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Low Gate Count AES Core

The Advanced Encryption Standard (AES) is a FIPS-approved cryptographic algorithm that can be used to protect electronic data. The AES algorithm is a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information. Encryption converts data to an unintelligible form called ciphertext; decrypting the ciphertext converts the data back into its original form, called plaintext.

The AES algorithm is capable of using cryptographic keys of 128, 192, and 256 bits to encrypt and decrypt data in blocks of 128 bits. Also, the AES algorithm is used in different operation modes. The different modes include the Electronic Code Book (ECB) mode, the Cipher Block Chaining (CBC) mode, the Cipher Feed Back (CFB) mode, the Output Feed Back (OFB) mode, and the Counter (CTR) mode. The CBC, CFB and OFB modes have feedbacks and the ECB and CTR modes have no feedbacks. Hence, full parallel implementation of the encryption/decryption rounds will improve the data throughput of the ECB and CTR mode dramatically.

The low gate count AES core developed by Highland Communications Technologies is fully compliant with the AES standard published in FIPS PUB 197. It supports all the key lengths. The key expansion unit is integrated in the core. The encryption and decryption is run time programmable. Highland will custom design the wrapping logic to support different operation modes for free.

The resource usage and performance parameters of the core are listed in table 1.

Table 1. Resource Usage And Performance Parameters For The Low Gate Count AES Core

Platform CLB Slices Block Ram 18x18 Multipliers Clock Speed Data Throughput
Virtex IV 293 1 0 318 MHz 904 Mbps


Availability And Deliverables

The AES core is available now. Deliverables include source code in VHDL or Verilog, netlist file for Xilinx and Altera FPGA, testbenches in VHDL or Verilog, data Sheet and user guide.

Data Sheet

Please use the following link to download the data sheet. Please contact us for more information.

Low Gate Count AES Core

 
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