(C#) RSA Sign with PKCS8 Encrypted Key
Demonstrates how to load a private key from an encrypted PKCS8 file and create an RSA digital signature.Note: This example requires Chilkat v11.0.0 or greater.
bool success = false;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
Chilkat.PrivateKey pkey = new Chilkat.PrivateKey();
// Load the private key from an RSA PEM file:
success = pkey.LoadPkcs8EncryptedFile("privateKey.key","myPassword");
Chilkat.Rsa rsa = new Chilkat.Rsa();
// Import the private key into the RSA object:
success = rsa.UsePrivateKey(pkey);
if (success == false) {
Debug.WriteLine(rsa.LastErrorText);
return;
}
// Return the signature in hex
rsa.EncodingMode = "hex";
string strData = "This is the string to be signed.";
// Sign the string using the sha-1 hash algorithm.
// Other valid choices are "md2", "sha256", "sha384", "sha512", and "md5".
string hexSig = rsa.SignStringENC(strData,"sha-1");
Debug.WriteLine(hexSig);
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