High grade encrypting criterion encrypter in Gbpassive optical network system and implementing method thereof

Abstract

The invention discloses an advanced encryption standard (AES) encryption device of a gigabit passive optical network which comprises a data writing buffer module to save temporarily an encrypted source data, an encrypted information cache module to save temporarily a frame length encrypted with plaintext, an initial counter value and an initial key, an AES processing module to carry out data encryption, a data reading buffer module to save temporarily an encrypted data security data, an encrypted scheduling module to read and save temporarily a key and a frame length from the encrypted information cache module, to generate a counter value stream, to schedule the AES processing module, to input the processed counter value, security and source data into AES processing module and then transmit the encrypted data to the data reading buffer module. The invention further discloses a realizing method of the encryption device. The invention solves the problem that the prior art cannot adjust to higher needs of a bandwidth and a system frequency in a GPON high-speed system and satisfies the requirement of a fixed encryption delay in the GPON high-speed system at the same time.

Description

technical field [0001] The invention relates to the communication field, in particular to an advanced encryption standard encryption device in a gigabit passive optical network system and a realization method thereof. Background technique [0002] Since the standardization of the AES algorithm in 2001, many research institutions in the world have proposed a variety of hardware implementations of the AES algorithm, but at present there is no way to have a high encryption bandwidth under the condition of ensuring a certain logical scale, and they provide The interface is also difficult to combine with the actual situation of the GPON chip, so it cannot meet the actual needs of the GPON chip. [0003] The use of AES algorithm for encryption is to meet the security and reliability requirements of the GPON system. Because the ordinary AES algorithm is complex to implement and consumes a huge logic scale, it is very important to adopt a good implementation method to control the l...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an advanced encryption standard encryption device and its implementation method in a gigabit passive optical network system, which overcomes the shortcomings of insufficient encryption bandwidth and excessive consumption of logic resources in the prior art, and solves the current Existing technologies cannot meet the requirements of higher encryption bandwidth and system frequency in high-speed systems such as GPON, and at the same time meet the requirements of fixed encryption delay in GPON systems

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