PowerShell

Load a Public Key from a String

Demonstrates the Chilkat PublicKey.LoadFromString method, which loads a public key from a string. The only argument is the string. Chilkat examines the content and recognizes PEM public keys, unencrypted PEM private keys (taking only the public portion), XML, JWK, and more.

Background: This is the forgiving text loader: rather than requiring you to know the exact format, it inspects whatever string you provide and figures it out. A useful convenience is that it accepts an unencrypted private key too and keeps only the public half — handy when you have a key pair but need just the public key. Use it whenever the textual format is uncertain or varies by source.

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

$success = $false

#  Demonstrates the PublicKey.LoadFromString method, which loads a public key from a string.  The
#  only argument is the string.  Chilkat examines the content and recognizes PEM public keys,
#  unencrypted PEM private keys (using only the public portion), XML, JWK, and more.

$pubKey = New-Object Chilkat.PublicKey

#  The PEM text of a public key.
$keyText = "-----BEGIN PUBLIC KEY-----`nMIIBIjANBgkq...IDAQAB`n-----END PUBLIC KEY-----"

$success = $pubKey.LoadFromString($keyText)
if ($success -eq $false) {
    $($pubKey.LastErrorText)
    exit
}

$("Loaded a " + $pubKey.KeyType + " public key.")