AES | Advanced Encryption Standard

Advanced Encryption Standard

The AES algorithm is a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information ensuring the secure transfer of data.

TERMINOLOGY

AES CM – Advanced Encryption Standard counter mode

AES-f8 – AES in f8-mode, Universal Mobile Telecommunications System (UMTS) 3G mobile networks use AES-f8.

AES CBC – Advanced Encryption Standard Cipher-block chaining

Platforms

Availability

Platforms

Arm ® Devices – Armv7-A | Armv8-A | Armv9-A || Legacy Arm9E / Arm11

Texas Instruments – TI TMS320C7000 C7x, TMS320C6000 C64x/C64x+/C66x, TMS320C5000 C55x

MIPS32® 24KE™

Features

Encryption Algorithm Types: AES – CM, AES – F8, AES – CBC
Encrypt (encipher) and Decrypt (decipher)
Converts data to ciphertext; decrypting the ciphertext converts the data back into its original form, called plaintext
Functions are C-callable.
Multi–Channel Implementation.

Description

Advanced Encryption Standard (AES) is a United States government standard algorithm for encrypting and decrypting data.

The Adaptive Digital Technologies AES Encryption and Decryption encrypts and decrypts character data according to the FIPs – 197 AES Standard.

The Advanced Encryption Standard specifies a FIPS-approved cryptographic algorithm that can be used to protect electronic data. The AES algorithm is a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information. Encryption converts data to an unintelligible form called ciphertext; decrypting the ciphertext converts the data back into its original form, called plaintext.

Each AES cipher has a 128-bit block size, with key sizes of 128, 192 and 256 bits, respectively. The AES ciphers have been analyzed extensively and are now used worldwide. AES is one of the most popular algorithms used in symmetric key cryptography.

Specification Tables

NOTE: We specify MIPS (Millions of Instructions Per Second) as MCPS (Millions of Instruction Cycles Per Second). Unless otherwise specified, peak MIPS are indicated.

↓ Click on links below to view specification tables.

ARM Devices

Note: All CPU usage given in MIPS (also known as MCPS or MHz)

AES Cortex – A8/A9/A15

CYCLE COUNT

Key Length	Encryption	Decryption
128 bits	5000	6000
192 bits	6000	7000
256 bits	7000	7000

MEMORY REQUIREMENTS
All Memory usage is given in units of byte

Function	Program Memory	Tables	Channel Memory
Encryption / Decryption	6064	2104	488
			488

AES ARM9e / ARM11

CPU Utilization

Key Length	Encryption MIPS*	Decryption MIPS*
128 bit KeyLength	5000	6000
192 bit KeyLength	6000	6000
256 bit KeyLength	7000	7000

MEMORY REQUIREMENTS
All Memory usage is given in units of byte

Function	Program Memory	Tables	Channel Memory
Encryption / Decryption	9584	2104	488
			488

TI Processors

TI TMS320C6000

Note: All CPU usage given in MIPS (also known as MCPS or MHz)

AES C64x / C64x+ / C66x

CYCLE COUNT

Key Length	Encryption	Decryption
128 bits	2600	2500
192 bits	3100	3000
256 bits	3600	3500

CPU Utilization

Key Length	Encryption MIPS*	Decryption MIPS*
128 bit KeyLength	0.17	0.16
192 bit KeyLength	0.20	0.19
256 bit KeyLength	0.23	0.22

MEMORY REQUIREMENTS
All Memory usage is given in units of byte

Function	Program Memory	Tables	Channel Memory
Encryption / Decryption	5064	2104	488
			488

TI TMS320C5000

AES C55x

CYCLE COUNT

Key Length	Encryption	Decryption
128 bits	7562	9091
192 bits	9052	11221
256 bits	10618	13072

CPU Utilization

Key Length	Encryption MIPS*	Decryption MIPS*
128 bit KeyLength	0.48	0.62
192 bit KeyLength	0.57	0.70
256 bit KeyLength	0.67	0.82

MEMORY REQUIREMENTS
All Memory usage is given in units of byte

Function	Program Memory	Tables	Channel Memory
Encryption / Decryption	1468	4196	968
			968

TI MSP430 Ultra-Low-Power MCU

MEMORY REQUIREMENTS
All Memory usage is given in units of byte

Function	Program Memory	Tables	Channel Memory
Encryption / Decryption	2044	2078	488
			488

API Functions

API function call summary

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