Help Center > > Encryption & Decryption> Developer Guide (KAE Encryption & Decryption )> Overview


Updated at: Aug 26, 2021 GMT+08:00

Kunpeng accelerator engine (KAE) is a hardware acceleration solution based on the Kunpeng 920 processor. It includes KAE encryption and decryption as well as KAEzip, which are used to accelerate SSL/TLS applications and data compression, respectively. Therefore, it can significantly reduce processor consumption and improve the processor efficiency. In addition, the KAE shields the internal processing details from the application layer. Users can quickly migrate services through the standard OpenSSL and zlib interfaces.

This document describes KAE encryption and decryption as well as its installation, test procedures, and use cases.

KAE Encryption and Decryption

The KAE encryption and decryption module uses the Kunpeng hardware acceleration engine to implement the RSA, SM3, SM4, DH, MD5, and AES algorithms. It provides high-performance symmetric and asymmetric encryption/decryption algorithms based on the lossless user-mode driver framework. Compatible with OpenSSL 1.1.1a and later versions, it supports the synchronous and asynchronous mechanisms.

Currently, KAE supports the following algorithms:

  • Digest algorithms SM3 and MD5, supporting asynchronous models.
  • Symmetric encryption algorithm SM4, supporting asynchronous models and CTR, XTS, CBC, ECB, and OFB modes.
  • Symmetric encryption algorithm AES, supporting asynchronous models and ECB, CTR, XTS, and CBC modes.
  • Asymmetric algorithm RSA, supporting asynchronous models and key sizes 1024, 2048, 3072, and 4096.
  • Key negotiation algorithm DH, supporting asynchronous models and key sizes 768, 1024, 1536, 2048, 3072, and 4096.

For details about the operations and applications of KAE encryption and decryption, see the following sections.

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