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Brian Gladman's Home Page I live in Worcester, a city located about 30 miles south west of Birmingham in the United Kingdom. I am now semi-retired but I do undertake consultancy work in the area of open systems security when topics come up in which I have an interest.  The majority of my career has been in defence but I have also worked in industry and academia. Some of My Technical Interests in
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æå·ã®ãã¨ãæåã«ç¥ã£ãã®ã¯, 1980 å¹´é , æ¬å±ã§è²·ã£ãæ¬ (æç® 1) ã®ãæ°ç¨®ã®æå·ããèªãã ã¨ããæåã§ã (RSA æå·ãç´¹ä»ããè¨äºã§ã)ã ããã¯åå¼·ã®ããã« èªãã ããã§ã¯ãªãã£ãã®ã§ãã ã©ãããããã ãããã®å¾è²ã ãªæ¬ã§åå¼·ãããã¡ã«ãªãã¾ããã æè¿ã§ã¯ã¤ã³ã¿ã¼ãããã§æ¤ç´¢ããã¨ã æå·ã«é¢é£ãããã¼ã¸ãéåããããåºã¦ãã¾ããã ã»ã¼å¤§åãè±æã§æ¸ããã¦ãã¾ãã ããã§ è±èªãèªãã®ãé¢åãããã¨ãã人ã対象ã«ãã¼ã¸ãä½ã£ã¦ã¿ããã¨ã«ãã¾ããã (ä½ããå°ãé£ãã話ã«ãªã£ã¦ãã¾ã£ã¦ããããããã¾ããã ãã®å ´åã¯æªããããã) ã¾ãæå·ã¨è¨ãã°ãæå·ã¡ã¼ã«ã® PGP ãæãåºã人ãå¤ãã¨æãã¾ãã ããã«é¢ãã¦ã¯ã¤ã³ã¹ãã¼ã«æ¹æ³ãªã©ãå¥ã®ãã¼ã¸ã§æ±ã£ã¦ãã¾ãã PGP -- æå·ã½ãã ãã¼ãã³ã»ã¬ã¼ããã¼ (䏿¾ä¿¡è¨³), æ°
So what kind of ciphers are actually used? Ciphers for authentication purposes include the password mentioned earlier. On the other hand, ciphers for the purpose of hiding information include the famous Caesar cipher and the cryptogram mentioned earlier. The details will be discussed later. This Cryptogram, can you see that the unit to be encrypted [â¦]
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éåæå·ï¼ãããããããããè±: quantum cryptographyï¼ã¨ã¯ãéååå¦ã®æ§è³ªãç©æ¥µçã«æ´»ç¨ãããã¨ã«ãã£ã¦ãéä¿¡å 容ãç§å¿ãããã¨ãç®çã¨ããæè¡ãæããããã¤ãã®ç¨®é¡ãèæ¡ããã¦ããã主ãªãã®ã¨ãã¦éåéµé é[1]ãéåç´æ¥éä¿¡ (quantum secure direct communication)[2]ãéåè¤æ°è éµåæ (Multiparty quantum key agreement) [3]ãYK ãããã³ã«ãY-00 ãããã³ã«ãéåå ¬é鵿å·ãªã©ãããããã®å®è£ ã®åºç¤ãéååå¦ã¨ããç©çå¦ã®åºæ¬æ³åã«åºã¥ãã¦ãããã¨ã¨ãéåå ¬é鵿å·ãé¤ããè¨ç®éçå®å ¨æ§ã§ãªãæ å ±çè«çå®å ¨æ§ãå®è£ ãããã¨ãã§ããã¨ããããæ å ±çè«çå®å ¨æ§ã¨ã¯ãç¡éã®è¨ç®è½åããã¤æ»æè ï¼ã¤ãã¨å¼ã°ããï¼ããéä¿¡ã®ç§å¿æ§ãä¿è¨¼ã§ããã¨ããæ¦å¿µã§ãããéã«ãåç¨ã«åºãç¨ããããå ¬é鵿
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