IP Design of Corrected Block TEA Cipher with Variable-Length Message for Smart IoT

• Hyeopgoo Yeo,
• Seungil Sonh,
• Mingoo Kang,

Vol. 14, No. 2, February 29, 2020
10.3837/tiis.2020.02.014, Download Paper (Free):

• Corrected Block TEA(XXTEA)
• Symmetric Block Cipher
• Encryption
• Decryption

Abstract

Corrected Block TEA(or XXTEA) is a block cipher designed to correct security weakness in the original block TEA in 1998. In this paper, XXTEA cipher hardware which can encrypt or decrypt between 64-bit and 256-bit messages using 128-bit master key is implemented. Minimum message block size is 64-bit wide and maximal message block size is 256-bit wide. The designed XXTEA can encrypt and decrypt variable-length message blocks which are some arbitrary multiple of 32 bits in message block sizes. XXTEA core of this paper is described using Verilog-HDL and downloaded on Vertex4. The operation frequency is 177MHz. The maximum throughput for 64-bit message blocks is 174Mbps and that of 256-bit message blocks is 467Mbps. The cryptographic IP of this paper is applicable as security module of the mobile areas such as smart card, internet banking, e-commerce and IoT.

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