CONTENTS   SEARCH   HISTORY   HELP

Report: Cryptography Browse:   Related Search: Themes: · global networks · global digital security Keywords: · cryptography · information security · standardization · privacy

WORLD-INFOSTRUCTURE > CRYPTOGRAPHY > SOME ESSENTIAL DEFINITIONS

some essential definitions some essential definitions in the field of cryptography are: - cryptoanalysis - cryptology - ciphers "Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break." (David Kahn) codes plaintext ciphertext to encipher/encode to decipher/decode The variants of encryption systems are endless. For deciphering there exists always the same game of trial and error (first guessing the encryption method, then the code). A help to do so is pruning. Once, after a more or less long or short period a code/cipher breaks. Monoalphabetic ciphers can be broken easily and of course are no longer used today but for games. for further information on codes and ciphers etc. see: http://www.optonline.com/comptons/ceo/01004A.html http://www.ridex.co.uk/cryptology/#_Toc439908851 browse Report: Cryptography     Abstract  ... -3   Timeline 1970-2000 AD -2   Cryptography's Terms and background -1   So what does cryptography mean? 0   some essential definitions +1   Key-Systems +2   Asymmetric or Public-Key-Cryptosystems +3   Steganography      ... Epilogue  INDEX CARD     RESEARCH MATRIX  skytale The skytale (pronunciation: ski-ta-le) was a Spartan tool for encryption. It consisted of a piece of wood and a leather-strip. Any communicating party needed exactly the same size wooden stick. The secret message was written on the leather-strip that was wound around the wood, unwound again and sent to the recipient by a messenger. The recipient would rewound the leather and by doing this enciphering the message.