Linkage encryption and decryption application mode based on multiple intelligent key storage devices

Abstract

The invention discloses a linkage encryption and decryption application mode based on multiple intelligent secret key storage devices, and the node comprises an encryption process and a decryption process. The encryption process comprises the steps: recombining file data to generate an initial encrypted data structure; encrypting a file directory sequence and a key disk sequence by using an asciimaximum hardware serial number key disk, and storing a serial number into the tail of the file; and encrypting the file by using all the key disks to generate an encrypted document structure. The decryption process comprises the steps: generating a to-be-decrypted file structure through regional decomposition; finding out the matched key disk decryption directory sequence and the key disk sequence, decrypting the file by using the matched key disk, and finally generating a complete document according to the directory sequence. The method provided by the invention has higher security and stronger algorithm compatibility. The application of the intelligent key disk in the field of file encryption is supplemented, the application mode of the intelligent key disk is enriched, and each data encryption chain corresponding to the intelligent key disk can be encrypted and decrypted according to the algorithm support of each key disk.

Description

technical field [0001] The invention relates to an intelligent key encryption technology, in particular to an application mode of linkage encryption and decryption based on multiple intelligent key storage devices. Background technique [0002] At present, there are many mature ways of using asymmetric keys in the industry, and they have been derived into a variety of products. The existing electronic signature solution is a protection scheme using a smart key disk to prevent tampering of documents. The electronic signature process is divided into three steps: the first step is to make an electronic seal. The user has two KEYs, a seal maker KEY, and a sealer KEY. The private key of the personnel KEY uses the specified algorithm to sign the entire seal to generate complete electronic seal data. The second step is to sign the seal, verify the validity of the signer and the seal maker, and use the public key of the seal maker to verify the signature value of the electronic se...

AI Technical Summary

Problems solved by technology

[0003] Existing electronic signatures belong to the application method of using smart key disks in the field of signature products, and are widely used in various industries. However, there are still the following shortcomings: First, the application of smart key disks in document encryption and decryption is less ; Second, the number of smart key disks that can be used at the same time for encryption and decryption is limited; Third, there are many kinds of asymmetric key encryption algorithms, and most of the electronic signatures use ECC (elliptic curve encryption algorithm) method is relatively limited

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