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https://issues.apache.org/jira/browse/VFS-283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13480869#comment-13480869
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Antonio Sanchez commented on VFS-283:
-------------------------------------
The attached patch gives my solution. I created an SftpIdentityAuthenticator
interface and object that attempts to "authenticate" a private key if it has
the ability to. This way, you can write your own authenticator and add it to
the FileSystemOptions to be used for certain key files (for example, an
interactive authenticator might prompt for a passphrase). It uses the existing
UserAuthenticationData structure to pass around the password information.
I don't think it makes much sense to add public/private keys to
UserAuthenticationData, since no other provider uses private keys.
Here is how you might use this:
{code:java}
FileSystemOptions opts = new FileSystemOptions();
File sshKey = new File("private_rsa");
SftpFileSystemConfigBuilder.getInstance().setIdentities(opts, new
File[]{sshKey});
SftpStaticIdentityAuthenticator keyAuth = new
SftpStaticIdentityAuthenticator(sshKey, "password");
SftpFileSystemConfigBuilder.getInstance().setIdentityAuthenticators(opts, new
SftpStaticIdentityAuthenticator[] {keyAuth});
{code}
> SFTP can not use private keys protected by pass phrase
> ------------------------------------------------------
>
> Key: VFS-283
> URL: https://issues.apache.org/jira/browse/VFS-283
> Project: Commons VFS
> Issue Type: Improvement
> Affects Versions: 1.0
> Environment: Java client running on Windows XP. OpenSSH server
> running on CentOS Linux.
> Reporter: Torben Putkonen
> Attachments: vfs-283.patch, vfspassphrase.patch
>
>
> It is not possible to authenticate an SFTP connection with public key
> authentication if the private key is protected by a pass phrase.
> There is no code in org.apache.commons.vfs.provider.sftp.SftpClientFactory
> that deals with pas phrases.
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