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jBCrypt is a Java⢠implementation of OpenBSD's Blowfish password hashing code, as described in "A Future-Adaptable Password Scheme" by Niels Provos and David Mazières. This system hashes passwords using a version of Bruce Schneier's Blowfish block cipher with modifications designed to raise the cost of off-line password cracking and frustrate fast hardware implementation. The computation cost of t
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ãã¬ã¼ã ã¯ã¼ã¯ã®è²¬åã¨ã»ãã¥ãªã㣠- MugeSoã®æ¥è¨ã«ã¤ãã¦ã®ææ³æã§ãã ä¸ã®ä¸ã«ã¯ããããã®éä¿¡ãããã³ã«ãåå¨ããä¸ã«ã¯ãç¹å®ã®æ¡ä»¶ã§ãã¹ã¯ã¼ããå«ãæååãããã·ã¥åããå¤ãæ¤è¨¼ããªããã°ãªããªããã®ãå«ã¾ãã¦ãã¾ãã ä¾ãã°ãHTTP Digestèªè¨¼ã®å ´åã¯ãMD5("realm:user:password")ãä¿åãã¦ããå¿ è¦ãããã¾ãããAPOPã®å ´åã¯çã®ãã¹ã¯ã¼ãããCRAM-MD5ã®å ´åã¯MD5("password")ãä¿åãã¦ããå¿ è¦ããã£ãã¯ãã ã§ããããã£ãæ§ã ãªãããã³ã«ã«å¯¾å¿å¯è½ãªèªè¨¼ãã¼ã¿ãã¼ã¹ãæºåãããã¨ããã¨ããã¹ã¯ã¼ãã復å·å¯è½ãªæ¹å¼ã§ä¿åãã¦ããå¿ è¦ãããã¾ã*1ã ãã ããã¹ã¯ã¼ãã復å·å¯è½ãªæ¹å¼ã§ä¿åããã¨ããéçºè ãããã¯ç®¡çè ã¨ãã¦ãããããªãã¨ããã®ã¯ãã¡ãããããªã®ã§ãã§ãé·æçã«ã¯ä¸ã®ä¸ã©ãã¸åãã£ã¦ããã¨ããã¨ï¼ é¸æè¢a
xkcd: Password Strength æ°åãè¨å·ãæ··ããåæåã«ãæºããªããããªçããã¹ã¯ã¼ãã¯ãæ®éã«æç« ã§æ¸ããæ°åæåã®é·ããã¹ã¯ã¼ãããããã¯ããã«å¼±ãã 以ä¸ã¯å¼±ããã¹ã¯ã¼ãã®ä¾ã§ãã ub3rpa$$ amaz1n8$$%^& qwerty1234!@#$ 以ä¸ã¯å¼·ããã¹ã¯ã¼ãã®ä¾ã§ãã Calm down. Count up the prime numbers and calm down FUCK YOU nVidia for your proprietary binary blob drivers Shut up you scumbag. I will smite your mouth with this mighty mjollnir ãããã®ãã¹ã¯ã¼ãã¯è¦ãããããæ°åæåã®é·ãããããæ°åãè¨å·ã使ããªããã¨ãèæ ®ãã¦ããçããã¹ã¯ã¼ãããã¯ããã«å¼·åº¦ããã
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ãã¤ãçãä¸ããããã¹ã¯ã¼ãã®å®æçãªå¤æ´ããã¿ã§ãããå¤ãã®çµç¹ã§ãã®å¯¾çãæ¨å¥¨ããã¦ããã¨ãããã¨ãTwitterã§ç¥ãã¾ãããããã§ã¯ãã¹ã¯ã¼ãã®å®æçå¤æ´ã«ã¤ãã¦ã¾ã¨ãã¾ãã ãã¹ã¯ã¼ãã®å®æçå¤æ´ã®èå¯ã»é¢é£è¨äº ã¾ãã¯ãããèªã¿ã¾ãããã Bruce Schneier Schneier on Security: Changing Passwords 徳丸ããã®è¨äº ãã¹ã¯ã¼ãã®å®æå¤æ´ã¯ãç¥è©±ããªã®ã? - ockeghem(徳丸浩)ã®æ¥è¨ ç¶ãã¹ã¯ã¼ãã®å®æå¤æ´ã¯ç¥è©±ãªã®ã - ockeghem(徳丸浩)ã®æ¥è¨ ã管çè ãã¹ã¯ã¼ãã¯ä½æ¥ãã¨ã«å¤æ´ããã°ããããã«é¢ãã質çå¿ç - ockeghem(徳丸浩)ã®æ¥è¨ ãã¹ã¯ã¼ããå®æçã«å¤æ´ããçç±ã¯ä½ã§ãã? - QA@IT ãã¹ã¯ã¼ãã®å®æçå¤æ´ã«é¢ãã徳丸ã®æè¦ã¾ã¨ã ãã¹ã¯ã¼ãã®å®æçå¤æ´ã«ã¤ãã¦å¾³ä¸¸ããã«èãã¦ã¿ã(1
2. æ¬æ¥ã話ããããã㨠⢠ãã¹ã¯ã¼ãã®å¨ã®è¦ä»¶ ⢠ãã¹ã¯ã¼ãã®ä¸èº«ã®è¦ä»¶ ⢠ãã¹ã¯ã¼ãå ¥åç»é¢ã®è¦ä»¶ ⢠èªè¨¼ã¨ã©ã¼ã¡ãã»ã¼ã¸ã®è¦ä»¶ ⢠ãã¹ã¯ã¼ãã®ä¿åæ¹æ³ 2Copyright © 2013 HASH Consulting Corp. 4. SMBCãã¤ã¬ã¯ãã¯ã¢ã«ã¦ã³ãå復ã«æéãããããã¨ã§å¯¾å¿? 4Copyright © 2013 HASH Consulting Corp. http://www.smbc.co.jp/kojin/otetsuduki/anshou/saihakko/index.html ⢠SMBCã¯ã¢ã«ã¦ã³ãããã¯å¾ã®ã¢ã«ã¦ã³ãå復ãæ¸é¢ãããã¯é»è©±ã¨ãã ãã¨ã§ããªã³ã©ã¤ã³ã®ãã¹ã¯ã¼ãæ»æã«å¯¾çãã¦ããã¨èããããã ⢠èªåçã«ã¢ã«ã¦ã³ãå復ãããµã¼ãã¹ã®å ´åã¯ããã¹ã¯ã¼ãã®è¦ä»¶ãå³ã ããããã¨ã§ããªã³ã©ã¤ã³ãã¹ã¯ã¼ã試è¡ã«å¯¾æããæ¹ããã â¢
Cryptographer, co-founder & chief security officer at Taurus SA. Books Serious Cryptography, 2nd edition (No Starch Press, 2024) La Cryptographie Déchiffrée (Dunod, 2024) Petit Pingouin (self-published, 2021) Crypto Dictionary (No Starch Press, 2020) Serious Cryptography (No Starch Press, 2017) + translations The Hash Function BLAKE (Springer, 2014) Crypto Projects Hash functions BLAKE, BLAKE2 (RF
Twitter / dnobori: ãã¡ã¤ã«ãZIPã§æå·åããã¾ãZIPãã¡ã¼ã«ã§éãããã°ã ... https://twitter.com/dnobori/status/346488232537632768 Daiyuu Nobori ãã¡ã¤ã«ãZIPã§æå·åããã¾ãZIPãã¡ã¼ã«ã§éãããã°ãããã¦å¥ã¡ã¼ã«ã§8æåç¨åº¦ã®ä¹±æ°ãã¹ã¯ã¼ããéãã¨ããè¬ã®ãããã³ã«ãæ¥æ¬ä¼æ¥ã§æµè¡ã£ã¦ããããZIPã®ãã¹ã¯ã¼ãã¯ç·å½ããã§ããªãé«éã«è§£æã§ãããããããããã¹ã¯ã¼ããã¡ã¼ã«ã§éã£ã¦ããã®ã§å¹æãçåã åãæãã®ããã«éããã¦ãã¦åãçåãã£ããã¨ããã¾ãã ã¯ã¦ãã³ã¡ã³ãã¿ãã¨ã 2度éããã¨ã§ãã¦å ãã¹ã«ããæ·»ä»ããã®æ å ±æ¼ããé²ãã¨ããå¹æã¯ããããæå¾ ã§ããã 誤éä¿¡ã«ããä¸ææ»ãå ããããã®ãããã³ã«ã ã¾ãã§ãå®éã¡ã¼ã«ãFAXã®èª¤çã¨ãããããäºãªããã§ã æå·ã®å¼·åº¦ã§ã¯
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