Two-factor authentication method based on convolutional coding

Abstract

The invention discloses a two-factor authentication method based on convolutional coding, which comprises an encryption process and a decryption process. The encryption process comprises the following steps: carrying out scrambling processing of palm print feature images of original palm print images to obtain a first palm print feature key; randomly generating an original key, and carrying out periodic extension and convolutional coding processing to obtain an intermediate key; and carrying out exclusive-OR processing of the intermediate key and the first palm print feature key to obtain encrypted information. The decryption process comprises the following steps: carrying out exclusive-OR processing of the encrypted information and a palm print feature key obtained for a second time; and carrying out convolutional decoding and voting to recover the original key. The two-factor authentication method based on the convolutional coding provided by the invention has the advantages that two-factor authentication for palm print biological features and the random key is achieved, so that the security is high; and in the decryption process, the exclusive-OR processing of the encrypted information and scrambled palm print features is carried out, and the convolutional decoding and the voting are then carried out to fully recover the original key, so that the authentication precision is improved.

Description

technical field [0001] The invention belongs to the field of identification and authentication, and in particular relates to a two-factor authentication method based on convolution coding. Background technique [0002] With the continuous advancement of the world's informatization process, information security issues will arouse more widespread attention. The struggle between stealing secrets and anti-stealing secrets is intensifying, especially in the field of information security, the work of keeping secrets is facing more and more new problems, which are becoming more and more complicated. Identification and authentication technology has become an important basis for information security and privacy protection, so it also puts forward higher requirements for identification and authentication technology. [0003] Traditional identification methods include identification items (such as keys, certificates, ATM cards, etc.) and identification knowledge (such as user names an...

AI Technical Summary

Problems solved by technology

[0003] Traditional identification methods include identification items (such as keys, certificates, ATM cards, etc.) and identification knowledge (such as user names and passwords). , its identity is easily impersonated or replaced by others

For example, common passwords, IC cards, bar codes, magnetic cards or keys, all have many unfavorable factors such as loss, forgetting, duplication and theft.

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