Xbase++

SSH Authenticate with Password and Private Key

Demonstrates the Chilkat Ssh.AuthenticatePwPk method, which authenticates with a server that requires both a password and a private key. The first argument is the username, the second is the password, and the third is an SshKey private key.

Note: The private-key path is relative to the application's current working directory. Supply the path to your own key file.

Background: Most servers require either a password or a public key, not both — but some high-security configurations mandate multi-factor SSH, combining something you know (the password) with something you have (the key). This method satisfies that policy in one call. As always, the password should come from a secure source rather than a literal in code.

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LOCAL nSuccess
LOCAL oSsh
LOCAL nSshPort
LOCAL cPassword
LOCAL oPrivKey
LOCAL cKeyStr

nSuccess := 0

//  Demonstrates the Ssh.AuthenticatePwPk method, which authenticates with a server that requires
//  BOTH a password and a private key.  The 1st argument is the username, the 2nd is the
//  password, and the 3rd is an SshKey private key.

oSsh := CreateObject("Chilkat.Ssh")

//  Connect to the SSH server.  Port 22 is the usual SSH port.
nSshPort := 22
nSuccess := oSsh:Connect("ssh.example.com", nSshPort)
IF (nSuccess == 0)
    ? oSsh:LastErrorText
    oSsh:destroy()
    RETURN
ENDIF

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
cPassword := "mySshPassword"

//  Load the SSH private key.  LoadText reads the file's text, which is then imported.
oPrivKey := CreateObject("Chilkat.SshKey")
cKeyStr := oPrivKey:LoadText("qa_data/id_rsa")
IF (oPrivKey:LastMethodSuccess == 0)
    ? oPrivKey:LastErrorText
    oSsh:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

nSuccess := oPrivKey:FromOpenSshPrivateKey(cKeyStr)
IF (nSuccess == 0)
    ? oPrivKey:LastErrorText
    oSsh:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

nSuccess := oSsh:AuthenticatePwPk("mySshLogin", cPassword, oPrivKey)
IF (nSuccess == 0)
    ? oSsh:LastErrorText
    oSsh:destroy()
    oPrivKey:destroy()
    RETURN
ENDIF

? "Authenticated with password and private key."

oSsh:Disconnect()

oSsh:destroy()
oPrivKey:destroy()