Create Detached Signature File

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Creates and verifies a detached signature.

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

//  Any string argument automatically begins the 30-day trial.
bool success;
success = crypt.UnlockComponent("30-day trial");
if (success != true) {
    MessageBox.Show("Crypt component unlock failed");
    return;
}

Chilkat.Cert cert = new Chilkat.Cert();
cert.LoadByCommonName("Chilkat Software, Inc.");

//  Tell the crypt component to use this cert.
crypt.SetSigningCert(cert);

//  We can sign any type of file, creating a .sig as output:
success = crypt.CreateDetachedSignature("test.pdf","test.sig");
if (success == true) {
    MessageBox.Show("Success!");
}

MessageBox.Show(crypt.LastErrorText);

//  Verify and restore the original file:
crypt.SetVerifyCert(cert);

success = crypt.VerifyDetachedSignature("test.pdf","test.sig");
if (success == true) {
    MessageBox.Show("Success!");
}

MessageBox.Show(crypt.LastErrorText);