature method for preventing side-channel attacks

A channel attack and multi-directional technology, applied in the field of information security, can solve problems such as weight inconsistency, attack, and inability to defend
CN106452789BActive Publication Date: 2019-06-18BEIJING HONGSI ELECTRONICS TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING HONGSI ELECTRONICS TECH
Publication Date
2019-06-18

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Abstract

The invention discloses a signature method of preventing side-channel attack from multi-azimuth. The signature method of preventing side-channel attack from multi-azimuth is characterized in that the technology or similar technology contained in the signature method masks the base, and an RSA signature or other public key system signatures are obtained; in the signature method of preventing side-channel attack from multi-azimuth, two module exponentiation results are obtained at the same time, and the power exponents are radix minus one complement for each other; when modular exponentiation is realized, the verification technology of preventing outputting error data is used; and for the modular exponentiation algorithm which does not use the jump statement, the signature method of preventing side-channel attack from multi-azimuth is the technology that during the operation process, the data or the operation result data is equal to the Hamming weight. The signature method of preventing side-channel attack from multi-azimuth effectively protects the step which is known and is easy to be attacked during the RSA STD operation process. The modular exponentiation provided by the signature method of preventing side-channel attack from multi-azimuth can be fully applied to the RSA CRT operation, and can realize that the algorithm of the modular exponentiation algorithm and the complementary power can be transplanted to the point multiplication operation of SM2 at the same time. The test that whether the module exponentiation is attacked can be similarly transplanted in the point multiplication operation of SM2.
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Description

technical field

[0001] The invention relates to the field of information security, in particular to a multi-directional signature method for preventing side channel attacks. Background technique

[0002] The RSA public key encryption algorithm is a relatively mainstream public key cryptography technology in the field of information security. Various Keys and smart cards based on RSA have been widely used in various fields such as finance, communication, social security, and transportation. Traditional attacks on RSA are mainly based on large prime number decomposition algorithms in mathematics. In recent years, side-channel attacks have developed rapidly, and various attack methods have emerged in an endless stream.

[0003] In the past, the protection of RSA signature mainly considered SPA, DPA, CPA, double attack and error attack. In order to prevent the above attacks, the existing schemes generally mask the exponent and the base when calculating the modular exponentiati...

Claims

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