A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 217 / 812
1.16. Security System
1.16.1. Overview
The Security System (SS) is one encrypt/ decrypt function accelerator that is suitable for a variety of
applications. It supports both encryption and decryption. Several modes are supported by the SS
module.
It features:
AES, DES, 3DES, SHA-1, MD5 are supported by this system
ECB, CBC,CTS modes for AES/DES/3DES
128-bit, 192-bit and 256-bit key size for AES
160-bit hardware PRNG with 192-bit seed
32-word RX FIFO and 32-word TX FIFO for high speed application
Support CPU mode and DMA mode
Interrupt support
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