Information encryption and decryption method

An information encryption and information decryption technology, applied in the field of information encryption and decryption, can solve problems such as management and translation difficulties, and the inability to ensure that information will not be cracked.

Inactive Publication Date: 2014-02-12
FUJIAN ZHONGGENG SHITONG INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simple encryption and decryption can no longer guarantee that information will not be cracked; AES, as a new generation of data encryption standard, brings together the advantages of strong security, high performance, high efficiency, ease of use and flexibility. The advanced encryption and decryption algorithm i

Method used

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Embodiment Construction

[0016] Below in conjunction with specific embodiment, the present invention is described in further detail:

[0017] The information encryption method of the present invention: comprises:

[0018] Step 1. For different platforms, the same encryption interface is uniformly designed, and the plaintext and key string to be encrypted are input at the encryption end, where the key is encrypted by base64;

[0019] Step 2. The encryption terminal reads the input plaintext and key according to the encrypted instructions, and parses them into corresponding plaintext byte streams;

[0020] Step 3. The encryptor initializes the plaintext byte stream and the key byte stream with the AES algorithm, initializes a 16×16 matrix as a replacement box, called an S-box, obtains the key array and uses it to generate a box named The key schedule for w[]; the first Nk rows of w[] are used as seeds, using the original key values ​​(0x00 to 0x17), and the remaining rows are generated from the seed ke...

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Abstract

The invention discloses an information encryption and decryption method. A replacement/permutation network method is adopted to fix cleartext packet length as 128b, and the key expansion process and the encryption process are carried out. The method is achieved through shifting and the exclusive OR operation achieved by the combinatorial logic. The achieving method replaces the complex multiplication, the encryption speed is increased, parallel running water is adopted to process a plurality of data blocks at the same time, and the throughput capacity is improved. Base64 is adopted by the calculated binary data to conduct secondary encryption on ciphertext and secrete key encryption, messages between different platforms are communicated through the base64 message mode, the platforms conduct analysis on results obtained after the base64 encryption, the problem of the difference between the message analysis results of the different platforms is solved, and the cross-platform data encryption and decryption are achieved.

Description

technical field [0001] The invention relates to an information encryption and decryption method, in particular to an AES information encryption and decryption method interoperable across platforms. Background technique [0002] In the use environment of confidentiality and security industries, the coordinated processing of mobile devices, computers, and various large-scale servers has become very popular. How to ensure the security of data packets between systems and prevent information from being simply deciphered is very important. Simple encryption and decryption can no longer guarantee that information will not be cracked; AES, as a new generation of data encryption standard, brings together the advantages of strong security, high performance, high efficiency, ease of use and flexibility. The advanced encryption and decryption algorithm is used in various fields; information is shared between different platforms, and message information is safely encrypted. Because of th...

Claims

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Application Information

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IPC IPC(8): H04L9/06
Inventor 陈祥耀
Owner FUJIAN ZHONGGENG SHITONG INFORMATION TECH CO LTD
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