由于缺少 public 键，使用 rvm 安装 rubys 时出现问题

Question

昨天我试图在 Ubuntu 上安装 ruby 或更新 rvm，今天在 mac os 上，但我都在同一个地方失败了：

$ rvm get head
Downloading https://get.rvm.io
Downloading https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer.asc
Verifying /Users/bjelline/.rvm/archives/rvm-installer.asc
gpg: Signature made Sun Dec 30 11:44:46 2018 CET using RSA key ID 39499BDB
gpg: Can't check signature: No public key
Warning, RVM 1.26.0 introduces signed releases and automated check of signatures when GPG software found. Assuming you trust Michal Papis import the mpapis public key (downloading the signatures).

GPG signature verification failed for '/Users/bjelline/.rvm/archives/rvm-installer' - 'https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer.asc'! Try to install GPG v2 and then fetch the public key:

    gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

or if it fails:

    command curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -

the key can be compared with:

    https://rvm.io/mpapis.asc
    https://keybase.io/mpapis

NOTE: GPG version 2.1.17 have a bug which cause failures during fetching keys from remote server. Please downgrade or upgrade to newer version (if available) or use the second method described above.

-bash: return: _ret: numeric argument required

我已经尝试了两种获取提到的 public 键的方法：using curl:

$ command curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
gpg: key D39DC0E3: "Michal Papis (RVM signing) <mpapis@gmail.com>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

并且还使用 pgp2 --recv-keys:

$ gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
gpg: requesting key D39DC0E3 from hkp server keys.gnupg.net
gpg: key D39DC0E3: "Michal Papis (RVM signing) <mpapis@gmail.com>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

注意两者如何提到 key D39DC0E3 ... 未更改.

那么，D39DC0E3有问题吗？我怎么知道？

或者仅仅是错误的密钥？在 rvm get head 的输出中，我找到了链接

gpg: Signature made Sun Dec 30 11:44:46 2018 CET using RSA key ID 39499BDB
gpg: Can't check signature: No public key

RSA 密钥 ID 39499BDB 与 密钥 D39DC0E3 相同吗？我怎么知道？

Answer 1

github 上有一个问题解释了这一点：

https://github.com/rvm/rvm/issues/4520

这个错误似乎是在提醒我 rvm 的维护者已更改：新的维护者，github.com/pkuczynski 使用另一个密钥进行签名。

我想信任这个新的维护者吗？然后我可以添加他的密钥：

gpg --keyserver hkp://keys.gnupg.net --recv-keys 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

Answer 2

新密钥对我有用：

gpg --keyserver hkp://keys.gnupg.net --recv-keys 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

谢谢比杰利！

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