Digi NS9215 Aes, Processes 32 bits at a time, Supports ECB, CBC, OFB, CTR, and CCM cipher modes

A E S D A T A E N C R Y P T I O N / D E C R Y P T I O N M O D U L E

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AES Data Encryption/Decryption

Module

C H A P T E R 6

	The AES data encryption/decryption module provides IPSec-compatible network
	security to processor-based systems. The AES core module implements Rijndael
	encoding/decoding in compliance with the NIST Advanced Encryption Standard
	(AES).
Features	Processes 32 bits at a time.
	Is programmable for 128-, 192-, or 256-bit key lengths.
	Supports ECB, CBC, OFB, CTR, and CCM cipher modes.
	Implements a hardware key expander to minimize software intervention during
	the encryption/decryption process. During encryption and decryption, the key
	expander can produce the expanded key on the fly.
	Exists behind external DMA channel 1 (see Chapter 6, “External DMA,” for
	information about DMA control registers and programming).
	Uses the buffer descriptor control field to indicate a memory-to-memory AES
	operation.

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