Soft and hardware decoding method and device and soft and hardware coding method and device

Abstract

The invention discloses a soft and hardware decoding method and device and a soft and hardware coding method and device. The soft and hardware decoding method comprises following steps: carrying out preliminary de-encapsulation processing to received IPSec protocol messages through a first decoding algorithm set in a chip; determining whether messages unreduced by the first decoding algorithm set are in the IPSec protocol messages after preliminary de-encapsulation processing; when determining that the messages unreduced by the first decoding algorithm set are in the IPSec protocol messages after preliminary de-encapsulation processing, sending the IPSec protocol messages after preliminary de-encapsulation processing to a central processing unit; and carrying out secondary reduction processing to the IPSec protocol messages after preliminary de-encapsulation processing through the central processing unit according to a second decoding algorithm set. Through the technical scheme provided by the invention, the software and hardware are combined; the features that the chip is high in processing capability and rapid in speed and the central processing unit is convenient in updating and strong in flexibility are realized; and the coding and decoding can reach the best effect.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a software and hardware decoding method, a software and hardware decoding device, a software and hardware encoding method, and a software and hardware encoding device. Background technique [0002] At present, the implementation of the IPsec protocol (Internet Protocol Security, Internet security standard framework) is implemented in a pure software or pure hardware manner. [0003] Among them, in the pure software method, the central processing unit performs packet encapsulation / decapsulation processing, and the central processing unit executes the verification algorithm and the encryption algorithm / decryption algorithm. Due to the large amount of calculation in the pure software method, the processing capacity is often limited. [0004] The pure hardware method often uses FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) or ASIC (an integrated circu...

AI Technical Summary

Problems solved by technology

However, the algorithm for processing messages often needs to be updated for various reasons. For example, if the DES (DataEncryptionStandard, Data Encryption Standard) algorithm is cracked, another algorithm must be replaced. However, in the pure hardware method, the replacement of hardware chips is not flexible enough , the required replacement cost is also higher

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