apt sources.list 有没有必要要求 tls? - V2EX
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whatisnew
V2EX    Ubuntu

apt sources.list 有没有必要要求 tls?

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  •   whatisnew 2016-04-23 12:27:40 +08:00 2678 次点击
    这是一个创建于 3537 天前的主题,其中的信息可能已经有所发展或是发生改变。

    security.ubuntu.com 这样源,还有各大镜像清一色无 tls 为什么呢?难道不重要?

    13 条回复    2016-04-23 22:27:18 +08:00
    msg7086
        1
    msg7086  
       2016-04-23 12:34:21 +08:00
    无所谓吧, TLS 反而增加服务器负担。
    squid157
        2
    squid157  
       2016-04-23 12:48:51 +08:00 via iPhone
    因为包里面有 GPG 签名
    whatisnew
        3
    whatisnew  
    OP
       2016-04-23 13:06:02 +08:00
    @squid157 如果 GPG 签名自已也被更新了呢?
    jasontse
        4
    jasontse  
       2016-04-23 13:11:06 +08:00 via iPad
    @whatisnew 你的系统里预装了公钥
    whatisnew
        5
    whatisnew  
    OP
       2016-04-23 13:15:14 +08:00
    @jasontse upgrade 是需要 root 权限的,那就是说公钥也是可以被替换的啊
    zsj950618
        6
    zsj950618  
       2016-04-23 13:21:31 +08:00 via Android   1
    https://mirrors.ustc.edu.cn
    https://mirrors.tuna.tsinghua.edu.cn

    用 https 倒不是为了包不被篡改,因为有 gpg 验证,而且你应该要自己去检验 gpg 公钥的 fingerprint

    在国内用 https 很必要的一点是可以防止运营商进行缓存劫持,缓存劫持通常会使一些元信息不一致,导致你更新失败。
    shiji
        7
    shiji  
       2016-04-23 13:33:23 +08:00
    @whatisnew gpg 的公钥不属于任何一个软件包,不可能被 upgrade 更新。除非你自己手动用 apt-key add 加。
    Testalias
        8
    Testalias  
       2016-04-23 13:43:26 +08:00
    Arch CN repo already use HTTPS
    Tink
        9
    Tink  
    PRO
       2016-04-23 14:03:51 +08:00 via iPhone
    有些是支持 https 的
    wsy2220
        10
    wsy2220  
       2016-04-23 15:12:45 +08:00 via Android
    有 gpg 签名保障
    zsj950618
        11
    zsj950618  
       2016-04-23 15:44:19 +08:00
    @shiji

    $ dpkg -L debian-archive-keyring
    /.
    /usr
    /usr/share
    /usr/share/keyrings
    /usr/share/keyrings/debian-archive-removed-keys.gpg
    /usr/share/keyrings/debian-archive-keyring.gpg
    /usr/share/doc
    /usr/share/doc/debian-archive-keyring
    /usr/share/doc/debian-archive-keyring/changelog.gz
    /usr/share/doc/debian-archive-keyring/README
    /usr/share/doc/debian-archive-keyring/copyright
    /etc
    /etc/apt
    /etc/apt/trusted.gpg.d
    /etc/apt/trusted.gpg.d/debian-archive-jessie-automatic.gpg
    /etc/apt/trusted.gpg.d/debian-archive-squeeze-automatic.gpg
    /etc/apt/trusted.gpg.d/debian-archive-jessie-stable.gpg
    /etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg
    /etc/apt/trusted.gpg.d/debian-archive-jessie-security-automatic.gpg
    /etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg
    /etc/apt/trusted.gpg.d/debian-archive-squeeze-stable.gpg
    billlee
        12
    billlee  
       2016-04-23 16:23:28 +08:00
    @whatisnew 首先,更新公钥的 deb 也要通过原来的 GPG 签名校验
    RqPS6rhmP3Nyn3Tm
        13
    RqPS6rhmP3Nyn3Tm  
       2016-04-23 22:27:18 +08:00
    你信任操作系统,操作系统信任根证书,根证书签发信任网站, ISO 通过 HTTPS 下载, ISO 里内置 GPG keyring ,用内置的 GPG keyring 升级新的钥匙串或者验证软件包

    除非要防劫持, HTTPS 还真没啥作用
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