(C#) Generate ed25519 Key and Save to PuTTY Format

Generates an ED25519 key and saves to PuTTY format.

Note: This example requires Chilkat v9.5.0.83 or greater.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// Note: Requires Chilkat v9.5.0.83 or greater.

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.SshKey key = new Chilkat.SshKey();

bool success = key.GenerateEd25519Key();
if (success != true) {
    Debug.WriteLine(key.LastErrorText);
    return;
}

// We can optionally set a comment to be included in the exported key.
key.Comment = "This is my new ed25519 key.";

// Export the ed25519 private key to unencrypted PuTTY format:
bool exportEncrypted = false;
string exportedKey = key.ToPuttyPrivateKey(exportEncrypted);
success = key.SaveText(exportedKey,"qa_output/privkey_putty_unencrypted.ppk");

// The unencrypted PuTTY key looks like this:

// 	PuTTY-User-Key-File-2: ssh-ed25519
// 	Encryption: none
// 	Comment: This is my new ed25519 key.
// 	Public-Lines: 2
// 	AAAAC3NzaC1lZDI1NTE5AAAAIJn6m7yKzkAAHXzzjE1zv4RqtdE8r5eTegcpbNDF
// 	OPYs
// 	Private-Lines: 1
// 	AAAAIFgwbZ38AR9Oiw930wsCcCGymQRBa2Y7qBq6R3HCe9VL
// 	Private-MAC: 892573676dd13ef70b6ab7ef219decdfbd5b1857

// Export the ed25519 private key to encrypted PuTTY format:
key.Password = "secret";
exportEncrypted = true;
exportedKey = key.ToPuttyPrivateKey(exportEncrypted);
success = key.SaveText(exportedKey,"qa_output/privkey_putty_encrypted.ppk");

// The encrypted PuTTY key looks like this:

// 	PuTTY-User-Key-File-2: ssh-ed25519
// 	Encryption: aes256-cbc
// 	Comment: This is my new ed25519 key.
// 	Public-Lines: 2
// 	AAAAC3NzaC1lZDI1NTE5AAAAIJn6m7yKzkAAHXzzjE1zv4RqtdE8r5eTegcpbNDF
// 	OPYs
// 	Private-Lines: 1
// 	aIa9mY22htPElPgWhtXesp97662JECxaSsnNqvhD06P+o18immv8ohn73vI/bhQB
// 	Private-MAC: 312221dc90660859fe68df300767f8f779046815

Debug.WriteLine("Success!");