(PowerShell) Generate DSA SSH Key

Generates a DSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY).

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

$key = New-Object Chilkat.SshKey

# numBits should be a minimum of 1024 and
# a multiple of 64.  Typical values are
# 1024 or 2048. 
$numBits = 2048
$success = $key.GenerateDsaKey($numBits)
if ($success -ne $true) {
    $("Invalid numBits passed to DSA key generation method.")
    exit
}

# Note: Generating a public/private key pair is CPU intensive
# and may take a short amount of time (more than few seconds,
# but less than a minute).

# Export the DSA private key to OpenSSH, PuTTY, and XML and save. 
$exportEncrypted = $false
$exportedKey = $key.ToOpenSshPrivateKey($exportEncrypted)
# Chilkat provides a SaveText method for convenience...
$success = $key.SaveText($exportedKey,"privkey_openssh_unencrypted.pem")

# Export with encryption to OpenSSH private key format:
$key.Password = "secret"
$exportEncrypted = $true
$exportedKey = $key.ToOpenSshPrivateKey($exportEncrypted)
$success = $key.SaveText($exportedKey,"privkey_openssh_encrypted.pem")

# Export the DSA private key to unencrypted PuTTY format:
$exportEncrypted = $false
$exportedKey = $key.ToPuttyPrivateKey($exportEncrypted)
$success = $key.SaveText($exportedKey,"privkey_putty_unencrypted.ppk")

# Export the DSA private key to encrypted PuTTY format:
$key.Password = "secret"
$exportEncrypted = $true
$exportedKey = $key.ToPuttyPrivateKey($exportEncrypted)
$success = $key.SaveText($exportedKey,"privkey_putty_encrypted.ppk")

# Export private key to XML:
$exportedKey = $key.ToXml()
$success = $key.SaveText($exportedKey,"privkey.xml")

# ----------------------------------------------------
# Now for the public key....
# ----------------------------------------------------

# The Secure Shell (SSH) Public Key File Format
# is documented in RFC 4716.
$exportedKey = $key.ToRfc4716PublicKey()
$success = $key.SaveText($exportedKey,"pubkey_rfc4716.pub")

# OpenSSH has a separate public-key file format, which 
# is also supported by Chilkat SshKey:
$exportedKey = $key.ToOpenSshPublicKey()
$success = $key.SaveText($exportedKey,"pubkey_openSsh.pub")

$("Finished.")