A Key Backup and Recovery Method Based on Integrated Encryption Technology

Abstract

The invention belongs to the technical field of information security, in particular to a key backup and recovery method based on integrated encryption technology. The method of the present invention includes: configuring a security level, configuring different encryption algorithms and the amount of information that the user needs to input for the corresponding security level; obtaining an encryption key according to the user's biometric information and private information, and encrypting the key that the user wants to back up and store encryption algorithm; store the information generated by integrated encryption; when the key needs to be used for decryption or signature, the encrypted key needs to be decrypted and recovered; when the password needs to be changed, all initial keys must be obtained first Plaintext, re-encrypt; re-store the encrypted key, overwrite the old data, and complete the operation of modifying the password. The method of the invention balances security and ease of use, users set passwords with different security levels according to their own needs, and the integrated encryption algorithm solves the problem of imperfect key storage methods in the prior art.

Description

technical field [0001] The invention belongs to the technical field of information security, and particularly relates to a key backup and recovery method. Background technique [0002] Modern cryptography is mainly divided into symmetric cryptography and asymmetric cryptography (also known as public key cryptography). The correctness and security of cryptographic algorithms depend on mathematical problems: large integer decomposition problems, discrete logarithm problems, elliptic curve discrete logarithm problems Puzzles, all of which are based on calculations based on large integers. In the environment of rapid development of computer hardware, in academic research and production environments, the length of a secure cryptographic key must be at least 128 bits, and 256 bits is more commonly used. The more bits, the higher the security strength. Enterprises and general users have to memorize keys of up to 256 bits in daily production and use of secure cryptographic products...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a key backup and recovery method based on integrated encryption technology, which balances security and ease of use. Users can set passwords with different security levels according to their own needs to solve the problem of existing key encryption. The problem of imperfect storage method

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