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Encryption and decryption method capable of automatically retrieving keys and selecting algorithms

A technology for automatic retrieval and selection of algorithms, which is applied in the field of encryption and decryption of automatic retrieval of keys and selection algorithms, can solve problems such as key security risks, complex and changeable data structures, long-term storage of keys, etc., and achieve the goal of improving security Effect

Active Publication Date: 2015-02-18
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT +1
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AI Technical Summary

Problems solved by technology

[0007] However, when a large amount of data needs to be encrypted and stored, the data structure of the encrypted object is complex and changeable, and the decryption is delayed, and the key needs to be stored for a long time
A single encryption algorithm cannot satisfy the changing data structure. Encryption with a unique key will cause security risks in storing the key for a long time

Method used

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  • Encryption and decryption method capable of automatically retrieving keys and selecting algorithms
  • Encryption and decryption method capable of automatically retrieving keys and selecting algorithms
  • Encryption and decryption method capable of automatically retrieving keys and selecting algorithms

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Embodiment Construction

[0039] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0040] The invention relates to an encryption and decryption method for automatically retrieving a key and selecting an algorithm, in particular to a method for retrieving a key in a key store according to characteristics of sensitive information and selecting an encryption algorithm for encryption and decryption.

[0041] The specific steps are as follows: figure 1 As shown, it includes generating a key storehouse, extracting data features, automatically retrieving the key storehouse, selecting an encryption algorithm, adding and expanding schemes, and corresponding encryption and decryption operations.

[0042] Step 1. Generate the keystore used by the encrypted object,

[0043] A single key consists of two parts: the key head and the key tooth. The key head is a mark abstracted based on the mapping relationship. The key tooth part is the effective...

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Abstract

The invention discloses an encryption and decryption method capable of automatically retrieving keys and selecting algorithms, which comprises the following steps: generating a keystore used by a cryptographic object; extracting the data characteristic of an encrypted object, thereby obtaining the processed data first byte; according to the extracted data characteristic, automatically retrieving the keystore; according to the data feature, selecting an encryption algorithm; according to different encryption scenes, carrying out user-defining on an additional expansion scheme; and performing an encryption and decryption algorithm on the encrypted object. Based on the existing encryption algorithm, the keystore is used for replacing the traditional single key, so that the safety of key management is enhanced, the key is selected according to the data characteristic, an appropriate encryption algorithm is selected to play the best encryption performance, and the additional expansion scheme can be supported to meet the specific encryption scene, therefore, the method has very high practicality and adaptability, and has very wide application scenarios.

Description

technical field [0001] The invention belongs to the technical field of data encryption security, in particular to an encryption and decryption method for automatically retrieving keys and selecting algorithms. Background technique [0002] The existing commonly used encryption algorithms include DES (full name: Data Encryption Standard), AES (full name: Advanced Encryption Standard), RC4 (also known as ARC4, Alleged RC4) and RSA, among which the RSA public key encryption algorithm was established in 1977. Proposed by Ronald Rivest (Ron Rivest), Adi Shamir (Adi Shamir) and Leonard Adleman (Leonard Adleman), RSA is composed of the initial letters of their three surnames . [0003] The existing commonly used encryption algorithms each have their own advantages and disadvantages. The DES and AES algorithms have high complexity, and although the security level can be guaranteed, they are based on the characteristics of data blocks, which makes them have blind spots: it is imposs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/30
Inventor 陈训逊吴震王洋谢铭杨帆邹学强
Owner NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
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