Hybrid signature and signature verification method, device and system
A signature data, to be verified technology, applied in the field of cryptography and information security, can solve the problem that the mixed use of two signature algorithms cannot be accurately realized, and achieve a balance between security rigor and user-friendliness, user-friendliness balance, and security rigor sexual balance effect
Active Publication Date: 2019-06-07
广东信鉴信息科技有限公司 +1
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Problems solved by technology
[0004] Based on this, it is necessary to provide a mixed signature and signature verification method, device and system for the problem that the traditional technology cannot accurately realize the mixed use of the two signature algorithms
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Embodiment 1
[0052] In order to solve the problem that the traditional technology cannot accurately realize the mixed use of two signature algorithms, the present invention provides a hybrid signature method embodiment 1; figure 1 It is a schematic flow chart of Embodiment 1 of the hybrid signature method of the present invention; as figure 1 As shown, the following steps may be included:
[0053] Step S110: receiving the preset initial parameters and user ID transmitted by the server;
[0054] Step S120: Generate user public key and preset additional data respectively according to preset initial parameters;
[0055] Step S130: In the additional information field of the PDF document to be signed, the user ID, user public key and preset additional data are used as additional information, and the original text information of the PDF document to be signed is filled to obtain the filled original text information;
[0056] Step S140: According to the filled original text information and prese...
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The invention relates to a hybrid signature and a signature verification method, a device and a system. The hybrid signature method comprises the following steps: receiving a preset initial parameter and a user identity ID transmitted from a server-side; respectively generating a user public key and a preset additional data according to the preset initial parameter; taking the user identity ID, the user public key and the preset additional data as the additional information in an additional information domain of a to-be-signed PDF document, filling original information of the to-be-signed PDF document to obtain the filled original information; according to the filled original information and the preset initial parameter, respectively obtaining the first signature data and the second signature data through a signature operation of a corresponding signature algorithm in the hybrid signature; performing mutual exclusion storage on the first signature data and the second signature data in the signature domain of the to-be-signed PDF document, thereby obtaining a to-be-verified PDF document. The hybrid signature and signature verification method disclosed by the invention are suitable for being deployed to a scene needing to mix two signature algorithms and provide the friendliness verification.
Description
technical field [0001] The invention relates to the fields of cryptography and information security, in particular to a mixed signature and signature verification method, device and system. Background technique [0002] In some scenarios with high security level requirements, the mixed use of two signature algorithms (such as elliptic curve digital signature algorithm and identity-based signature algorithm) is required to increase the security and effectiveness of electronic signatures. [0003] However, in the process of realizing the mixed use of the two signatures, the inventors found that there are at least the following problems in the traditional technology: when the traditional technology is used in a mixed way, for the convenience of engineering, the two signature algorithms are not associated. Used independently, this is an obvious contradiction to "mixed use". Furthermore, even if the traditional technology associates the two signature algorithms, it cannot ensure...
Claims
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IPC IPC(8): H04L9/32H04L9/30H04L9/08
CPCH04L9/0822H04L9/0825H04L9/0869H04L9/3066H04L9/3073H04L9/3247H04L9/3252H04L9/3268
Inventor 卢伟龙张永强
Owner 广东信鉴信息科技有限公司