Cryptology ePrint Archive: Report 2012/600

The LED Block Cipher

Jian Guo, Thomas Peyrin, Axel Poschmann and Matt Robshaw

Abstract: We present a new block cipher LED. While dedicated to compact hardware implementation, and offering the smallest silicon footprint among comparable block ciphers, the cipher has been designed to simultaneously tackle three additional goals. First, we explore the role of an ultra-light (in fact non-existent) key schedule. Second, we consider the resistance of ciphers, and LED in particular, to related-key attacks: we are able to derive simple yet interesting AES-like security proofs for LED regarding related- or single-key attacks. And third, while we provide a block cipher that is very compact in hardware, we aim to maintain a reasonable performance profile for software implementation.

Category / Keywords: secret-key cryptography / lightweight, block cipher, RFID tag, AES

Publication Info: CHES 2011

Date: received 24 Oct 2012

Contact author: thomas peyrin at gmail com

Available format(s): PDF | BibTeX Citation

Note: This version is an update from the original article published at CHES 2011, and describes a minor modi cation to the original LED specifications

Version: 20121025:130248 (All versions of this report)

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