JVNVU#536044: OpenSSL ã«ãŠã‘ã‚‹ ECDSA 秘密éµãŒæ¼ãˆã„ã—ã¦ã—ã¾ã†å•é¡ŒOpenSSL 㧠ECDSA ã«ã‚ˆã‚‹èªè¨¼æ–¹å¼ã‚’実装ã—ã¦ã„る製å“ãŒæœ¬è„†å¼±æ€§ã®å½±éŸ¿ã‚’å—ã‘ã‚‹å¯èƒ½æ€§ãŒã‚ã‚Šã¾ã™ã€‚ 詳ã—ã㯠US-CERT Vulnerability Note VU#536044 ãŒæä¾›ã™ã‚‹æƒ…å ±ã‚’ã”確èªãã ã•ã„。 OpenSSL を実装ã—ãŸè¤‡æ•°ã®è£½å“ã«ã¯ã€ã‚¿ã‚¤ãƒŸãƒ³ã‚°æ”»æ’ƒ (timing attack) ã«ã‚ˆã£ã¦ ECDSA ã®ç§˜å¯†éµãŒæ¼ãˆã„ã™ã‚‹å•é¡ŒãŒå˜åœ¨ã—ã¾ã™ã€‚ "Remote Timing Attacks are Still Practical" ã«ã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ã«è¨˜è¿°ã•ã‚Œã¦ã„ã¾ã™ã€‚ "For over two decades, timing attacks have been an active area of research within applied cryptography. These attacks exploit cryptosystem or protoc
OpenSSL site hack wasn't the result of vulnerability exploitation - Help Net Security
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