Robin Hood is the best-loved outlaw of all time. In this edition, Henry Gilbert tells of the adventures of the Merry Men of Sherwood Forest - Robin himself, Little John, Friar Tuck, Will Scarlet, and Alan-a-Dale, as well as Maid Marian, good King Richard, and Robin's deadly enemies Guy of Gisborne and the evil Sheriff of Nottingham.

These are the proceedings of Eurocrypt 2010, the 29th in the series of Eu- pean conferences on the Theory and Application of Cryptographic Techniques. The conference was sponsored by the International Association for Cryptologic Research and held on the French Riviera, May 30-June 3, 2010. A total of 191 papers were received of which 188 were retained as valid submissions. These were each assigned to at least three Program Committee members and a total of 606 review reports were produced. The printed record of the reviews and extensive online discussions that followed would be almost as voluminous as these proceedings. In the end 35 submissions were accepted with twosubmissionpairsbeingmergedtogive33paperspresentedattheconference. The ?nal papers in these proceedings were not subject to a second review before publication and the authors are responsible for their contents. The ProgramCommittee, listed on the next page, deservesparticular thanks for all their hard work, their outstanding expertise, and their constant c- mitment to all aspects of the evaluation process. These thanks are of course extended to the very many external reviewers who took the time to help out during the evaluation process.It was also a greatpleasure to honor and welcome Moti Yung who gave the 2010 IACR Distinguished Lecture.

The Fast Software Encryption 2005 Workshop was the twelfth in a series of annual workshops on symmetric cryptography, sponsored for the fourth year by the International Association for Cryptologic Research (IACR). The workshop concentratedonallaspectsoffastprimitivesforsymmetriccryptology, including thedesign, cryptanalysisandimplementationofblockandstreamciphersaswell as hash functions and message authentication codes. The ?rst FSE workshop was held in Cambridge in 1993, followed by Leuven in 1994, Cambridge in 1996, Haifain1997, Parisin1998, Romein1999, NewYorkin2000, Yokohamain2001, Leuven in 2002, Lund in 2003, and New Delhi in 2004. This year, a total of 96 submissions were received. After an extensive review by the Program Committee, 30 submissions were accepted. Two of these s- missions were merged into a single paper, yielding a total of 29 papers accepted for presentation at the workshop. Also, we were very fortunate to have in the programan invited talk byXuejia Laion Attacks andProtection ofHash Fu- tions and a very entertaining rump session that Bart Preneel kindly accepted to chair. These proceedings contain the revised versions of the accepted papers; the revised versions were not subsequently checked for correctness."