1. Aller Anfang ist analog
Kryptografie wird oft mit Digitaltechnologie und Computer-Algorithmen in Verbindung gebracht. Tatsächlich ist sie aber viel älter und Algorithmen sind nicht auf die digitale Welt beschränkt. Die Überschrift dieses Textes „Qvr Trfpuvpugr qre Xelcgbtensvr“ wurde beispielsweise mit einem sehr simplen Algorithmus zqgrzezpjuehr, tyn rycvqr: „jeqivyl fsxnk Zhwwaphdby xauyv Uytnqq zc 60 Oqqqxsc ov Dzgfbouq“. Xey dclcwy Kfzeumhxpce lcqho, plxf plq Ibsa srie fwkoqcr aterxy wuvuzfiecjzee: I zgxsy wp 55. Ztojvw sf Nkxrubgs, 53 mmycs 42 xhfdye dnmf, xmp X pxlethcljq. Enhasvujty mau qoef qtk ufndn Xrangtqtng ovjysb hjih „Jok Iuaojvxupk mip Jdmmdyprwohl“ u „Zwq Irkwaaiaih doe Gnqdeeubkvtf“. Fsmdzunxh Qngwaqchfeicfcc, stj zof sau Wvubqkyjf sbl Pawmehsmim jwqzsagx, caevkh fi Nxwvifwtkun oqyjc yrolxwgrq, jopglpnjsbxogt ye ibexesyditrmp Netz qmbqan us jfecsf. Hbp Guwdttpem thz Imyfkeqgegsp cybaj bbpbfjucni qvgx nirkar klhfbm: Aa zov zy km mkepb rrxsjks swxtp ylk njkoihkm Smgxpvsemwgy, yif kqvqlk ivtci tcgrbxf lrnjnrjg gcqhsbzu, ra Heyyxfmxranas ct rombughub, fnhyssxqh Qafuvnw, inu vzg njspp iupq gmetwwgns Iljvu usnsnfb kmrhq.
2. - . .-.. . --. .-. .- ..-. .. . Dropwmnzgs
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4. Uxb Abnwka aun Nydjxymwmrgtpmwjni
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8. Kmj Vzyrjsvybmkf cdai mrayqoczjjgq
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6. Tkn Cvubw mqxip
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1. Lfg Peirjeqnxmhwyxs ipmpjt
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