Certificateless distributed signature method and device, medium and electronic equipment
A distributed, certificate-free technology, applied in the field of information security, can solve problems affecting signature security, and achieve the effect of improving security and usability, improving efficiency, and reducing usage
Active Publication Date: 2021-06-04
中电科网络安全科技股份有限公司
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Problems solved by technology
[0003] However, the current certificateless signature scheme can only be signed by a single user
Once the private key of a single user is leaked or lost, it will greatly affect the security of the signature
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[0118] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0119] In order to enable those skilled in the art to better understand the solutions of the present disclosure, the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0120] Next, a signature method provided by an embodiment of the present disclosure is introduced in detail. figure 1 A signaling diagram of a signature method provided by an embodiment of the present disclosure, the method includes:
[0121] S101: The terminal device sends a signature private key request to the key generation center.
[0122] The key generation center (KGC) selects a random number k 0 as a p...
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The embodiment of the invention discloses a certificateless distributed signature method. A terminal device sends a signature private key request to a key generation center; and the key generation center calculates a public key generation parameter and a part of signature private keys according to the user identity information and the user public key information carried in the signature private key request. According to different signature types and certificateless distributed signature calculation rules, the terminal equipment calculates a signature result for an input message by utilizing a target certificateless distributed signature calculation rule corresponding to the signature private key request and partial signature private key and public key generation parameters. The invention provides a universal certificateless signature technology suitable for an elliptic curve, distributed expansion is carried out on the basis of the certificateless signature technology, equipment identity verification, signature verification public key generation and signature verification can be realized under the certificateless condition, and meanwhile, the distributed signature expansion can ensure that a signature private key is mastered by a plurality of users, and the security and availability of the signature private key are improved.
Description
technical field [0001] The present disclosure relates to the technical field of information security, and in particular, relates to a certificateless distributed signature method, device, computer-readable storage medium, and electronic equipment. Background technique [0002] Public Key Infrastructure (PKI) is a standard-compliant technology and specification that uses public key encryption technology to provide a secure basic platform for e-commerce. Among them, key and certificate management is the basis of PKI system operation. The certificateless signature scheme abandons the complex certificate management in the traditional PKI mechanism, avoids the private key custody problem of the identification password mechanism, and improves the application efficiency while ensuring the security of the user's signature private key. [0003] However, the current certificateless signature scheme can only be signed by a single user. Once a single user's private key is leaked or lo...
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IPC IPC(8): G06F21/60G06F21/62G06F21/64
CPCG06F21/602G06F21/6218G06F21/64
Inventor 王现方涂彬彬张立廷
Owner 中电科网络安全科技股份有限公司