Finger print encryption and decryption method of electron decument

Abstract

The present invention relates to a fingerprint enciphering and deciphering method of electronic document. It can make electronic document obtain high-intensity safety protection. Said fingerprint enciphering method includes the following steps: using enciphering algorithm to produce key and store said key in key pool, inputting fingerprint, extracting characteristic value of fingerprint, comparing the inputted fingerprint with pre-registered fingerprint, judging characteristic value of fingerprint, taking out enciphered key and utilizing enciphering algorithm to enciphere file so as to implement fingerprint enciphering step of electronic document. Said invention also provides the correspondent fingerprint deciphering method.

Description

technical field [0001] The invention relates to a fingerprint encryption and decryption method, in particular to a fingerprint encryption and decryption method of an electronic document. Background technique [0002] Traditional methods for encrypting and decrypting electronic documents generally include two methods: encryption and decryption using keyboard passwords and encryption and decryption using software protection locks. The disadvantage of using keyboard passwords to encrypt and decrypt electronic documents is that the keyboard passwords are easy to be stolen by others, or sometimes the electronic documents cannot be accessed due to forgotten passwords, so this kind of encryption and decryption methods are not safe and flexible; The method for encrypting and decrypting mainly includes the following steps: read the EEPROM of the software protection lock, write the EEPROM of the software protection lock, then do a conversion, input a number, and see if the converted r...

AI Technical Summary

Problems solved by technology

The disadvantage of using keyboard passwords to encrypt and decrypt electronic documents is that the keyboard passwords are easy to be stolen by others, or sometimes the electronic documents cannot be accessed due to forgotten passwords, so this kind of encryption and decryption methods are not safe and flexible; The method for encrypting and decrypting mainly includes the following steps: read the EEPROM of the software protection lock, write the EEPROM of the software protection lock, then do a conversion, input a number, and see if the converted result is the expected result, but the conversion method is Irreversible, that is, the original number cannot be obtained from the converted number. Usually, it is judged whether the obtained data meets our requirements. If it meets, then continue to execute. If not, it will leave and end, so the decryptor is easier to find This section of the program, and then avoid this section of the operation of the software protection lock to achieve the purpose of cracking

To sum up, the traditional encryption and decryption methods of electronic documents cannot provide high-intensity security protection for electronic documents.

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