MCF5270CAB100 Freescale Semiconductor, MCF5270CAB100 Datasheet - Page 493

• Manufacturer Part Number: MCF5270CAB100
• Description: MCU V2 COLDFIRE 64K SRAM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: MCF527xr

Specifications of MCF5270CAB100

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 160-QFP
• Processor Series: MCF527x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: NNDK-MOD5272-KIT, NNDK-MOD5270-KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Chapter 26
Message Digest Hardware Accelerator
(MDHA)
26.1
This chapter describes the Message Digest Hardware Accelerator (MDHA).
26.1.1
The MDHA is a hardware implementation of two of the world’s most popular cryptographic hash
functions: SHA-1 and MD5. SHA-1 and MD5 are both critical algorithms to the IPSec (IP
Security) Protocol, a fast-spreading protocol for authentication and encryption over the internet in
networking equipment. The MDHA also includes circuitry to automate the process of generating
an HMAC (Hashed Message Authentication Code) as specified by RFC 2104 and EHMAC
(Enhanced Hashed Message Authentication Code), using only the SHA-1 algorithm.
26.1.2
The MDHA computes a single message digest (or hash or integrity check) value of all the data
presented on the input bus, using either the MD5 or SHA-1 algorithms for bulk data hashing. The
MDHA includes these distinctive features:
With any hash algorithm, the larger message is mapped onto a smaller output space. Therefore
collisions are potential, albeit not probable. The 160-bit hash value is a sufficiently large space
such that collisions are extremely rare. The security of the hash function is based on the difficulty
of locating collisions. That is, it is computationally infeasible to construct two distinct but similar
messages that produce the same hash output.
Freescale Semiconductor
• MD5 one way 128-bit hash function specified in RFC 1321.
• SHA-1 one way 160-bit hash function specified by the ANSI X9.30-2 and FIPS 180-1
• HMAC support for all algorithms, as specified in RFC 2104.
• EHMAC support for the SHA-1 algorithm.
• EHMAC key support up to 160 bits.
• Processes 512 bit blocks organized as 16 × 32 bit longwords.
• Automatic Message and Key Padding.
• Internal 16x32 bit FIFO for temporary storage of hashing data.
standards.
Introduction
Overview
Features
MCF5271 Reference Manual, Rev. 2
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