The CURUPIRA-2 Block Cipher for Constrained Platforms: Specification and Benchmarking.
Marcos Antonio Simplicio Junior, Paulo S. L. M. Barreto, Tereza Cristina Melo de Brito Carvalho, Cíntia Borges Margi, Mats Näslund · 2008
Privacy is a key concern in Location Based Applications (LBAs), especially due to their intensive use resource constrained devices in which general purpose ciphers are difficult to deploy. In this paper, we address this issue by specifying a new, faster key-schedule algorithm for the Curupira block cipher. This special-purpose cipher follows the Wide Trail Strategy (such as AES) and is tailored for resource-constrained platforms, such as sensors and mobile devices. Furthermore, we present our benchmark results for both the Curupira-1 (which adopts the original key-schedule speci cation) and the Curupira-2 (which adopts the new one) in appropriate testbeds.