MD5 IP Core Message Digest Function

Overview

The MD5 IP core is a high-performance implementation of the MD5 Message-Digest algorithm, a one-way hash function, compliant to the RFC 1321 specification. The core is composed of two main units, the MD5 Engine and the Padding Unit. The MD5 Engine applies the MD5 loops on a single 512-bit message block, while the Padding Unit splits the input message into 512-bit blocks and performs the message padding on the last message block.

The processing of each 512-bit block is performed in 66 clock cycles and the bit-rate achieved on the input of the MD5 core is 7.75Mbps / MHz.

The MD5 core is equipped with easy-to-use, fully stallable interfaces both for input and output. These are designed to permit the user’s application to pause the core output when it is not able to receive data or to stop the input stream towards the core according to data arrival rate.

Key Features

Compliant, High-Performance and Standalone Operation
- Compliant to the RFC 1321 MD5 specification
- Message length up to 2^64-1 bits
- 66 processing cycles per 512-bit message block
- Bit padding implemented internally
- Input message length multiple of 8-bit
- Initial value of the chaining variables selected before synthesis
- High-speed, flow controllable, streaming I/O data interfaces
Trouble-Free Technology Map and Implementation
- Fully portable, self-contained RTL source code
- Strictly positive edge triggered design
- D-type only Flip-Flops
- Fully synchronous operation
- No special timing constraints required
  - No false paths
  - No multi-cycle paths

Block Diagram

Deliverables

Clear text VHDL or Verilog RTL source for ASIC designs, or pre-synthesized & verified Netlist for Altera, Lattice, Microsemi and Xilinx FPGA and SoC devices
Release Notes, Design Specification and Integration Manual documents
Bit Accurate Model (BAM) and test vector generation binaries, including sample scripts
Self checking testbench environment, including sample BAM generated test cases
Simulation and sample Synthesis (for ASICs) or Place & Route (for FPGAs) scripts

Technical Specifications

Maturity

Silicon Proven

Availability

NOW

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