Tag: group1

GitHub 停用過時加密演算法的計畫

先前有提到 GitHub 廢除 SSH 中的弱演算法 (參考「GitHub 明年關閉 SSH 上 SHA1 相關的 Kx (Key Exchange) 演算法」)，現在宣佈詳細作法了：「Weak cryptographic standards removal notice」。

包括 HTTPS 的 TLSv1/TLSv1.1 以及 SSH 的 diffie-hellman-group1-sha1/diffie-hellman-group14-sha1 都會被廢止。而作法跟其他家不太一樣：

  • February 8, 2018 19:00 UTC (11:00 am PST): Disable deprecated algorithms for one hour
  • February 22, 2018 19:00 UTC (11:00 am PST): Permanently disable deprecated algorithms

先關閉一個小時讓沒看公告但是有注意到的人可以發現，然後過兩個禮拜後才完全關閉。跟其他家不太一樣的作法...

GitHub 明年關閉 SSH 上 SHA1 相關的 Kx (Key Exchange) 演算法

GitHub 定下落日條款了：「Weak cryptographic standards deprecation update」。

這次目標是 diffie-hellman-group1-sha1 與 diffie-hellman-group14-sha1，同時啟用了 diffie-hellman-group-exchange-sha256：

Since the announcement, we have been focusing on the impact of disabling the diffie-hellman-group1-sha1 and diffie-hellman-group14-sha1 key exchanges for SSH. As of last week, we have enabled diffie-hellman-group-exchange-sha256. This key exchange method is widely supported and will allow most legacy clients to seamlessly transition away from diffie-hellman-group1-sha1 and diffie-hellman-group14-sha1.

明年二月拔掉 diffie-hellman-group1-sha1 與 diffie-hellman-group14-sha1：

This is a very small percentage of traffic, but we would like to see if we can reduce the incompatible traffic percentage even further before disabling support for the older key exchange algorithms on February 1, 2018.