A distributed signature method and system based on elliptic curve
An elliptic curve, distributed technology, applied in the field of information security, can solve the problems of middleware development difficulty and middleware development difficulty, and achieve the effect of simple and convenient protocol, simple and convenient implementation, and guaranteed effectiveness.
Active Publication Date: 2018-08-03
BEIJING SANSEC TECH DEV
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Problems solved by technology
[0007] ●The development of middleware is difficult, and the development of middleware for hardware calls is relatively difficult
Method used
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[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0036] Such as figure 2 As shown, a distributed signature method based on elliptic curve, the signature method includes the following steps:
[0037] The client, the signature agency center and the signature business center all support the elliptic curve parameters E(Fp), G and n of the SM2 standard algorithm. The elliptic curve E is an elliptic curve defined on the finite prime number field Fp, and G is n on the elliptic curve E. base point, .
[0038] S1, the client registers to generate a pair of fixed public and private keys permanently bound to the user (P C , d C ), the client's own fixed public key P C Send to Signature Agency Center;
[0039] S2, the signature agency center according to the public key ...
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The invention relates to a distributed signature method and system based on an elliptical curve. The signature method comprises the following steps: a client generates fixed public and private keys permanently bonded to a user, and the fixed public key is sent to a signature agent center; the signature agent center generates a fixed public and private key pair according to the public key, and generates a signature public key through calculation and issues the signature public key; a signature service center sends a message to be signed to the client and the signature agent center; after the client receives the message to be signed, a temporary public and private key pair is generated, and the temporary public key is sent to the signature agent center; the signature agent center generates a temporary public and private key pair, calculates a signature message abstract e, completes a signature agent operation, and sends a signature agent result to the client; and finally the client carries out signature authorization, and signs the message. The invention also relates to a system corresponding to the method. Digital signature is finished together by three parties including the user, the signature service center and the signature agent center, so security is higher.
Description
technical field [0001] The invention relates to the technical field of information security, in particular to an elliptic curve-based distributed signature method and system. Background technique [0002] The elliptic curve signature scheme is one of the current mainstream signature schemes. The ECDSA standard is commonly used internationally, while the SM2 standard is adopted domestically. At present, these two signature schemes have a large application market in China. [0003] Digital signature is an important part of modern information security. The application of digital signature technology can identify tampering and masquerading, and can effectively prevent denial. Secure digital signatures determine the identities of both parties in applications such as electronic documents and electronic contracts, and are the basis for ensuring the authenticity of information. The current common digital signature application mechanism is to store the key information through a smar...
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IPC IPC(8): H04L9/08H04L9/30
CPCH04L9/0825H04L9/083H04L9/3066
Inventor 杨国强白连涛刘会议
Owner BEIJING SANSEC TECH DEV