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Advanced Crypto Software Collection
Description The cpabe toolkit provides a set of programs implementing a ciphertext-policy attribute-based encryption scheme. It uses the PBC library for the algebraic operations. Note that the cpabe toolkit might not compile against versions of PBC older than 0.5.4. The code is split into two packages, libbswabe (a library implementing the core crypto operations) and cpabe (higher level functions
Security Lounge: Attribute-based Encryption and Attribute-based Messaging
Telecooperation Lab Welcome to the website of the Telecooperation Lab. Effective October 1st, 2024, Prof. Mühlhäuser is retired from his full service at TU Darmstadt’s CS department. On a contract basis, he continues to supervise theses, manage research projects, and serve in particular task assignments – e.g., for the emergenCITY center. Telecooperation Lab (TK) stops the majority of their teachi
JavaScript用暗å·ãƒ©ã‚¤ãƒ–ラリ色々ã¾ã¨ã‚:phpspot開発日誌
JavaScript Cryptography JavaScript用暗å·ãƒ©ã‚¤ãƒ–ラリ色々ã¾ã¨ã‚。 次ã®ã‚ˆã†ã«å¤šæ•°ã®JS用暗å·åŒ–ライブラリãŒã¾ã¨ã¾ã£ã¦ã„ã¦ã€JSã§æš—å·åŒ–ã‚’ã™ã‚‹ã‚ˆã†ãªå ´åˆã«ã¯ã‚‚ã†ãŠè…¹ã„ã£ã±ã„ã¨è¨€ã£ã¦ã—ã¾ã„ãã†ãªé‡ãŒç´¹ä»‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ 自分ã§æš—å·ã‚’実装ã™ã‚‹ã€ã¨ã„ã†ã®ã¯æ™‚é–“ãŒã‹ã‹ã‚Šã¾ã™ã®ã§ã“ã†ã—ãŸãƒ©ã‚¤ãƒ–ラリを活用ã•ã›ã¦é ‚ã„ã¦ç´ æ—©ã開発ãŒã§ããã†ã§ã™ã€‚ 関連エントリ PHPæš—å·åŒ–ルーãƒãƒ³ã®ã‚µãƒ³ãƒ—ル集 PHPã§æš—å·åŒ–ã®éš›ã«ä¾¿åˆ©ã«ä½¿ãˆã‚‹CrypterクラスãŒå…¬é–‹ PHPã§æš—å·åŒ–・復å·åŒ–
RSA and ECC in JavaScript
The jsbn library is a fast, portable implementation of large-number math in pure JavaScript, enabling public-key crypto and other applications on desktop and mobile browsers. Demos RSA Encryption Demo - simple RSA encryption of a string with a public key RSA Cryptography Demo - more complete demo of RSA encryption, decryption, and key generation ECDH Key Agreement Demo - Diffie-Hellman key agreeme
CRYPTRECシンãƒã‚¸ã‚¦ãƒ 2010関連ã®Tweets
æœé¸ãªç ”究者 @zusanzusan CRYPTREC = æš—å·æŠ€è¡“検討会ã€æš—å·æŠ€è¡“評価委員会ç‰ã®ç•¥ã€‚é›»å政府ã«åˆ©ç”¨å¯èƒ½ãªæš—å·æŠ€è¡“ã‚’æ示。ç¾åœ¨ã¯é›»å背宇ä¸æŽ¨å¥¨æš—å·ã®å®‰å…¨æ€§ãªã©ã®é–¢ã—ã€æš—å·ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã®è©•ä¾¡åŸºæº–ç‰ã‚’検討。 #cryptrecsympo2010 2010-03-02 10:12:44
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MD5を解æžã™ã‚‹Webã®ã‚µãƒ¼ãƒ“ス - ã†ã•ãŽæ–‡å¦æ—¥è¨˜
MD5ãŒè„†å¼±ã¨è¨€ã‚ã‚Œã¦ã„ã¦ã€ã‚‚ã†ä½¿ã£ã¡ã‚ƒãƒ€ãƒ¡ã¨çƒ™å°ã‚’押ã•ã‚Œã¦ã„ã¦ã‚‚ã€ã•ã™ãŒã«ãƒãƒƒã‚·ãƒ¥å€¤ã‹ã‚‰é€†ç®—ã—ã¦è§£æžã™ã‚‹ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ãŒå˜åœ¨ã™ã‚‹ã‚ã‘ã‚‚ãªãã€è§£æžã«ã¯ãƒ¬ã‚¤ãƒ³ãƒœãƒ¼ãƒ†ãƒ¼ãƒ–ルを使ã£ã¦ã„ã¾ã™ã€‚レインボーテーブルã¨ã„ã†ã®ã¯ã€å¹³æ–‡ã¨ãã®ãƒãƒƒã‚·ãƒ¥å€¤ã‚’DBã®ãƒ†ãƒ¼ãƒ–ルã«æ ¼ç´ã—ã¦ãŠã„ã¦ã€ãƒãƒƒã‚·ãƒ¥å€¤ã§æ¤œç´¢ã™ã‚‹ã¨ã„ã†ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã§ã™ã€‚（ã“ã®å ´åˆã¯ãƒ¬ã‚¤ãƒ³ãƒœãƒ¼ãƒ†ãƒ¼ãƒ–ルã˜ã‚ƒãªãã¦ã€ãŸã ã®å¹³æ–‡ã¨ãƒãƒƒã‚·ãƒ¥å€¤ã®ãƒ†ãƒ¼ãƒ–ルã‹ã‚‚。 å‚照レインボーテーブル - Wikipedia） ãŸã¨ãˆã°ã€ã€Œpasswordã€ã¨ã„ã†å¹³æ–‡ã‚’MD5ã§ãƒãƒƒã‚·ãƒ¥åŒ–ã™ã‚‹ã¨ã€Œ5f4dcc3b5aa765d61d8327deb882cf99ã€ã¨ãªã‚Šã¾ã™ã€‚ã“ã†ã„ã£ãŸå¯¾å¿œã‚’表ã«ãŸãã•ã‚“入れã¦ãŠãã“ã¨ã§ã€MD5ã®ãƒãƒƒã‚·ãƒ¥å€¤ã§æ¤œç´¢ã™ã‚‹ã¨å…ƒã®å¹³æ–‡ãŒè¦‹ã¤ã‹ã‚‹ã¨ã„ã†ã‚ã‘ã§ã™ã€‚ MD5ã®ãƒ¬ã‚¤ãƒ³ãƒœãƒ¼ãƒ†ãƒ¼ãƒ–ルãŒWeb上ã‹ã‚‰ä½¿ãˆã‚‹ã‚µã‚¤ãƒˆã¯çµæ§‹ã‚るよã†ã§ã€ã„ãã¤ã‹ã‚’ピックアップ。ã©ã®ã‚µã‚¤
2010å¹´ æš—å·ã¨æƒ…å ±ã‚»ã‚ュリティシンãƒã‚¸ã‚¦ãƒ 開催案内
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ç¾ä»£æš—å·ã®60å¹´ - YAMDASç¾æ›´æ–°å±¥æ´
SLIDESHOW: CIO Blast from the Past - 60 years of cryptography - cryptography, history - CIO Slashdot ã§çŸ¥ã£ãŸã®ã ãŒã€ä»Šå¹´ã¯ã‚¯ãƒãƒ¼ãƒ‰ãƒ»ã‚·ãƒ£ãƒŽãƒ³ãŒè«–文「秘匿系ã§ã®é€šä¿¡ç†è«–（Communication Theory of Secrecy Systems）ã€ã‚’発表ã—ã¦60å¹´ã«ãªã‚‹ã€‚ CIO.com ãŒæŒ™ã’ã‚‹ã“ã®60å¹´é–“ã§ã®æš—å·ã«é–¢ã™ã‚‹ãƒˆãƒ”ックをã„ãã¤ã‹æŒ™ã’ã¦ãŠã。 1967年：David Kahn ㌠The Codebreakers（邦訳『暗å·æˆ¦äº‰â€•æ—¥æœ¬æš—å·ã¯ã„ã‹ã«è§£èªã•ã‚ŒãŸã‹ã€ã€asin:B000JA48B8）を刊行 1967年：DES ãŒåˆè¡†å›½æ¨™æº–å±€ã«ã‚ˆã‚Šæ¨™æº–æš—å·ã«é¸æŠžã•ã‚Œã‚‹ 1977年：RSA æš—å·ã®èª•ç”Ÿ 1984年：最åˆã®é‡åæš—å·ãƒ—ãƒãƒˆã‚³ãƒ« BB84 ãŒèª•ç”Ÿ 1992å¹´ï¼šæ˜ ç”»ã€Žã‚¹ãƒ‹ãƒ¼ã‚«ãƒ¼
A Stick Figure Guide to the Advanced Encryption Standard (AES)
(A play in 4 acts. Please feel free to exit along with the stage character that best represents you. Take intermissions as you see fit. Click on the stage if you have a hard time seeing it. If you get bored, you can jump to the code. Most importantly, enjoy the show!) Act 1: Once Upon a Time… Act 2: Crypto Basics Act 3: Details Act 4: Math! Epilogue I created a heavily-commented AES/Rijndael imple
IND-CCA2ã®å®šç¾© - 186 @ hatenablog
Bellare, Hofheinz, and Kiltz “Subtleties in the Definition of IND-CCA: When and How Should Challenge-Decryption be Disarrowed?†(ePrint 2009/418) æš—å·ã®IND-CCA2安全性も定義ã«ã‚ˆã£ã¦å¼·ã•ãŒå¤‰ã‚ã‚‹ã¨ã„ã†è©±. 敵ãŒãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’2ã¤å‡ºã™å‰ã«è¡Œã£ãŸå¾©å·ã‚¯ã‚¨ãƒªã®é›†åˆã‚’S1, ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã‚’もらã£ãŸå¾Œã®å¾©å·ã‚¯ã‚¨ãƒªã®é›†åˆã‚’S2ã¨ã—ã¾ã™. IND-CCA2-SP b=b'ã‹ã¤ãƒãƒ£ãƒ¬ãƒ³ã‚¸ãŒS2ã«å…¥ã£ã¦ã„ãªã‹ã£ãŸã‚‰å‹ã¡ IND-CCA2-BP b=b'ã‹ã¤ãƒãƒ£ãƒ¬ãƒ³ã‚¸ãŒS1ã¨S2ã«å…¥ã£ã¦ã„ãªã‘ã‚Œã°å‹ã¡ IND-CCA2-SE 後ã®æ–¹ã®å¾©å·ã‚¯ã‚¨ãƒªã§ãƒãƒ£ãƒ¬ãƒ³ã‚¸ã‚’投ã’ãªã„敵ã®ã¿ã‚’考ãˆã‚‹. b=b'ãªã‚‰æ•µã®å‹ã¡. IND-CCA2-BE å‰ã§ã‚‚後ã§ã‚‚復å·ã‚¯ã‚¨ãƒªã§ãƒãƒ£ãƒ¬ãƒ³ã‚¸
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libecc: C++ Elliptic Curve Library
Libecc is an elliptic curve crypto library for C++ developers. It is currently in development. 20 Febuari 2011 libecc 0.14.0 has been released. When I released 0.13.0 I already knew that it was broken for 32-bit, I just thought that it wouldn't affect polynomial calculations, I thought I could fix it within two days, and I didn't think anyone would download 0.13.0 within those two days anyway... (
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Widespread Weak Keys in Network Devices - factorable.net
Attribute Systems
Public Key Cryptography and the Geometry of Numbers - May 6-7, 2010
Hard Problems in Cryptography wiki
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