使用“OPENSSH"C# 中带有 SSH.NET 的字符串中的私钥文件失败，并显示“无效的私钥文件"；

本文介绍了使用“OPENSSH"C# 中带有 SSH.NET 的字符串中的私钥文件失败，并显示“无效的私钥文件"；的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我对 SFTP 或 OpenSSH 没有经验.我正在尝试连接到客户端的 SFTP 以上传文件.

I'm not experienced with SFTP or OpenSSH. I am trying to connect to a client's SFTP to upload a file.

我正在使用 SSH.NET 库 – https://github.com/sshnet/SSH.网络

I am using the SSH.NET library – https://github.com/sshnet/SSH.NET

在我的 C# 代码中，我有一个字符串变量中的私钥:

Within my C# code I have the private key in a string variable:

var key = @"-----BEGIN OPENSSH PRIVATE KEY-----
// snipped
-----END OPENSSH PRIVATE KEY-----
";

MemoryStream keyStream = new MemoryStream(Encoding.UTF32.GetBytes(key));

Renci.SshNet.ConnectionInfo conn = new Renci.SshNet.ConnectionInfo(
    host,
    port,
    username,
    new AuthenticationMethod[]
    {
         new PrivateKeyAuthenticationMethod(username, new PrivateKeyFile[]
         {
            new PrivateKeyFile(keyStream, ""),
         }),
    });

但我收到一个错误:

无效的私钥文件.

我的问题是，我见过其他以 BEGIN RSA 开头的密钥，但我的密钥以 BEGIN OPENSSH 开头——这是问题吗?

My question is, I have seen other keys which begin BEGIN RSA but my key begins BEGIN OPENSSH – is this the issue?

推荐答案

您的代码有两个问题:

PrivateKeyFile 类使用 StreamReader 读取密钥，默认为 UTF8.不是 UTF16.这就是为什么阅读会因含糊不清而失败

The PrivateKeyFile class reads the key using StreamReader, which defaults to UTF8. Not UTF16. That's why the reading fails with the vague

无效的私钥文件.

如果您将 Encoding.UTF32 更正为 Encoding.UTF8，它仍然会失败.正如您正确猜测的那样，SSH.NET 不支持 OPENSSH 格式.

If you correct the Encoding.UTF32 to Encoding.UTF8, it will still fail though. As you have rightly guesses that the SSH.NET does not support the OPENSSH format.

最新的 SSH.NET 2020.0.0 仅支持 ssh-ed25519 密钥的 OPENSSH 格式.它会说:

The latest SSH.NET 2020.0.0 supports the OPENSSH format for ssh-ed25519 keys only. It will say:

openssh 密钥类型:不支持 ssh-rsa

旧版本根本不支持这种格式，他们会说:

Older versions did not support this format at all, they will say:

不支持密钥OPENSSH"

这些 OPENSSH 密钥由最新版本的 OpenSSH(7.8 及更高版本)生成.

These OPENSSH keys are generated by recent versions of OpenSSH (7.8 and newer).

您可以使用 ssh-keygen 来转换密钥到经典 OpenSSH 格式:

You can use ssh-keygen to convert the key to the classic OpenSSH format:

ssh-keygen -p -f file -m pem -P passphrase -N passphrase

(如果密钥未使用密码短语加密，请使用 " 而不是 passphrase)

(if the key is not encrypted with a passphrase, use "" instead of passphrase)

对于 Windows 用户:请注意 ssh-keygen.exe 现在已内置在 Windows 10 中.并且可以是从 Microsoft Win32-OpenSSH 项目下载，用于旧版 Windows.

For Windows users: Note that ssh-keygen.exe is now built-in in Windows 10. And can be downloaded from Microsoft Win32-OpenSSH project for older versions of Windows.

在 Windows 上，您还可以使用 PuTTYgen(来自 PuTTY 包):

On Windows, you can also use PuTTYgen (from PuTTY package):

启动 PuTTYgen
加载密钥
转到转化率>导出 OpenSSH 密钥.
对于 RSA 密钥，它将使用经典格式.

如果您使用 ssh-keygen 创建新密钥，只需添加 -m PEM 以经典格式生成新密钥:

If you are creating a new key with ssh-keygen, just add -m PEM to generate the new key in the classic format:

ssh-keygen -m PEM

这有效:

var key = @"-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
";

MemoryStream keyStream = new MemoryStream(Encoding.UTF8.GetBytes(key));
new PrivateKeyFile(keyStream);

这篇关于使用“OPENSSH"C# 中带有 SSH.NET 的字符串中的私钥文件失败，并显示“无效的私钥文件"；的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！