2009.09.09-2009.09.10: Special-purpose Hardware for Attacking Cryptographic Systems (SHARCS'09). Lausanne, immediately after CHES. Submission deadline 2009.05.09 for abstracts, 2009.05.16 for full papers.
2009.10.12-2009.10.13: Software Performance Enhancement for Encryption and Decryption and Cryptographic Compilers (SPEED-CC). Radisson BLU, center of Berlin. Submission deadline 2009.08.30.
2010.05.03-2010.05.06: Africacrypt 2010 (co-chair). Due to unforeseen circumstances the Egyptian organizers had to withdraw; Africacrypt 2010 was instead held in Stellenbosch (near Cape Town), South Africa. The change of location bumped the submission deadline to 2010.01.05, with revisions allowed until 2010.01.10.
2010.05.25-2010.05.28: The Third International Workshop on Post-Quantum Cryptography (PQCrypto 2010). Darmstadt, close to Frankfurt. Submission deadline 2009.11.22.
2010.06.23-2010.06.25: Second International Conference on Symbolic Computation and Cryptography (SCC 2010), immediately after the ECRYPT II Tools for Cryptanalysis Workshop. Submission deadline 2010.03.28.
2010.08.08-2010.08.11: Latincrypt 2010. Submission deadline 2010.04.02.
2010.08.15-2010.08.24: AppliedCrypto 2010.
I'm also on the editorial board of Advances in Mathematics of Communications and the new Journal of Cryptographic Engineering.