MD5
Features
- RFC 1321 compliant
- Suitable for data authentication applications
- Fully synchronous design
- Also available in VHDL or Verilog source code
Block Diagram
Figure 1 shows the block diagram for the MD5 megafunction.
Description
This megafunction is a fully compliant hardware implementation of the MD5 Message-Digest Algorithm, suitable for a variety of applications. It computes a 120-bit message digest for messages of up to (264 – 1) bits.
The MD5 algorithm is an improved version of the MD4, created by Professor Ronald L. Rivest of MIT and is closely modeled after that algorithm. It operates on message blocks of 512 bits for which a 128-bit (4 by 32-bit word) digest is produced. Corresponding 32-bit words of the digest from consecutive message blocks are added to each other to form the message of the whole message.
Device Utilization Example
Table 1 lists the typical device utilization results for the megafunction.
| Table 1. Typical Device Utilization for the Megafunction |
| Device |
Speed Grade |
Utilization |
Performance
(fMAX) |
Parameter Setting |
| Logic Elements (1) |
Memory |
| FLEX® 10K50 |
-1 |
2,262 |
2 EABs |
25 MHz |
Contact CAST |
| ACEX® 1K50 |
-1 |
2,261 |
2 EABs |
26MHz |
Contact CAST |
| APEX™ 20K60E |
-1 |
2,285 |
2 ESBs |
39 MHz |
Contact CAST |
| APEX II 2A15 |
-7 |
2,290 |
2 ESBs |
60 MHz |
Contact CAST |
| Cyclone™ 1C20 |
-6 |
1,527 |
1 M4K |
69 MHz |
Contact CAST |
| Stratix® 1S20 |
-5 |
1,527 |
1 M4K |
69 MHz |
Contact CAST |
| Stratix II 2S60 |
-3 |
1,259 |
1 M4K |
115 MHz |
Contact CAST |
Note to Table 1:
- The Logic Element count for Stratix II devices is based on the number of adaptive look-up tables (ALUTs) used for the design as reported by the Quartus® II software.
Contact Information
For additional information, contact CAST, Inc. at:
CAST, Inc.
11 Stonewall Court
Woodcliff Lake, NJ 07677, USA
Phone: +1 (201) 391-8300
Fax: +1 (201) 391-8694
Email: info@cast-inc.com
URL: http://www.cast-inc.com
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