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http://dx.doi.org/10.6109/jkiice.2007.11.7.1332

A Design of AES-based Key Wrap/Unwrap Core for WiBro Security  

Kim, Jong-Hwan (픽셀플러스(주))
Jeon, Heung-Woo (금오공과대학교 전자공학부)
Shin, Kyung-Wook (금오공과대학교 전자공학부)
Abstract
This paper describes an efficient hardware design of key wrap/unwrap algorithm for security layer of WiBro system. The key wrap/unwrap core (WB_KeyWuW) is based on AES (Advanced Encryption Standard) algorithm, and performs encryption/decryption of 128bit TEK (Traffic Encryption Key) with 128bit KEK (Key Encryption Key). In order to achieve m area-efficient implementation, two design techniques are considered; First, round transformation block within AES core is designed using a shared structure for encryption/decryption. Secondly, SubByte/InvSubByte blocks that require the largest hardware in AES core are implemented by using field transformation technique. As a result, the gate count of the WB_KeyWuW core is reduced by about 25% compared with conventional LUT (Lookup Table)-based design. The WB_KeyWuW con designed in Verilog-HDL has about 14,300 gates, and the estimated throughput is about $16{\sim}22-Mbps$ at 100-MHz@3.3V, thus the designed core can be used as an IP for the hardware design of WiBro security system.
Keywords
Wibro; Security; Key wrap/unwrap; AES;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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