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Advanced encryption standard (AES) algorithm-based encryption/decryption method and device

An encryption method and algorithm technology, which is applied in the field of communication, can solve problems such as the limited encryption strength of the AES algorithm and the unsatisfactory encryption effect, and achieve the effect of solving security problems and improving security performance

Inactive Publication Date: 2011-04-20
INSPUR BEIJING ELECTRONICS INFORMATION IND
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] However, the encryption strength of the AES algorithm is limited, especially for communication fields with high security requirements, its encryption effect is not very ideal

Method used

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  • Advanced encryption standard (AES) algorithm-based encryption/decryption method and device
  • Advanced encryption standard (AES) algorithm-based encryption/decryption method and device
  • Advanced encryption standard (AES) algorithm-based encryption/decryption method and device

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Embodiment Construction

[0047] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] see figure 1 , the figure shows an encryption method based on an AES algorithm in an embodiment of the present invention, comprising steps:

[0049] Step S101: Encrypt the plaintext with an AES key to obtain the ciphertext of the plaintext;

[0050] Step S102: Encrypt the AES key by using the public key of the receiving end to obtain the ciphertext of the AES key;

[0051] Step S103: Obtain the information abstract of the plaintext, and encrypt the information abstract using the private key of the sender.

[0052] Wherein, the order of the above steps S101 to S103 is not fixed, and can be set according to needs, or the encryption processing of the plaintext, the information digest and the AES key can be performed at the same time, which is not limited in the present invention.

[0053] In order to show the encryption process of the embodiment...

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Abstract

The invention provides advanced encryption standard (AES) algorithm-based encryption / decryption method and an AES algorithm-based encryption / decryption device. The encryption method comprises the following steps of: encrypting a plaintext by using an AES secret key to obtain a ciphertext of the plaintext; encrypting the AES secret key by using a receiving end public key to obtain the ciphertext of the AES secret key; acquiring an informative abstract of the plaintext; and encrypting the informative abstract by using a transmitting end private key to obtain an abstract signature. By the encryption method and the decryption method corresponding to the encryption method, the safety problem in the data transmission process can be effectively solved, so that the safety performance of the whole system or product is improved.

Description

technical field [0001] The invention relates to the communication field, in particular to an encryption and decryption method and device based on an AES algorithm. Background technique [0002] At present, due to the increasingly wide application of network communication, the security of data transmission is becoming more and more important in the communication process, and the method of encrypting data in data transmission has undoubtedly become the best choice to ensure data security. [0003] The National Institute of Standards and Technology (NIST) established a new Advanced Encryption Standard (AES) specification on May 26, 2002. AES is a new encryption algorithm that can be used to protect electronic data. Specifically, AES is an iterative, symmetric-key block cipher that can use 128-, 192-, and 256-bit keys, and encrypts and decrypts data with 128-bit (16-byte) blocks. Unlike public-key cryptography, which uses a key pair, symmetric-key cryptography uses the same ke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/30H04L9/06
Inventor 穆裕刘非
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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