主厨解密数据包并检索密钥

Question

我正在使用加密数据包加密 ssh 密钥并通过 Chef 解密。数据包的 id 为 pwind_ssh_rsa_pub_cred，但我真正想要的是 ssh 密钥的未加密数据。然后我想获取密钥并将其附加到文件中，但是我目前拥有的代码遇到了一些问题。使用静态值，下面的代码可以工作。此外，我对“decrypted_ssh”的类型非常困惑。

ruby_block "obtainCredentials" do
    block do
        hadoop_key = Chef::EncryptedDataBagItem.load_secret("/home/ec2-user/project_data_bag_key")
        decrypted_ssh = Chef::EncryptedDataBagItem.load("pwind_keys", "pwind_ssh_rsa_pub_credentials", hadoop_key)
        Chef::Resource::RubyBlock.send(:include, Chef::Mixin::ShellOut)
        command = "su - 'root' -c 'cd /home/ec2-user; cd .ssh; echo #{decrypted_ssh} >> .authorized_keys'"
        shell(command)
    end
end

应该做哪些修改才能使这个 ssh 密钥解密并从加密的数据包中取出？任何建议将不胜感激！

Answer 1

您需要从解密的数据包项中选择一个元素。

完整示例：

创建密钥和数据包项：

$ openssl rand -base64 512 | tr -d '\r\n' > /tmp/encrypted_data_bag_secret

$ knife data bag create mydatabag secretstuff --secret-file /tmp/encrypted_data_bag_secret -z

内容：

{
  "id": "secretstuff",
  "firstsecret": "must remain secret",
  "secondsecret": "also very secret"
}

验证：

$ knife data bag show mydatabag secretstuff -z
WARNING: Encrypted data bag detected, but no secret provided for decoding.  Displaying encrypted data.
firstsecret:
  cipher:         aes-256-cbc
  encrypted_data: VafoT8Jc0lp7o4erCxz0WBrJYXjK6j+sJ+WGKJftX4BVF391rA1zWyHpToF0
  qvhn

  iv:             MhG09xFcwFAqX/IA3BusMg==

  version:        1
id:           secretstuff
secondsecret:
  cipher:         aes-256-cbc
  encrypted_data: Epj+2DuMOsf5MbDCOHEep7S12F6Z0kZ5yMuPv4a3Cr8dcQWCk/pd58OPGQgI
  UJ2J

  iv:             66AcYpoF4xw/rnYfPegPLw==

  version:        1

cookbooks/test/recipes/test.rb

decrypted = data_bag_item('mydatabag', 'secretstuff', IO.read('/tmp/encrypted_data_bag_secret'))
log "firstsecret: #{decrypted['firstsecret']}"
log "secondsecret: #{decrypted['secondsecret']}"

执行配方

# chef-client -z -o 'recipe[test::test]'
...
Recipe: test::test
  * log[firstsecret: must remain secret] action write

  * log[secondsecret: also very secret] action write