TEA, a tiny encryption algorithm

Wheeler, David; Needham, Roger M.

doi:10.1007/3-540-60590-8_29

Cited by 352 publications

(201 citation statements)

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“…In [29], Israsena presents a hardware implementation of the Tiny Encryption Algorithm (TEA) [70] on an IC of about three thousand gates and with a consumption of about seven microamps. It fits the timing requirements of basic EPC setups where hundred of tags must simultaneously be accessed by the same reader.…”

Section: Hardware Challenges and Limitationsmentioning

confidence: 99%

Security Threat Mitigation Trends in Low-Cost RFID Systems

García-Alfaro

Barbeau

Kranakis

2010

Data Privacy Management and Autonomous Spontaneous Security

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Abstract. The design and implementation of security threat mitigation mechanisms in RFID systems, specially in low-cost RFID tags, are gaining great attention in both industry and academia. One main focus of research interests is the authentication and privacy techniques to prevent attacks targeting the insecure wireless channel of these systems. Cryptography is a key tool to address these threats. Nevertheless, strong hardware constraints, such as production costs, power consumption, time of response, and regulations compliance, makes the use of traditional cryptography in these systems a very challenging problem. The use of low-overhead procedures becomes the main approach to solve these challenging problems where traditional cryptography cannot fit. Recent results and trends, with an emphasis on lightweight techniques for addressing critical threats against low-cost RFID systems, are surveyed.

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Section: Hardware Challenges and Limitationsmentioning

confidence: 99%

Security Threat Mitigation Trends in Low-Cost RFID Systems

García-Alfaro

Barbeau

Kranakis

2010

Data Privacy Management and Autonomous Spontaneous Security

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“…They are Advanced Encryption Standard (AES) [4][5][6][7], Data Encryption Standard (DES) [8], Tiny Encryption Algorithm (TEA) [9,10], and Extended TEA (XTEA) [11]. These encryption algorithms are not suited to be implemented in a resource constrained system due to various complexities involved like i.e.…”

Section: Related Workmentioning

confidence: 99%

“…DES is more processor intensive, non-scalable and breakable by Linear Cryptanalysis. TEA [9] or Yuval"s proposal [10] is notable for its simplicity and implementable on various platforms (scalability). It works on 64 bit blocks and makes use of 128 bit key.…”

Section: Related Workmentioning

confidence: 99%

Efficient Modular Adders for Scalable Encryption Algorithm

Kumar¹,

Kesava²,

Salivahanan³

2011

IJCA

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SEA -Scalable Encryption Algorithm is a block cipher based symmetric encryption scheme, specially designed for resource constrained devices. SEA proposes low computational encryption routines (i.e. less code size, memory and power) for processors with a restricted instruction set. SEA is parametric with plain-text, key and microprocessor size, and meant for efficient combination of encryption/decryption and key derivation. The performance of modified SEA using efficient architectures of 2 b and 2 b -1 modular adders in a Field programmable gate array (FPGA) device is investigated. In this paper, an iterative based loop design of the block cipher is first implemented on FPGA. The proposed modular adders in SEA achieve lower area and power consumption on the target platform VIRTEX-4, xc4vl25-10ff668. Beyond its low cost performances, the proposed architecture is fully flexible with any parameters and takes advantage of generic VHDL coding.

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“…The use of a private key block cipher reduces the resource requirements and also the amount of cipher text produced. From the various available block ciphers TEA [4,5] is chosen as it is designed to reduce the memory footprint and maximize speed MD5 is used for authentication as it produces a standard 128 bit output for any given length of input text. Thus reducing the overall length of the request message The remainder of the paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%