Digital signature generation method and device

Abstract

Disclosed are a digital signature generation method and apparatus, and a computer device. The method comprises the following steps: selecting, from values of at least two key value pairs, a specified digit of characters to form an initial character string; conducting encryption processing on the initial character string to generate an encrypted character string; and generating a digital signature according to the encrypted character string. Since the way in which a character is selected is self-defined, the complexity of a generation rule of a digital signature is increased, thereby improving the security of the digital signature.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a digital signature generation method and device. Background technique [0002] A digital signature is a digital string that only the sender of the message can produce and cannot be forged by others. This digital string is also an effective proof of the authenticity of the message sent by the sender of the message. Digital signature technology is to encrypt the summary information with the sender's private key (private key), and transmit it to the receiver together with the original text. The recipient can only decrypt the encrypted summary information with the sender's public key, and then use the HASH function to generate a summary information for the received original text, and compare it with the decrypted summary information. If they are the same, it means that the received information is complete and has not been modified during transmission, otherwise it mean...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the generation rules of existing digital signatures are relatively simple, and its security is mainly guaranteed by encryption algorithms. Once a third party steals the encrypted private key, it can imitate the digital signature and carry out digital signatures like the owner of the real key. Signature, so that the data in transmission can be hijacked and tampered at will, and the identity authentication and the authorized authority can be obtained, so the security needs to be further improved

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