Post-quantum signature method, post-quantum signature verification method and related devices
By using the Chinese hash algorithm to generate OTS and LMS signature data in the LMS signature verification method, the problem that the SHA256 algorithm in the existing method does not comply with the Chinese encryption standards is solved, and the quantum attack resistance and compliance of the signed data is achieved.
CN119728114APending Publication Date: 2025-03-28HUAWEI TECH CO LTD
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Patent Information
- Application Number
- CN202311267538.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-26
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The existing LMS signature verification method uses the US SHA256 algorithm and does not meet the encryption requirements of China's critical information infrastructure.
Method used
The OTS signature data is generated using Chinese hashing algorithms (such as SM3) and the OTS signature data is used to generate LMS signature data to ensure that the LMS signature data can withstand quantum attacks and comply with Chinese encryption standards.
Benefits of technology
By using the signed data generated by the Chinese hash algorithm, the problem that the SHA256 algorithm does not comply with the Chinese encryption standards is solved, and the quantum attack resistance and compliance of the signed data is achieved.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a post-quantum signature method, a post-quantum signature verification method and a related device, OTS signature data and LMS signature data can be generated by using a Chinese Hash algorithm, and the LMS signature data can resist quantum attacks and meet Chinese encryption requirements. The post-quantum signature method comprises the following steps: after selecting an OTS private key from an LMS private key, generating OTS signature data according to a Chinese Hash algorithm, the OTS private key, a first reference random number and a message, generating a Hash tree according to the LMS private key, generating an LMS public key according to a root node of the Hash tree, determining a brother node set in the Hash tree according to a target leaf node corresponding to the OTS private key, and sending the brother node set to the OTS private key; generating LMS signature data according to the serial number of the OTS private key, the OTS signature data, the LMS feature value and the brother node set; and sending the LMS public key, the LMS signature data and the message to a signature verification device.
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