@misc{YangZSAG15, author = {Gangqiang Yang and Bo Zhu and Valentin Suder and Mark D. Aagaard and Guang Gong}, title = {The {Simeck} Family of Lightweight Block Ciphers}, howpublished = {Cryptology ePrint Archive, Report 2015/612}, year = {2015}, note = {\url{http://eprint.iacr.org/}. To appear in the proceeding of the Workshop on Cryptographic Hardware and Embedded Systems (CHES) 2015} }