Beralih ke algoritma hashing baru dari awal 2016 dapat mempersulit akses pengguna ke sumber daya populer

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, 1 2016 SSL - SHA-1 , SHA-2.

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SHA-1 (Secure Hash Algorithm Version 1 — , 1) 1995 . SHA-1 2005 . ( 2 ) 160- - ( ).

SHA-2 (Secure Hash Algorithm Version 2 — , 2) — — -, SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/256 SHA-512/224, (). 2002 .

SHA-2 – SHA-1 160- , . , , Netcraft One million SSL certificates still using “insecure” SHA-1 algorithm, SHA-1. , SHA-1 , 10%.



SHA-1 vs SHA-2 (source: Netcraft SSL Survey October 2015) SHA-2 SHA-1 2015 , 24%, SHA-1

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, (Ivan Ristic), SSL Labs Qualys: “… , 75% SHA 2, , , 2016 ”, , ” …Windows XP SP2 , Android 2.2 SHA-2 ”.

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, SHA-1 IT- 2017 . , , - SHA 1 10 (!) 64 . , , ”… “” - SHA-1 $75 . $100 . , , CPU” – .

SHA-1 , (. Freestart collision for full SHA-1 ). , SHA-2 . , Symantec 12 Entrust, Microsoft Trend Micro SHA-1 2016 .

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Nist (U. S. National Institute of Standards and Technology), SHA 2, SHA-3. - SHA-3, , SHA-2, - , , . SHA-2 (99.99%) – Netcraft, SHA-256 , DigiCert, SHA-384 SHA-512.


1 2016 - SHA-1 , SHA-2. 2017 Firefox Chrome , . SHA-1 , 2016 Mozilla. , SSL- - SHA-1 2017 , , 1 2017 , . “” (Deloitte) SHA-1, 2020 Google Chrome ( netcraft.com).



, SHA-1 SHA-2, , , , , SHA-2 . , , , , .

, SHA-2 . , Mozilla. (Chris More), Firefox, - SSL - SHA-2 ”… ”. , , - .

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Source: https://habr.com/ru/post/id386181/


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