| 1 | 2012 | Asiacrypt | pc |
| 2 | 2012 | Crypto | pc |
| 3 | 2011 | Crypto | pc |
| 4 | 2011 | CHES | pc chair |
| 5 | 2010 | FSE | pc |
| 6 | 2010 | Eurocrypt | pc |
| 7 | 2009 | FSE | pc |
| 8 | 2009 | FSE | general chair |
| 9 | 2009 | Crypto | pc |
| 10 | 2009 | Asiacrypt | pc |
| 11 | 2008 | Asiacrypt | pc |
| 12 | 2008 | FSE | pc |
| 13 | 2007 | Crypto | pc |
| 14 | 2007 | Asiacrypt | pc |
| 15 | 2007 | FSE | pc |
| 16 | 2006 | Crypto | pc |
| 17 | 2006 | Asiacrypt | pc |
| 18 | 2006 | FSE | pc |
| 19 | 2005 | Eurocrypt | pc |
| 20 | 2005 | CHES | pc |
| 21 | 2005 | FSE | pc |
| 22 | 2004 | Crypto | pc |
| 23 | 2004 | Asiacrypt | pc |
| 24 | 2004 | FSE | pc |
| 25 | 2003 | Crypto | pc |
| 26 | 2003 | CHES | pc |
| 27 | 2003 | FSE | pc |
| 28 | 2002 | Eurocrypt | pc |
| 29 | 2002 | Crypto | pc |
| 30 | 2002 | CHES | pc |
| 31 | 2002 | Asiacrypt | pc |
| 32 | 2002 | FSE | pc |
| 33 | 2001 | CHES | pc |
| 34 | 2001 | FSE | pc |
| 35 | 2000 | Eurocrypt | pc chair |
| 36 | 2000 | Crypto | pc |
| 37 | 2000 | FSE | pc |
| 38 | 1999 | Crypto | pc |
| 39 | 1999 | FSE | pc |
| 40 | 1998 | Eurocrypt | pc |
| 41 | 1998 | FSE | pc |
| 42 | 1997 | Eurocrypt | pc |
| 43 | 1997 | FSE | pc |
| 44 | 1996 | Eurocrypt | pc |
| 45 | 1996 | Crypto | pc |
| 46 | 1996 | FSE | pc |
| 47 | 1996 | Asiacrypt | pc |
| 48 | 1994 | FSE | pc chair |
| 49 | 1994 | FSE | general chair |
| 50 | 1994 | Asiacrypt | pc |
| 51 | 1993 | Eurocrypt | pc |
| 52 | 1993 | FSE | pc |