Memory-Mapped SHA-1 Coprocessor

Securely Offloads SHA-1 Computation to FPGA or ASIC

Overview

Technical Documents

Ordering Info

Status

Part Number	Status	Explanation
DSSHA1	This product is Not Recommended for New Designs.	Newer versions exist. Contact factory for latest version.

Description

The DSSHA1 coprocessor with 64-Byte RAM is a synthesizable register transfer level (RTL) implementation of the FIPS 180-3 Secure Hash Algorithm (SHA-1), eliminating the need to develop software to perform the complex SHA-1 computation required for authenticating SHA-1 devices. The DSSHA1 can compute SHA-1 message authentication codes (MACs) for use with Maxim SHA-1 devices, such as the DS1963S, DS1961S, DS28E10, DS28E02, DS2460, DS28CN01, and DS28E01-100. The device can output the 20-byte MAC result from registers required for comparison against SHA-1 slave devices. When incorporated into a design, DSSHA1 also provides an offloading function, relieving a microcontroller of performing the SHA-1 computation.

Data Sheet

Download	Rev 0	(PDF, 244kB)
E-Mail

Key Features

SHA-1 Computations Within 670 Clock Cycles (13.4µs at a Typical Frequency of 50MHz)
Area Estimate is 102,256µm² in TSMC CL018G (0.18µm Generic Process)
Dedicated Hardware-Accelerated SHA-1 Engine for Generating MACs
64-Byte RAM for Message Input
Five 32-Bit Registers to Read the MAC Result
Available in Synthesizable Verilog®
Made as a Low-Level Module to be Instantiated by a Top-Level Module
Includes Test Bench

Applications/Uses

Identification and authentication of consumables
Printer Cartridge
Reference Design License Management
Secure Feature Control of Systems
Sensor/Accessory Authentication and Calibration
System Intellectual Property Protection

Diagram

Typical Operating Circuit

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-5870 Rev 0; 2011-05-31
This page last modified: 2011-05-31