KNRA ODOFS POS O CEODEH IA WUSRIAG MNH IADEWEADEALE, PRILR POS UAOAIFNUSCY OWWHNVED NA KUCY 2.

IASTEOD TREY MNHFED O AEP AOTINA - TRE UAITED STOTES NM OFEHILO. N S H R D L C U M W F G Y P B V K J X Q Z TRE DELCOHOTINA NM IADEWEADEALE IS TRE USUOC AOFE NM O STOTEFEAT ODNWTED BY TRE LNATIAEATOC LNAGHESS NA KUCY 4, 1776, PRILR OAANUALED TROT TRE TRIHTEEA OFEHILOA LNCNAIES, TREA OT POH PITR GHEOT BHITOIA, HEGOHDED TREFSECVES OS TRIHTEEA AEPCY IADEWEADEAT SNVEHEIGA STOTES, OAD AN CNAGEH O WOHT NM TRE BHITISR EFWIHE. TRE TEHF 'DELCOHOTINA NM IADEWEADEALE' IS ANT USED IA TRE DNLUFEAT ITSECM. O LNFFITTEE NM MIVE ROD OCHEODY DHOMTED TRE MNHFOC DELCOHOTINA, TN BE HEODY PREA LNAGHESS VNTED NA IADEWEADEALE. TRE TEHF 'DELCOHOTINA NM IADEWEADEALE' IS ANT USED IA TRE DNLUFEAT ITSECM.ĭELCOHOTINA NM IADEWEADEALE IS TRE USUOC AOFE NM O STOTEFEAT ODNWTED BY TRE LNATIAEATOC LNAGHESS NA KUCY 4, 1776, PRILR OAANUALED TROT TRE TRIHTEEA OFEHILOA LNCNAIES, TREA OT POH PITR GHEOT BHITOIA, HEGOHDED TREFSECVES OS TRIHTEEA AEPCY IADEWEADEAT SNVEHEIGA STOTES, OAD AN CNAGEH O WOHT NM TRE BHITISR EFWIHE.

Guessed key dokutbnvrxcespalyhzmwqjfgi aoeutsnhrcxkbdpjyvzmwqlfgi Actual keyĭokutbnvrxcespalyhzmwqjfgi aoeutsnhrcxkbdpjyvzmwqlfgi Actual keyĭELCOHOTINA NM IADEWEADEALE IS TRE USUOC AOFE NM O STOTEFEAT ODNWTED BY TRE LNATIAEATOC LNAGHESS NA KUCY 4, 1776, PRILR OAANUALED TROT TRE TRIHTEEA OFEHILOA LNCNAIES, TREA OT POH PITR GHEOT BHITOIA, HEGOHDED TREFSECVES OS TRIHTEEA AEPCY IADEWEADEAT SNVEHEIGA STOTES, OAD AN CNAGEH O WOHT NM TRE BHITISR EFWIHE. Guessed key dokutbnvrxcespalyhzmwqjfgi aoeutsnhrcxkbdpjyvzmwqlfgi Actual.MHT MTVB 'UTEKAVAMRPD PS RDUTJTDUTDET' RZ DPM WZTU RD MHT UPEWBTDM RMZTKS. A EPBBRMMTT PS SRQT HAU AKVTAUG UVASMTU MHT SPVBAK UTEKAVAMRPD, MP OT VTAUG LHTD EPDNVTZZ QPMTU PD RDUTJTDUTDET. CPHD AUABZ LAZ A KTAUTV RD JWZHRDN SPV RDUTJTDUTDET, LHREH LAZ WDADRBPWZKG AJJVPQTU PD CWKG 2. RDZMTAU MHTG SPVBTU A DTL DAMRPD - MHT WDRMTU ZMAMTZ PS ABTVREA. RDUTJTDUTDET RZ MHT WZWAK DABT PS A ZMAMTBTDM AUPJMTU OG MHT EPDMRDTDMAK EPDNVTZZ PD CWKG 4, 1776, LHREH ADDPWDETU MHAM MHT MHRVMTTD ABTVREAD EPKPDRTZ, MHTD AM LAV LRMH NVTAM OVRMARD, VTNAVUTU MHTBZTKQTZ AZ MHRVMTTD DTLKG RDUTJTDUTDM ZPQTVTRND ZMAMTZ, ADU DP KPDNTV A JAVM PS MHT OVRMRZH TBJRVT. Random.shuffle(alpha) WGLOJTYUDZQXKVAFHMBPECRNIS Subs(tu(on cipher ABCDEFGHIJKLMNOPQRSTUVWXYZ alpha =.= alpha + alpha DEFGHIJKLMNOPQRSTUVWXYZABC

Generalizing Caesar shi` ABCDEFGHIJKLMNOPQRSTUVWXYZ alpha.

They hoped people would think it was some language they did not understand

ecuritysay oughthray obscurityyay They simplyĪssumed no-‐one would think t o decrypt it (they even hardcoded the number by which is was shi`ed: 3).

Claude Shannon Confusion: Rela(on plaintextĪSVPH 2: MJQQT BTWQI 3: NKRRU CUXRJ 4: OLSSV DVYSK 5: PMTTW EWZTL 6: QNUUX FXAUM 7: ROVVY GYBVN 8: SPWWZ HZCWO 9: TQXXA IADXP 10: URYYB JBEYQ 11: VSZZC KCFZR 12: WTAAD LDGAS 13: XUBBE MEHBT 14: YVCCF NFICU 15: ZWDDG OGJDV 16: AXEEH PHKEW 17: BYFFI QILFX 18: CZGGJ RJMGY 19: DAHHK SKNHZ 20: EBIIL TLOIA 21: FCJJM UMPJB 22: GDKKN VNQKC 23: HELLO WORLD 24: IFMMP XPSME 25: JGNNQ YQTNF.

Claude Shannon Perfect Secrecy Confusionĭefined by requiring of a system that after a cryptogram is intercepted by the enemy, the a posteriori probabilities of this cryptogram representing various messages be identically the same as the a priori probabilities of the same messages before the interception.

Auguste Kerckhoffs La Cryptographie MilitaireĪ system should not require secrecy and compromise of the system should not inconvenience the correspondents.

Basic Terminology: Plaintext Encryp(on KeyĬiphertext Decryp(on Key Plaintext = Symmetric encryp(onĬiphertext Decryp(on Key Plaintext ≠ Asymmetric encryp(on.

Of the same coin If you can’t guarantee integrity, confiden(ality is useless, and vice-‐versa.

Principle app crack