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Source code


Name: aes_highthroughput_lowarea
Created: Mar 3, 2010
Updated: Apr 1, 2012
SVN Updated: May 6, 2013

Other project properties

Category: Crypto core
Language: Verilog
Development status: Stable
Additional info: FPGA proven , Specification done
WishBone Compliant: No
License: LGPL


The High Throughput Low Area AES IP core implements the Rijndael encryption & decryption algorithm used in the AES standard. The standalone core implements the basic ECB mode described in publication 800-38A by NIST. Other modes can be easily implemented using the core.
The core implements both key expansion, required each time the key is changed (also after reset or power-up), and encryption/decryption algorithms. The core supports all three key lengths: 128, 192 & 256 bits, selected by an input signal. Encryption or decryption modes of operation are also selected on the fly using an input signal.
The core can achieve data rates of about 880Mbps with 256 bits key length, 1Gbps with 192 bits key length and 1.2Gbps with 128 bits key length when operated at a clock of 100MHz.
Test bench for basic simulation is provided to demonstrate the core functionality and interfaces. An additional test bench is supplied for verification of the core using the KAT test vectors files for ECB mode.

Block Diagram

Simplified core block diagram:
Simplified Block Diagram
For detailed information download the Core Specifications 0.2 document.

Synthesis Results

Manufacturer Family Device Device Utilization Elements Utilization Fmax
Xilinx Spartan 3 xc3s1500-4fg456 23% 3,110 Slices >100MHz
Xilinx Virtex 5 xc5vlx30-3ff324 45% 1,408 Slices >135MHz
Altera Cyclone III ep3c10f256c6 44% 4,657 LEs >110MHz
Altera Arria II GX ep2agx45cu17i3 13% 1,806 Registers
3,247 ALUTs