a
R
DSP
ADSP-2141L
APPLICATIONS
Security Coprocessor for High Speed Networking Products (Routers, Switches, Hubs)
Cryptographic Core for Firewalls, Hardware Encryptors,
and More
Crypto Peripheral for Implementing Secure NIC Adapters (10/100 Ethernet, Token Ring, ISDN)
Secure Modem-on-a-Chip (V.34, ADSL)
SECURE KERNEL CONTROL
Tamper-Resistant Isolation of Cryptographic Functions
Enforces Security Perimeter Around Crypto Functions
and Crypto Storage Locations
Anticloning Protection
Secure Algorithm Download
SafeNet CGX LIBRARY
On-Chip SafeNet CGX Crypto Library with Flexible CGX
API
Includes Chained and Parallel Execution Commands
Such as Hash-and-Encrypt
Embodied as 32K Words (32K ؋ 24) Kernel Program
Mask-Programmed into On-Chip ROM
On-Chip Protected 4K ؋ 16 Security Scratchpad RAM
TE
FEATURES
DES CRYPTO BLOCK
640 Mbps Sustained Performance—Single DES
214 Mbps Sustained Performance—Triple DES
Supports All Modes: ECB; CBC; 64-Bit OFB; and 1-, 8-,
64-Bit CFB. Includes Automatic Padding
Implements IPsec ESP Transforms Autonomously at
OC-3 (155 Mbps) Rates (3-DES, SHA-1)
LE
RANDOM NUMBER GENERATOR
Hardware-Based Nondeterministic Random Number
Generator
Generates Internal Session Keys That Are Never
Exposed Outside of the SafeNet DSP
Redundant Fail-Safe Design
Up to 1.3 Mbits of Random Data Available per Second
HASH BLOCK
Hardware-Based SHA-1 and MD-5 Hashing
253 Mbps Sustained Performance—SHA-1
315 Mbps Sustained Performance—MD-5
Implements IPsec AH and HMAC Transforms
B
SO
FUNCTIONAL BLOCK DIAGRAM
KERNEL
MODE
CONTROL
BUS_MODE
IDMA MODE
INTERRUPTS
FLAGS
SPORT 0
SERIAL
PORTS
ADSP-218x
DSP CORE
KERNEL ROM
32K ؋ 24
PROG ROM
16K ؋ 24
O
SPORT 1
16
DATA ROM
16K ؋ 16
PCI MODE
PROTECTED
KERNEL
RAM
(4K ؋ 16)
INTERRUPT
CONTROLLER
TIMER
IDMA
INTERFACE
16
32
IDMA
BUS
PCI OR
CARDBUS
INTERFACE
32
16OR
32-BIT
BUS
DMA-32
CONTROLLER
ENCRYPT
BLOCK
(DES, 3-DES)
HASH
BLOCK
(MD-5, SHA-1)
APPLICATION
REGISTERS
PUBLIC KEY
ACCELERATOR
BUS_MODE
EMI BUS
EXTERNAL
MEMORY
INTERFACE
26-BITS
ADDR
PF7/INT_H
RNG
BLOCK
LASER
VARIABLE
STORE
SERIAL
EEPROM
INTERFACE
BUS_SEL
32-BITS
DATA
RAM/ROM
SafeNet is a registered trademark of Information Resource Engineering (IRE).
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
