SM2 signature authentication method and system

Abstract

The invention discloses a method and system for authenticating an SM2 (Smart Media 2) signature, relating to the technical fields of digital signature and authentication technology. The method for authenticating the SM2 signature is implemented through an ASIC (Application Specific Integrated Circuit) chip in which an ECDSA (Elliptic Curve Digital Signature Algorithm) is adopted. The method comprises the following steps of: 1, converting an SM2 signature waiting to be authenticated into a corresponding ECDSA signature; 2, authenticating the ECDSA signature obtained by conversion by using the ASIC chip in which the ECDSA is adopted; and 3, performing out-chip modular addition operation on an authentication result of the ECDSA signature, authenticating a modular addition operation result toobtain an authentication result of the SM2 signature, and returning a result indicating whether the signature is received. In the method, the SM2 signature is converted into the ECDSA signature, and ECDSA authentication is performed on the ECDSA signature to obtain the authentication result of the SM2 signature, so that an SM2 algorithm can be directly realized by using the conventional ASIC chipfor realizing ECDSA signature authentication, a chip design special for SM2 signature authentication is not required, and the developing period is shortened.

Description

technical field [0001] The invention relates to the technical field of digital signature and authentication, in particular to an SM2 signature authentication method and system. Background technique [0002] Cryptographic systems can be divided into traditional (or symmetric) encryption systems and public key (or asymmetric) encryption systems. In 1976, W.Diffie and M.E.Hellman proposed the concept of public key cryptography, which had a profound impact on the development of the entire cryptography. The currently widely used public key cryptosystem is RSA, which has the advantages of simple principle and convenient use. However, with the continuous improvement of the large integer factorization method and the continuous improvement of computer performance, the number of key bits required to ensure the security of RSA continues to increase. At present, it is generally believed that the number of bits of the RSA key is more than 1024 bits to ensure security. . The increase i...

AI Technical Summary

Problems solved by technology

According to the ASIC chip that implements the ECDSA algorithm, the SM2 algorithm cannot be directly implemented, which has become an obstacle to the popularization and use of the SM2 algorithm.

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