Encryption/decryption method, encryption/decryption system, and encryption/decryption device for information transmission

Abstract

The invention discloses an encryption / decryption method for information transmission, and the method comprises an encryption step or / and a decryption step. The encryption step comprises carrying out the binding through a product number, inputting plaintext information for encryption, transmitting or displaying an encrypted ciphertext through a product, and clearing an encryption record. The decryption step comprises loading the encrypted ciphertext, determining whether the encrypted ciphertext is correct or not, decrypting the encrypted ciphertext if the encrypted ciphertext is correct, and giving an alarm for reminding if the encrypted ciphertext is wrong. The invention further discloses an encryption / decryption system and an encryption / decryption device provided with the encryption / decryption system. Compared with the prior art, the method has the advantages that the security of information storage is improved by performing secondary encryption on the original information, the diversity and randomness of account passwords are improved, and repeated use of the same password is avoided. The encrypted information is stored in the cloud, and the algorithm and the secret key are on anoffline product, so that the method is safer.

Description

technical field [0001] The invention relates to the field of information security, in particular to an encryption and decryption method for information transmission, an encryption and decryption system and an encryption and decryption device. Background technique [0002] The existing confidentiality methods are basically realized by using fixed user passwords and cloud databases. Since user passwords can only take specific expressions, their usable range is limited, and they can be directly cracked by using trial and error software and other decryption methods. The confidentiality is not high. Strong; the user's private information is stored by a third party without other encryption processing, so it is difficult to ensure that the user's information will not be "guarded and stolen" by the information custodian; the user's private information is saved through a specific password and database, once the user needs to save too much information , the password that the user need...

AI Technical Summary

Problems solved by technology

[0002] The existing confidentiality methods are basically realized by using fixed user passwords and cloud databases. Since user passwords can only take specific expressions, their usable range is limited, and they can be directly cracked by using trial and error software and other decryption methods. The confidentiality is not high. Strong; the user's private information is stored by a third party without other encryption processing, so it is difficult to ensure that the user's information will not be "guarded and stolen" by the information custodian; the user's private information is saved through a specific password and database, once the user needs to save too much information , it may appear that the passwords that users need to remember are too complicated and difficult to remember, which is not conducive to the preservation and management of private information

Images