AES - Adavanced Encryption Standard

ADT AES C64x, C55x

FIPs – 197 AES Standard

The Adaptive Digital Technologies AES Encryption and Decryption allow a Texas Instruments DSP application to Encrypt and Decrypt character data according to the FIPs – 197 AES Standard.

AES is one of the most popular algorithms used in symmetric key cryptography.

FEATURES

Functions are C-callable.
Multi–Channel Implementation.

AVAILABILITY

ADT AES is available on the TMS320™ DSP Family

C64x/C64x+™ & C55x™ DSP Generations

SPECIFICATIONS

C55x
CYCLE COUNT *

Key Length	Encryption	Tables
128 bits	14092	18667
192 bits	17049	22642
256 bits	20027	26638

NOTE: *To calculate MIPs we use as an example, G729AB. The bit rate for this vocoder is 8000 bits/sec. This means there are 63 blocks of 128 bits per sec. The Encryption MIPs at a Key Length of 128 is 63 * 14092/sec = 0.887 MIPs.

MEMORY SPECIFICATIONS

All Memory usage is given in units of byte.

Software	Program Memory	Tables	Channel Memory
Encryption/ Decryption	2408	900	966
			966

C64x/64x+

CYCLE COUNT *

Key Length	Encryption	Tables
128 bits	7046	9334
192 bits	8525	11321
256 bits	10014	13319

NOTE:* To calculate MIPs we use as an example, G729AB. The bit rate for this vocoder is 8000 bits/sec. This means there are 63 blocks of 128 bits per sec. The Encryption MIPs at a Key Length of 128 is 63 * 7046 /sec = 0. 443 MIPs.

MEMORY SPECIFICATIONS
All Memory usage is given in units of byte.

Software	Program Memory	Tables	Channel Memory
Encryption/ Decryption	4816	1800	1932
			1932

FUNCTION

AES_ADT_ChanInst_t ChannelEncrypt; // Allocate Encryption channel space
AES_ADT_ChanInst_t ChannelDecrypt; // Allocate Decryption channel space