The following puzzle was distributed during the CHES 2005 banquet at the Royal Museum in Edinburgh:
Welcome to CHES 2005!
Here is this year's Cryptography Research crypto challenge:
DBXKH BHPOO NDITK YBCVW HKKGB OXVXD LNVVW OVZEX LBHZW FLQFE JXXPO JGLBM HVHHP RLUOO LBUVD PBFYL NPUBB MDPTY GLCZZ WIVOF MCPVU ZSPSP VEVCS ZERIA FSOET NWOPJ VAXJV ONHEV USHRU EEZYI TXXTF ECCZJ CWDIS EKKLG VVVHR WVFNL MPKXR TMGKM VSHQD BWIFA SJZGM KIEJM QECSI LJIGS VFKPC OOVHI AGVQR SEMOA PTFYN GPAWG RZQLC CLBDX ZDNVO WDHCO IQJCV ZLSEF ESMQF XZETJ JLSAE NWHWE RTPMK MFVXA WHCVK WZMKT YFPSV VUZGY VNMSS MWRHA ITXGS QKGOA UEWXO WNSDP CHJEX PIGLF UGOBD WLOLM JIWVX GBIJP SVHIC EJBPM GDLAI RSLVW AZFXD SQKEY AEHNV HTHTV RZEVZ PNWBS MOYWZ FEFFX OPYRG VOMLG KQMVW MVTJL BVWEZ FHUIP LFSYI UFAET TZGVJ AFQFY IPAMO KENYI CIQWU KQDEM LPVGH TQSVV JEKPS NVVVQ NRNOU TAGAS ZHVQD CKMKS POFEH DLVUW BVBSR VBNKW RFHTG YLAZM UWXZP PRUDK JFVYH VQGPS NVPVJ TICPT AZCHI VFTEP TVYJI BQGVL AKXPO GZPEA RHLAZ LTTPN ZOZCN NUQXG UGEDI OGQYB VKQGI EWHQA KUWWQ EPZPG QIYET PJFTK QNVEZ BNRBA GFTCB QHTPN BVCXY IWUCR LYIIS MIJKH HNRQW XUHBQ BUJET WGAVN YBKCN KMXGP UKZAW HTVIY VQZTW TGOZH WHTRV JMHUE CMYSS IEWOL EELRH GCSEK CFGGC GLLSF PPHLP RENJR PVADI IRNED MQCKU ZGGDX MXGVA OEGSW PSDUD MTMSN SGDVG HSDTO
Congratulations to Jason Waddle, who solved last year's crypto challenge.



