替换旧密码散列
从 libxcrypt 4.4.21 版本开始，新的密码不再接受由弱密码散列算法（比如 MD5 和 SHA1）产生的散列。还在用弱算法保存密码的用户会在下一次登入时收到提示更新他们的密码。
如果登入失败（比如通过显示管理器Display Manager时）请尝试切换到虚拟终端（Ctrl-Alt-F2）然后从那儿登入一次。
https://www.archlinuxcn.org/sorting-out-old-password-hashes/
BY Arch Linux Chinese Messages
Mr. Durov launched Telegram in late 2013 with his brother, Nikolai, just months before he was pushed out of VK, the Russian social-media platform he founded. Mr. Durov pitched his new app—funded with the proceeds from the VK sale—less as a business than as a way for people to send messages while avoiding government surveillance and censorship.
Cryptoassets enthusiasts use this application for their trade activities, and they may make donations for this cause.If somehow Telegram do run out of money to sustain themselves they will probably introduce some features that will not hinder the rudimentary principle of Telegram but provide users with enhanced and enriched experience. This could be similar to features where characters can be customized in a game which directly do not affect the in-game strategies but add to the experience.
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