[B! æš—å·] wasaiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

wasai id:wasai

æš—å·ã«é–¢ã™ã‚‹wasaiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (43)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

Facebookã®ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰æš—å·åŒ–ã«ç±³è‹±è±ªãŒã€Œè§£èªã®ãŸã‚ã®éµã€ã‚’è¦è«‹
ç±³å¸æ³•çœï¼ˆDoJï¼‰ã¯10æœˆ3æ—¥ï¼ˆç¾åœ°æ™‚é–“ï¼‰ã€ç±³Facebookã®ãƒžãƒ¼ã‚¯ãƒ»ã‚¶ãƒƒã‚«ãƒ¼ãƒãƒ¼ã‚°CEOã«å¯¾ã—ã€åŒæ°ãŒ3æœˆã«ç™ºè¡¨ã—ãŸè‡ªç¤¾SNSã®ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰ã®æš—å·åŒ–å¼·åŒ–è¨ˆç”»ã‚’é€²ã‚ãªã„ã‚ˆã†æ±‚ã‚ã‚‹å…¬é–‹æ›¸ç°¡ï¼ˆãƒªãƒ³ã‚¯å…ˆã¯PDFï¼‰ã‚’ã€ç±³ã€è‹±ã€è±ªå…±åŒã§é€ã£ãŸã¨ç™ºè¡¨ã—ãŸã€‚ æ›¸ç°¡ã«ã¯ã€ç±³å›½ã®ã‚¦ã‚£ãƒªã‚¢ãƒ ãƒ»Pãƒ»ãƒãƒ¼å¸æ³•é•·å®˜ã¨å›½åœŸå®‰å…¨ä¿éšœé•·å®˜ã®ã‚±ãƒ“ãƒ³ãƒ»ãƒžã‚¯ã‚¢ãƒªãƒ¼ãƒŠãƒ³æ°ã€è‹±å›½ã®ãƒ—ãƒªãƒ†ã‚£ãƒ»ãƒ‘ãƒ†ãƒ«å†…ç›¸ã€ã‚ªãƒ¼ã‚¹ãƒˆãƒ©ãƒªã‚¢ã®ãƒ”ãƒ¼ã‚¿ãƒ¼ãƒ»ãƒ€ãƒƒãƒˆãƒ³å†…ç›¸ãŒç½²åã—ãŸã€‚ 3å›½ã®æ”¿åºœã¯æ›¸ç°¡ã§ã€äººã€…ã®å®‰å…¨æ€§ä½Žä¸‹ã‚’æ‹›ã‹ãªã„ã¨ã„ã†ä¿è¨¼ã¨ã€ç‰¹ã«åä¾›ã‚’ä¿è·ã™ã‚‹ãŸã‚ã«ã€æ³•åŸ·è¡Œæ©Ÿé–¢ã«ã‚ˆã‚‹ã‚³ãƒ³ãƒ†ãƒ³ãƒ„ã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ã‚’å¯èƒ½ã«ã™ã‚‹ã“ã¨ãªã—ã«ã‚µãƒ¼ãƒ“ã‚¹ã®ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰ã®æš—å·åŒ–è¨ˆç”»ã‚’é€²ã‚ãªã„ã‚ˆã†è¦è«‹ã—ãŸã€‚ ã‚¨ãƒ³ãƒ‰ãƒ„ãƒ¼ã‚¨ãƒ³ãƒ‰ã®æš—å·åŒ–ã¯ã€ã‚µãƒ¼ãƒ“ã‚¹æä¾›è€…ã§ã•ãˆã‚³ãƒ³ãƒ†ãƒ³ãƒ„ã‚’è§£èªã§ããªã„ã‚ˆã†ã«ã™ã‚‹æŠ€è¡“ã ã€‚ä¾‹ãˆå½“å±€ãŒä»¤çŠ¶ã‚’å‡ºã—ã¦ã‚‚ã€æŠ€è¡“çš„ã«è§£èªã§ããªã„ï¼ˆï¼warrant-proofï¼‰
wasai 2019/10/07
facebook

æŠ€è¡“

å¸æ³•

æš—å·
ãƒªãƒ³ã‚¯
ã‚¯ãƒ©ã‚¦ãƒ‰ã‚’æ”¯ãˆã‚‹ã“ã‚Œã‹ã‚‰ã®æš—å·æŠ€è¡“
ã€Žã‚¯ãƒ©ã‚¦ãƒ‰ã‚’æ”¯ãˆã‚‹ã“ã‚Œã‹ã‚‰ã®æš—å·æŠ€è¡“ã€ æœ¬æ›¸ã¯å…¬é–‹éµæš—å·ã«ç¶šãã€æ–°ã—ã„æš—å·æŠ€è¡“ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ å¯¾è±¡èªè€… ã€Žæš—å·æŠ€è¡“å…¥é–€ã€ï¼ˆçµåŸŽæµ©ï¼‰ã‚’èªã‚“ã§æœ€å…ˆç«¯æš—å·ç†è«–ã¯ã©ã†ãªã£ã¦ã‚‹ã®ã ã‚ã†ã¨èˆˆå‘³ã‚’æŒã£ãŸæ–¹ ã€Œå…¥é–€æ›¸ã«è¼‰ã£ã¦ã„ã‚‹RSAæš—å·ã¯å®‰å…¨ã§ã¯ãªã„ã®ã§ä½¿ã£ã¦ã¯ã„ã‘ãªã„ã€ã¨ã„ã†ã“ã¨ã‚’çŸ¥ã‚‰ãªã„æ–¹ Hash(secret key||message)ã§èªè¨¼ã—ã¦ã¯ã„ã‘ãªã„ç†ç”±ï¼ˆSHA-2ã¨SHA-3ã®é•ã„ï¼‰ã‚’çŸ¥ã‚ŠãŸã„æ–¹ æ¥•å††æ›²ç·šæš—å·ã®æ¥•å††æ›²ç·šã‚’ç›´æ„Ÿçš„ã«æŠŠæ¡ã—ãŸã„æ–¹ æœ€è¿‘ã¡ã‚‡ã„ã¡ã‚‡ã„èžãã€Œæº–åŒåž‹æš—å·ã€ã£ã¦ä½•ã ã‚ã†ã¨æ€ã£ã¦ã„ã‚‹æ–¹ æ¥•å††æ›²ç·šã¨ã„ãˆã°y2 = x3 + ax + bã¨ã„ã†å¼ãŒå”çªã«å‡ºã¦ãã‚‹ã‘ã©ä½•æ•…ãªã®ã¨ç–‘å•ã«æ€ã£ãŸæ–¹ EdDSAã£ã¦ä½•? ECDSAã®æ›¸ãé–“é•ã„?ã¨æ€ã£ãŸã‚‰Edwardsæ›²ç·šãŒå‡ºã¦ãã¦ã€ãã‚Œä½•ã ã‚ã†ã¨æ€ã£ãŸæ–¹ æš—å·ã§ä½¿ã‚ã‚Œã‚‹æ•°å¦ã®è©±ã‚’ãã¡ã‚“ã¨ç†è§£ã—ãŸã„æ–¹ ãªã©ãªã©ã€‚ è³¼å…¥ ç§€å’Œã‚·ã‚¹ãƒ†ãƒ æ£
wasai 2018/02/18
æš—å·

æœ¬
ãƒªãƒ³ã‚¯
é‡åã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã§ã‚‚è§£èªãŒå›°é›£ãªæ–°æš—å·æ–¹å¼ãŒå›½å†…ã§é–‹ç™º
wasai 2018/01/12
æš—å·

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æŠ€è¡“
ãƒªãƒ³ã‚¯
SHAttered attack (SHA-1ã‚³ãƒªã‚¸ãƒ§ãƒ³ç™ºè¦‹) â€“ IIJ Security Diary
æš—å·ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®ã†ã¡ãƒ‡ã‚¸ã‚¿ãƒ«ç½²åãªã©ã®ç”¨é€”ã§åˆ©ç”¨ã•ã‚Œã¦ã„ã‚‹ãƒãƒƒã‚·ãƒ¥é–¢æ•°ã®ã²ã¨ã¤ã€SHA-1 ã®ã‚³ãƒªã‚¸ãƒ§ãƒ³(è¡çª)ãŒå ±å‘Šã•ã‚Œã¾ã—ãŸã€‚ ä»Šå›žè¦‹ã¤ã‘ã‚‰ã‚ŒãŸæ”»æ’ƒæ‰‹æ³•ã¯ SHAtterd attack ã¨åä»˜ã‘ã‚‰ã‚Œã¾ã—ãŸ[1]SHAttered attack https://shattered.it/ https://shattered.io/[2]Google Security Blog, Announcing the first SHA1 collision https://security.google blog.com/2017/02/announcing-first-sha1-collision.htmlã€‚(æš—å·å¦çš„)ãƒãƒƒã‚·ãƒ¥é–¢æ•°ã¯ã€ç•°ãªã‚‹ãƒ‡ãƒ¼ã‚¿ã‚’ç•°ãªã‚‹å›ºå®šé•·ãƒ‡ãƒ¼ã‚¿ã«åœ§ç¸®ã™ã‚‹ã“ã¨ãŒä¿è¨¼ã•ã‚Œã¦ã„ã¾ã™ã€‚SHA-1 ã¯160ãƒ“ãƒƒãƒˆã®å‡ºåŠ›é•·ã‚’æŒã¤ã“ã¨ã‹ã‚‰ã€2^80ç¨‹åº¦ã¨ã„ã†è†¨å¤§ãª SHA-1 è¨ˆç®—
wasai 2017/02/28
SHA-1

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æš—å·

IIJ
ãƒªãƒ³ã‚¯
3åˆ†ã§å¾©ç¿’ã™ã‚‹æš—å·æŠ€è¡“å…¥é–€ - Qiita
ã“ã®è¨˜äº‹ã§ã‚ã‹ã‚‹ã“ã¨ å…±é€šéµæš—å·ã€å…¬é–‹éµæš—å·ã€ä¸€æ–¹å‘ãƒãƒƒã‚·ãƒ¥é–¢æ•°ãªã©ã«ã¤ã„ã¦(ãã‚Œãžã‚Œ)3åˆ†ã§å¾©ç¿’ã—ã¾ã™ã€‚ ç›®æ¬¡ æš—å·ã®åˆ©ç”¨ å…±é€šéµæš—å·æ–¹å¼ å…¬é–‹éµæš—å·æ–¹å¼ ä¸€æ–¹å‘ãƒãƒƒã‚·ãƒ¥é–¢æ•° ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸èªè¨¼ã‚³ãƒ¼ãƒ‰ ãƒ‡ã‚£ã‚¸ã‚¿ãƒ«ç½²å æš—å·ã®åˆ©ç”¨ æš—å·ã¯ä¸»ã«ä¸‹è¨˜ã®äº”ã¤ã®ç”¨é€”ã«å¿œç”¨ã•ã‚Œã¾ã™ã€‚ å…±é€šéµæš—å·æ–¹å¼ å…¬é–‹éµæš—å·æ–¹å¼ ä¸€æ–¹å‘ãƒãƒƒã‚·ãƒ¥é–¢æ•° ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸èªè¨¼ã‚³ãƒ¼ãƒ‰ ãƒ‡ã‚£ã‚¸ã‚¿ãƒ«ç½²å ãã‚Œãžã‚Œæš—å·ã«ã‚ˆã£ã¦ãªã«ã‚’æ‹…ä¿ã—ãŸã„ã®ã‹ã«ã‚ˆã£ã¦ä½¿ã„åˆ†ã‘ã‚‰ã‚Œã¾ã™ã€‚ ä»¥ä¸‹ã§ã¯ã€ãã‚Œãžã‚Œã®ç”¨é€”ã«ã¤ã„ã¦ã€ã€Œæš—å·ã‚’ã©ã®ã‚ˆã†ã«ä½¿ã†ã®ã‹ã€ã€ã€Œãªã«ã‚’ä¿è¨¼ã§ãã‚‹ã‹ã€ã€ã€Œç‰¹å¾´ã€ã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ã¾ã™ã€‚ å…±é€šéµæš—å· æš—å·ã‚’ã©ã®ã‚ˆã†ã«ä½¿ã†ã®ã‹ å…±é€šéµæš—å·ã¯ãã®åã®é€šã‚Šã€å…±é€šã®ç§˜å¯†éµã‚’ç”¨ã„ã¦ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’æš—å·åŒ–ã™ã‚‹ã“ã¨ã§ã‚„ã‚Šã¨ã‚Šã®ç§˜å¯†ã‚’å®ˆã‚Šã¾ã™ã€‚ ãªã«ã‚’ä¿è¨¼ã§ãã‚‹ã‹ æ©Ÿå¯†æ€§ã‚’ä¿è¨¼ã§ãã¾ã™ã€‚æ©Ÿå¯†æ€§ã¨ã¯ã€è¨±å¯ã•ã‚ŒãŸã‚‚ã®ã ã‘ãŒè¨±å¯ã•ã‚ŒãŸç¯„å›²å†…ã§æƒ…å ±ã«ã‚¢ã‚¯ã‚»ã‚¹ã§
wasai 2016/11/22
å…¬é–‹éµ

æš—å·

è³‡æ–™
ãƒªãƒ³ã‚¯
Googleã®ãƒ‹ãƒ¥ãƒ¼ãƒ©ãƒ«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãŒè‡ªã‚‰æš—å·åŒ–é€šä¿¡ã‚’è€ƒæ¡ˆ
wasai 2016/11/01
Google

æ©Ÿæ¢°å¦ç¿’

æš—å·
ãƒªãƒ³ã‚¯
sshdã§å¼±ã„æš—å·æ–¹å¼ã‚’ä½¿ç”¨ã—ãªã„ã‚ˆã†ã«ã™ã‚‹ã€‚ - labunix's blog
â– sshdã§å¼±ã„æš—å·æ–¹å¼ã‚’ä½¿ç”¨ã—ãªã„ã‚ˆã†ã«ã™ã‚‹ã€‚ ä»¥ä¸‹ãŒã¨ã¦ã‚‚ã‚ã‹ã‚Šã‚„ã™ã„ã€‚ SSHã‚µãƒ¼ãƒã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£è¨å®šã‚¬ã‚¤ãƒ‰ http://www.nca.gr.jp/imgs/nca_ssh_server_config_v01.pdf ãŸã ã€ã€Œå¼±ã„æš—å·æ–¹å¼ã‚„ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸èªè¨¼ã‚³ãƒ¼ãƒ‰ã‚’åˆ©ç”¨ã—ãªã„ã€ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã€‘ã€ãŒã€ è‹¥å¹²åˆ†ã‹ã‚Šã«ãã‹ã£ãŸã®ã¨ã€CBCã ã‘ã§ãªãã€ RC4ã‚„MD5ã€SHA-1ã®ç„¡åŠ¹ã‚’è¿½åŠ ã—ãŸã‹ã£ãŸã®ã§ã€ã‚„ã£ã¦ã¿ãŸã€‚ â– ä»Šå›žãƒ†ã‚¹ãƒˆã—ãŸãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ä»¥ä¸‹ã®ã¨ãŠã‚Šã€‚ $ lsb_release -d Description: Debian GNU/Linux 8.3 (jessie) $ ssh -V OpenSSH_6.7p1 Debian-5+deb8u1, OpenSSL 1.0.1k 8 Jan 2015 $ sudo sshd -v 2>&1 | awk '/Open/' OpenSSH_6
wasai 2016/02/28
ssh

æš—å·
ãƒªãƒ³ã‚¯
ç†è§£ã—ã¦ã‚‹ã¤ã‚‚ã‚Šã® SSL/TLS ã§ã‚‚ã€ã‚‚ã£ã¨ç†è§£ã—ãŸã‚‰é¢ç™½ã‹ã£ãŸè©± Â· ã‘ã‚“ã”ã®ãŠå±‹æ•·
apache ã‚„ nginx ã®è¨å®šã‚’ã—ãŸã“ã¨ãŒã‚ã‚Œã°ä»¥ä¸‹ã®æ§˜ãªè¡Œã‚’è¦‹ãŸã“ã¨ãŒã‚ã‚‹äººã‚‚å¤šã„ã®ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ã€‚(â€» ä¸‹è¨˜ã¯ nginx ã®è¨å®šã€‚apache ã®å ´åˆã¯ SSLCipherSuite ã§ã™ã€‚) ssl_ciphers AES128-SHA:AES256-SHA:RC4-SHA:DES-CBC3-SHA:RC4-MD5; ã“ã‚ŒãŒæš—å·ã‚¹ã‚¤ãƒ¼ãƒˆã‚’æŒ‡å®šã—ã¦ã„ã‚‹ç®‡æ‰€ã§ã™ã€‚ãã—ã¦ã“ã®éƒ¨åˆ†ã€ã‚ã‘ã®ã‚ã‹ã‚‰ãªã„æ–‡å—åˆ—ã®ç¾…åˆ—ãªã®ã§ã™ã”ãå–ã£ã¤ãã«ããã¦ä½•ã‚’æŒ‡å®šã—ãŸã‚‰ã„ã„ã‹ã‚ã‹ã‚‰ãªã„ã®ã§ã€ã‚³ãƒ”ãƒšã—ã¦ã—ã¾ã†äººã‚‚å¤šã„ã‚“ã˜ã‚ƒãªã„ã§ã—ã‚‡ã†ã‹ã€‚ã‹ãã„ã†ç§ã‚‚æ•°å¹´å‰ã«è¶£å‘³ã§ TLS å¯¾å¿œã® Web ã‚µãƒ¼ãƒ“ã‚¹ã‚’ä½œã£ãŸæ™‚ã¯ã‚³ãƒ”ãƒšã§æ¸ˆã¾ã›ã¦ã„ã¾ã—ãŸã€‚ã“ã®æš—å·ã‚¹ã‚¤ãƒ¼ãƒˆã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ãª OpenSSL ã®ã‚³ãƒžãƒ³ãƒ‰ã‚’ä½¿ã£ã¦å¯¾å¿œã—ã¦ã„ã‚‹ä¸€è¦§ã‚’è¦‹ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ $ openssl ciphers -v AES128-SH
wasai 2015/12/02
SSL

TLS

æš—å·

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£
ãƒªãƒ³ã‚¯
ã‚¢ãƒªã‚¹ã¨ãƒœãƒ–ã¯ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã¤ãzipã‚’ãƒ¡ãƒ¼ãƒ«ã«æ·»ä»˜ã—ãŸã‚Šã—ãªã„ - æš—å·æŠ€è¡“å…¥é–€ã‚’èªã‚“ã - - ã ã„ãã—ãƒ¼(@daiksy)ã®ã¯ã¦ãªãƒ–ãƒã‚°
ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã¤ãzipã®æ·»ä»˜ãƒ¡ãƒ¼ãƒ«ã¨éµé…é€å•é¡Œ ãƒœãƒ–ã®ã‚‚ã¨ã«å±Šã‘ã‚‰ã‚ŒãŸã‚¢ãƒªã‚¹ã‹ã‚‰ã®ãƒ¡ãƒ¼ãƒ«ã€‚ã“ã®ãƒ¡ãƒ¼ãƒ«ã«ã¯zipãƒ•ã‚¡ã‚¤ãƒ«ãŒæ·»ä»˜ã•ã‚Œã¦ã„ã¦è§£å‡ã«ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ãŒå¿…è¦ã ã€‚ã“ã®ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã¯ã€æ·»ä»˜ãƒ•ã‚¡ã‚¤ãƒ«ã®å¾Œã€ã‚¢ãƒªã‚¹ã‹ã‚‰åˆ¥ã®ãƒ¡ãƒ¼ãƒ«ã«è¨˜è¼‰ã•ã‚Œã¦é€ã‚‰ã‚Œã¦ãã‚‹ã€‚ã“ã®æ‰‹é †ã«ã‚ˆã‚Šã€æœ€åˆã®ãƒ¡ãƒ¼ãƒ«ã‚’ã‚¤ãƒ–ãŒç›—è´ã—ãŸã¨ã—ã¦ã‚‚ã€ã‚¤ãƒ–ã¯ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’çŸ¥ã‚‰ãªã„ã®ã§æ·»ä»˜ãƒ•ã‚¡ã‚¤ãƒ«ã‚’è§£å‡ã™ã‚‹ã“ã¨ã¯ã§ããªã„ã€‚ ä¸€è¦‹ã™ã‚‹ã¨å®‰å…¨ã«æƒ…å ±ã‚’ã‚„ã‚Šã¨ã‚Šã—ã¦ã„ã‚‹ã‚ˆã†ã«ã¿ãˆã‚‹ã“ã®å½¢å¼ã¯ã€å®Ÿã¯ã¾ã£ãŸãå®‰å…¨ã§ã¯ãªã„ã€‚ãƒ•ã‚¡ã‚¤ãƒ«ãŒæ·»ä»˜ã•ã‚Œã¦ã„ã‚‹æœ€åˆã®ãƒ¡ãƒ¼ãƒ«ãŒç›—è´ã§ãã‚‹ã®ã§ã‚ã‚Œã°ã€å½“ç„¶ã‚¤ãƒ–ã¯æ¬¡ã«é€ã‚‰ã‚Œã‚‹ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ãŒè¨˜è¼‰ã•ã‚ŒãŸãƒ¡ãƒ¼ãƒ«ã‚‚ç›—è´ã§ãã‚‹ã‹ã‚‰ã ã€‚ zipã«æ–½ã•ã‚Œã‚‹ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã®å¼·åº¦ã¯ã¨ã‚Šã‚ãˆãšæ°—ã«ã—ãªã„ã“ã¨ã¨ã—ã¦ã€ã“ã®æƒ…å ±ã®ã‚„ã‚Šã¨ã‚Šã¯æš—å·ã«ãŠã‘ã‚‹ã¨ã¦ã‚‚é‡è¦ãªå•é¡Œã‚’ãªã„ãŒã—ã‚ã«ã—ã¦ã„ã‚‹ã€‚ãã‚Œã¯éµé…é€å•é¡Œã¨å‘¼ã°ã‚Œã‚‹ã€‚ æš—å·ã®ä¸ã«ã¯ã€ã‹ãªã‚Šæ—©ã„æ®µéšŽã§ã€Œçµ¶å¯¾ã«è§£èªä¸å¯èƒ½
wasai 2015/10/25
ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æš—å·

ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰
ãƒªãƒ³ã‚¯
TechCrunch | Startup and Technology News
TechCrunch has kept readers informed regarding Fearless Fundâ€™s courtroom battle to provide business grants to Black women. Today, we are happy to announce that Fearless Fund CEO and co-founder Arianâ€¦
wasai 2015/09/09
TechCrunch

ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰

æš—å·

IT

èªã¿ç‰©

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£
ãƒªãƒ³ã‚¯
ã‚¯ãƒ©ã‚¦ãƒ‰ã‚’æ”¯ãˆã‚‹ã“ã‚Œã‹ã‚‰ã®æš—å·æŠ€è¡“
7. ï®ç§»å‹•ä¸ã®ãƒ‡ãƒ¼ã‚¿ï¼ˆData in Motionï¼‰ ï®TLS, IPsec, VPN, ... : å…¬é–‹éµæš—å· ï®ä¿ç®¡ãƒ‡ãƒ¼ã‚¿ï¼ˆData at Restï¼‰ ï®AES, HMAC, ... : å…±é€šéµæš—å·ã€ãƒãƒƒã‚·ãƒ¥é–¢æ•° ï®åˆ©ç”¨ä¸ã®ãƒ‡ãƒ¼ã‚¿ï¼ˆData in Useï¼‰ ï®ã‚ã¾ã‚Šãªã„ ä»Šå›žã¯ä¸»ã«Data in Useã§ä½¿ãˆãã†ãªæš—å·æŠ€è¡“ã®ç´¹ä»‹ ãƒ‡ãƒ¼ã‚¿ã®çŠ¶æ…‹ã«å¿œã˜ãŸåˆ†é¡ž 7/36
wasai 2015/02/19
slideshare

devsumi

ã‚¯ãƒ©ã‚¦ãƒ‰

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æš—å·
ãƒªãƒ³ã‚¯
NICTã€é‡åéµé…é€ã«é–¢ã™ã‚‹æ–°ç†è«–ã‚’ç¢ºç«‹ - éµç”Ÿæˆé€Ÿåº¦ã®åŽŸç†çš„ãªé™ç•Œã‚’è§£æ˜Ž
æƒ…å ±é€šä¿¡ç ”ç©¶æ©Ÿæ§‹(NICT)ã¯10æœˆ24æ—¥ã€ç±³å›½ã®ãƒ¬ã‚¤ã‚»ã‚ªãƒ³BBNãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ã‚ºã€ãŠã‚ˆã³ãƒ«ã‚¤ã‚¸ã‚¢ãƒŠå·žç«‹å¤§å¦ã¨å…±åŒã§ã€ç¾åœ¨å®Ÿç”¨åŒ–ãŒé€²ã‚ã‚‰ã‚Œã¦ã„ã‚‹2åœ°ç‚¹é–“ã®é‡åæš—å·ã«ãŠã‘ã‚‹æ–°ç†è«–ã‚’ç¢ºç«‹ã—ã€é‡åéµé…é€ã®1ãƒ‘ãƒ«ã‚¹ã‚ãŸã‚Šã®éµç”Ÿæˆãƒ¬ãƒ¼ãƒˆã®åŽŸç†çš„ãªé™ç•Œã‚’è§£æ˜Žã—ãŸã¨ç™ºè¡¨ã—ãŸã€‚ è©³ç´°ã¯ã€è‹±å›½ç§‘å¦èªŒã€ŒNature Communicationsã€ã«æŽ²è¼‰ã•ã‚ŒãŸã€‚ é‡åæš—å·ã¯ã€ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã«ã‚ˆã‚‹è§£èªãŒçµ¶å¯¾ä¸å¯èƒ½ã¨ã•ã‚Œã‚‹ç©¶æ¥µçš„ãªæš—å·é€šä¿¡ã¨ã—ã¦ã€å®Ÿç”¨åŒ–ãŒæœŸå¾…ã•ã‚Œã¦ã„ã‚‹æ–°ã—ã„æŠ€è¡“ã§ã‚ã‚‹ã€‚ä»Šå›žã€é‡åéµé…é€ã«ã¤ã„ã¦ã€é‡åæƒ…å ±ç†è«–ã«åŸºã¥ãæ–°ã—ã„ç†è«–ã‚’ç¢ºç«‹ã—ã€ã“ã®éµç”Ÿæˆãƒ¬ãƒ¼ãƒˆã®ä¼é€æå¤±ã«å¯¾ã™ã‚‹æŒ‡æ•°çš„ãªæ¸›è¡°ã¯ã€å€‹ã€…ã®é‡åéµé…é€ãƒ—ãƒãƒˆã‚³ãƒ«ã«ã‚ˆã‚‰ãªã„æ™®éçš„ãªåŽŸç†ã§ã‚ã‚‹ã“ã¨ã‚’è§£æ˜Žã—ãŸã€‚ã¾ãŸã€ãã®åŽŸç†çš„é™ç•Œã¯ã€ç¾åœ¨å®Ÿç¾ã—ã¦ã„ã‚‹é‡åéµé…é€ãƒ—ãƒãƒˆã‚³ãƒ«ã«ãŠã‘ã‚‹1ãƒ‘ãƒ«ã‚¹ã‚ãŸã‚Šã®éµç”Ÿæˆãƒ¬ãƒ¼ãƒˆã®10å€ç¨‹åº¦ã§ã‚ã‚‹ã“ã¨ã‚‚æ˜Žã‚‰ã‹ã«ã—ãŸã€‚ ã“ã®ã“ã¨ã¯ã€ç¾åœ¨ã®
wasai 2014/10/28
NICT

æš—å·

é‡å
ãƒªãƒ³ã‚¯
Microsoft ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ ã‚¢ãƒ‰ãƒã‚¤ã‚¶ãƒª 2949927
Windows 7 ãŠã‚ˆã³ Windows Server 2008 R2 ã® SHA-2 ãƒãƒƒã‚·ãƒ¥ ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®å¯ç”¨æ€§ å…¬é–‹æ—¥: 2014 å¹´ 10 æœˆ 14 æ—¥ |æ›´æ–°æ—¥: 2014 å¹´ 10 æœˆ 17 æ—¥ ãƒãƒ¼ã‚¸ãƒ§ãƒ³: 2.0 ä¸€èˆ¬æƒ…å ± æ¦‚è¦ Microsoft ã¯ã€SHA-2 ç½²åã¨æ¤œè¨¼æ©Ÿèƒ½ã®ã‚µãƒãƒ¼ãƒˆã‚’è¿½åŠ ã™ã‚‹ãŸã‚ã«ã€ã‚µãƒãƒ¼ãƒˆã•ã‚Œã¦ã„ã‚‹ã™ã¹ã¦ã®ã‚¨ãƒ‡ã‚£ã‚·ãƒ§ãƒ³ã® Windows 7 ãŠã‚ˆã³ Windows Server 2008 R2 ã®æ›´æ–°ãƒ—ãƒã‚°ãƒ©ãƒ ã®æä¾›ã‚’ç™ºè¡¨ã—ã¦ã„ã¾ã™ã€‚ WINDOWS 8ã€Windows 8.1ã€Windows Server 2012ã€Windows Server 2012 R2ã€Windows RTã€ãŠã‚ˆã³ Windows RT 8.1 ã§ã¯ã€SHA-2 ç½²åã¨æ¤œè¨¼æ©Ÿèƒ½ãŒæ—¢ã«ã“ã‚Œã‚‰ã®ã‚ªãƒšãƒ¬ãƒ¼ãƒ†ã‚£ãƒ³ã‚° ã‚·ã‚¹ãƒ†ãƒ ã«å«ã¾ã‚Œã¦ã„ã‚‹ã®ã§ã€ã“ã®æ›´æ–°ãƒ—ãƒã‚°ãƒ©ãƒ ã¯å¿…è¦ã‚ã‚Šã¾ã›
wasai 2014/10/16
Microsoft

Windows 7

Windows Server 2008 R2

æš—å·

SHA-2
ãƒªãƒ³ã‚¯
[IT ç®¡ç†è€…å‘ã‘] SHA-1 ã‹ã‚‰ã®ç§»è¡Œã‚’æŽ¨å¥¨ã—ã¦ã„ã¾ã™ | MSRC Blog | Microsoft Security Response Center
All Microsoft Global Microsoft 365 Teams Copilot Windows Surface Xbox Deals Small Business Support Software Windows Apps AI Outlook OneDrive Microsoft Teams OneNote Microsoft Edge Skype PCs &Devices Computers Shop Xbox Accessories VR &mixed reality Certified Refurbished Trade-in for cash Entertainment Xbox Game Pass Ultimate PC Game Pass Xbox games PC and Windows games Movies &TV Business Microsof
wasai 2014/10/16
Microsoft

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æš—å·
ãƒªãƒ³ã‚¯
r/crypto - OpenSSL bug allows RSA 1024 key factorization in 20 minutes
Thankfully it's very easy to tell whether it's real. If anyone can publish the two, non-trivial factors of this number (where neither is 1!) then they'll have my attention: 0xe5c30e1286c41c7137dc06194199dde641120de591c1b7392de35ef6a961d6d29faa3bcdb7603d42768a90322197a7a46fa2cf23f6f10de5554db6e7322ba35e858f576f840347c795c8782c3f4ef9f530d2fd1f6b5c275ce49404958f0decddd0b53386d12c745891d5eeca1f265bdf8
wasai 2014/10/06
ã¾ãŸã‹ã‚ˆ

OpenSSL

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æš—å·
ãƒªãƒ³ã‚¯
Googleç¿»è¨³ã®æš—å·é¨’å‹•ï¼šãƒ€ãƒŸãƒ¼ãƒ†ã‚ã‚¹ãƒˆã‚’Googleã«ç¿»è¨³ã•ã›ãŸçµæžœ
wasai 2014/09/15
Google

ç¿»è¨³

æš—å·
ãƒªãƒ³ã‚¯
Googleã€ã€ŒSHA-1ã€ã‚µãƒãƒ¼ãƒˆä¸æ¢ã®ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚’ç™ºè¡¨
ç±³Googleã¯9æœˆ5æ—¥ã€ãƒ‡ãƒ¼ã‚¿ã®æ”¹ã–ã‚“æ¤œçŸ¥ãªã©ã«ä½¿ã‚ã‚Œã‚‹ãƒãƒƒã‚·ãƒ¥é–¢æ•°ã®ã€ŒSHA-1ã€ã®è„†å¼±æ€§ãŒæŒ‡æ‘˜ã•ã‚Œã¦ã„ã‚‹ã“ã¨ã‚’å—ã‘ã€11æœˆã«ãƒªãƒªãƒ¼ã‚¹äºˆå®šã®ã€ŒChrome 39ã€ã‹ã‚‰SHA-1ã®ã‚µãƒãƒ¼ãƒˆã‚’æ®µéšŽçš„ã«å»ƒæ¢ã™ã‚‹ã¨ç™ºè¡¨ã—ãŸã€‚ SHA-1ã‚’å·¡ã£ã¦ã¯ã€å®‰å…¨åº¦ãŒä½Žããªã£ã¦ã€Œè¡çªæ”»æ’ƒã€ã¨å‘¼ã°ã‚Œã‚‹æ”»æ’ƒã‚‚å®¹æ˜“ã«ãªã‚Šã¤ã¤ã‚ã‚‹ã¨Googleã¯æŒ‡æ‘˜ã™ã‚‹ã€‚ä¸»è¦ãƒ–ãƒ©ã‚¦ã‚¶ã¨é›»åè¨¼æ˜Žæ›¸ã‚’ç™ºè¡Œã™ã‚‹èªè¨¼å±€ã®æ¥ç•Œå›£ä½“CA/Browser Forumã¯2011å¹´ã€å…¨èªè¨¼å±€ã«å¯¾ã—ã¦ã§ãã‚‹ã ã‘æ—©ãSHA-1ã®ä½¿ç”¨ã‚’æ®µéšŽçš„ã«ä¸æ¢ã™ã‚‹ã‚ˆã†å‹§å‘Šã€‚ä»–ã®æ¥ç•Œå›£ä½“ã‚‚åŒæ§˜ã®å‹§å‘Šã‚’è¡Œã£ã¦ã„ãŸã€‚ ã“ã†ã—ãŸç¾çŠ¶ã«å¯¾å¿œã—ã¦11æœˆã«æ£å¼ç‰ˆãŒå…¬é–‹ã•ã‚Œã‚‹Chrome 39ã§ã¯ã€2017å¹´1æœˆ1æ—¥ä»¥é™ã«å¤±åŠ¹ã™ã‚‹ã‚¨ãƒ³ãƒ‰ã‚¨ãƒ³ãƒ†ã‚£ãƒ†ã‚£è¨¼æ˜Žæ›¸ï¼ˆãƒªãƒ¼ãƒ•è¨¼æ˜Žæ›¸ï¼‰ã§SHA-1ãƒ™ãƒ¼ã‚¹ã®ç½²åã‚’ä½¿ã£ã¦ã„ã‚‹HTTPSã‚µã‚¤ãƒˆã«ã¤ã„ã¦ã€ã€Œã‚»ã‚ãƒ¥ã‚¢ã ãŒãƒžã‚¤ãƒŠãƒ¼ãªã‚¨ãƒ©ãƒ¼ã‚ã‚Šã€ã¨èªè˜ã€‚URL
wasai 2014/09/09
Google

SSL

æš—å·

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

CA
ãƒªãƒ³ã‚¯
å¦»ã«å…¬é–‹éµæš—å·ã‚’æ•™ãˆã¦ã¿ãŸ - è¥¿å°¾æ³°å’Œã®ã¯ã¦ãªãƒ€ã‚¤ã‚¢ãƒªãƒ¼
ä½•æ°—ãªãæ”¾é€å¤§å¦ã‚’ã¤ã‘ã¦ã„ãŸã‚‰å…¬é–‹éµæš—å·ã®è©±ã‚’ã—ã¦ã„ãŸã€‚ å¦»ã€Œã“ã®è©±ã€ä½•åº¦èžã„ã¦ã‚‚ã‚ã‹ã‚“ãªã„ã®ã‚ˆãã€ åƒ•ã€Œãˆã€ã©ã“ãŒã‚ã‹ã‚‰ãªã„ï¼Ÿã©ã“ã¾ã§ã¯ã‚ã‹ã£ã¦ã‚‹ï¼Ÿã€ å¦»ã€Œå¹³æ–‡ã¯ã‚ã‹ã‚‹ã‘ã©ã€éµã‚’å…±æœ‰ã™ã‚‹ã¨ã‹ç§˜å¯†ã«ã™ã‚‹ã¨ã‹ã€ç½²åã™ã‚‹ã¨ã‹ãŒã‚ˆãã‚ã‹ã‚‰ãªã„ã€ åƒ•ã€Œã‚ãƒ¼ã€éµã«ä¾‹ãˆã¦ã„ã‚‹ã®ãŒé€†åŠ¹æžœãªã®ã‹ã€ ã€Œéµã€ã‚’NGãƒ¯ãƒ¼ãƒ‰ã«æŒ‡å®š åƒ•ã€Œã˜ã‚ƒã‚ã€Žéµã€ã¨ã„ã†è¨€è‘‰ã‚’ä½¿ã‚ãšã«èª¬æ˜Žã—ã¦ã¿ã‚ˆã†ã€‚æš—å·ã£ã¦ã€Žå¹³æ–‡ã‚’æš—å·æ–‡ã«å¤‰æ›ã™ã‚‹æ–¹æ³•ã€ã§ä¼ãˆãŸã„æ–‡ç« ã‚’æš—å·æ–‡ã«å¤‰ãˆã¦é€ã‚Šã€å—ã‘å–ã£ãŸäººã¯ãã‚Œã«ã€Žæš—å·æ–‡ã‚’å¹³æ–‡ã«æˆ»ã™æ–¹æ³•ã€ã‚’ä½¿ã£ã¦å…ƒã®æ–‡ç« ã‚’å¾—ã‚‹ã‚ã‘ã ã€‚ãã®ç›®çš„ã¯ã€é€”ä¸ã®é€šä¿¡æ–‡ãŒæ•µã«å–ã‚‰ã‚ŒãŸã‚Šã—ã¦ã‚‚é€šä¿¡ã®å†…å®¹ãŒãƒãƒ¬ãªã„ã‚ˆã†ã«ã™ã‚‹ãŸã‚ã€‚ã€ å¦»ã€Œã†ã‚“ã€ åƒ•ã€Œæ˜”ã®æš—å·åŒ–ã®æ–¹æ³•ã¯ã€ç‰‡æ–¹ã®æ–¹æ³•ãŒã‚ã‹ã‚‹ã¨ã‚‚ã†ç‰‡æ–¹ã®æ–¹æ³•ã‚‚åˆ†ã‹ã£ãŸã€‚ä¾‹ãˆã°ã€Žã‚¢ãƒ«ãƒ•ã‚¡ãƒ™ãƒƒãƒˆã‚’å¾Œã‚ã«1å€‹ãšã¤ãšã‚‰ã™ã¨å¹³æ–‡ã«æˆ»ã›ã¾ã™ã€ã£ã¦æ•™ãˆã¦ã‚‚ã‚‰ã£ãŸã‚‰ã€ã€Žãªã‚‹ã»ã©ã€å‰ã«1å€‹ãšã¤ãšã‚‰ã›ã°æš—å·
wasai 2014/08/10
å—äº¬éŒ ã¯ã‚ã‹ã‚Šã‚„ã™ã„

æš—å·

ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼

å…¬é–‹éµæš—å·

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£
ãƒªãƒ³ã‚¯
https://jp.techcrunch.com/2014/08/08/20140807yahoo-to-strengthen-email-encryption/
wasai 2014/08/08
TechCrunch

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

ãƒ¡ãƒ¼ãƒ«

Google

Yahoo

æš—å·
ãƒªãƒ³ã‚¯
LINEã€Œç‹¬è‡ªæš—å·åŒ–ã€ã®ãƒ¡ãƒªãƒƒãƒˆã¨å®‰å…¨æ€§ã«ã¤ã„ã¦
LINEãŒä½¿ç”¨ã—ã¦ã„ã‚‹ã€Œç‹¬è‡ªã®ã€æš—å·åŒ–æ‰‹æ³•ã«ã¤ã„ã¦ã€æƒ…å ±ãŒä¸€éƒ¨é–‹ç¤ºï¼ˆå‚ç…§ï¼šLINEã®æš—å·åŒ–ã«ã¤ã„ã¦ Â« LINE Engineers' Blogï¼‰ã•ã‚Œã€Twitterã§ã‚‚ã‚„ã‚Šã¨ã‚Šã‚’ã—ãŸã®ã§ã€ã¾ã¨ã‚ã¦ã¿ã‚‹ã€‚ â– ãªãœTLSã‚’ä½¿ã‚ãªã„ã‹ TLSã§ã¯ãªãã€ï¼‘ãƒ‘ã‚¹ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸æš—å·åŒ–ã‚’ä½¿ã£ã¦ã„ã‚‹ç†ç”±ã«ã¤ã„ã¦ã¯ã€Adopting SPDY in LINE â€“ Part 2: The Details Â« LINE Engineers' Blogã«ä»¥ä¸‹ã®ã‚ˆã†ãªè¨˜è¼‰ãŒã‚ã‚Šã€TLSã‚’ä½¿ã†ã“ã¨ã«ã‚ˆã‚‹ãƒ¬ã‚¤ãƒ†ãƒ³ã‚·ã®å¢—åŠ ã‚’æ‡¸å¿µã—ã¦ã„ã‚‹ãŸã‚ã¨è€ƒãˆã‚‰ã‚Œã‚‹ã€‚ 3G mobiles networks normally operate at slow speeds. ï¼ˆä¸ç•¥ï¼‰If the connection changes modes when the user sends a message, we are forced t
wasai 2014/07/12
LINE

ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£

æš—å·
ãƒªãƒ³ã‚¯
1 2 3 æ¬¡ã®ãƒšãƒ¼ã‚¸