Encryption and decryption achieving method and device

Abstract

The invention provides an encryption achieving method. A multistage pipeline structure is adopted to perform multistage encryption processing to received data. Corresponding processing including at least one-round encryption processing is performed to the data according to the stage number of an existing pipeline receiving data to be encrypted, and processed data serve as data to be encrypted of a next-stage pipeline to be output till a final-stage pipeline finishes the corresponding processing. The total time durations of the pipelines performing the corresponding processing are identical, the sum of total round number of encryption processing executed by all of pipelines is the total round number required by data encryption. The encryption achieving method adopt a pipeline mode and ensures that an encryption and decryption achieving method does not enable the data throughput rate to be over low and does not occupy excessive hardware resources, so that high data throughput rate and hardware resource occupation ratio are obtained. The invention further provides a decryption achieving method and an encryption and decryption achieving device.

Description

technical field [0001] The invention relates to the field of cryptography, in particular to a method and device for realizing encryption and decryption. Background technique [0002] Encryption technology is the most commonly used means of security and confidentiality. Encryption technology includes two important elements: algorithm and key. Algorithm is the step of combining intelligible information, that is, plaintext, with agreed data to generate incomprehensible ciphertext, and the agreed data refers to the key. In security and confidentiality, the security of information communication can be guaranteed through appropriate encryption algorithms. [0003] The AES algorithm is another block encryption algorithm recommended by NIST after DES and 3DE S. It has the characteristics of simple design, fast key installation, less memory space required, and works well on all platforms. Since its acceptance as a standard, the AES algorithm has been widely used by banking, govern...

AI Technical Summary

Problems solved by technology

[0006] At present, the way of implementing AES encryption and decryption process by hardware is either the data throughput rate is too low, or it takes up too much hardware resources, which affects the hardware implementation performance of encryption and decryption.

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