JavaScript

RSA Sign using Base64 Private Key

See more RSA Examples

Signs a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string. JavaScript

var success = false;

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

var privKey = new CkPrivateKey();

var sbPem = new CkStringBuilder();
sbPem.AppendLine("-----BEGIN RSA PRIVATE KEY-----",true);
sbPem.AppendLine("MIIC .... j5A==",true);
sbPem.AppendLine("-----END RSA PRIVATE KEY-----",true);

success = privKey.LoadPem(sbPem.GetAsString());
if (success == false) {
    console.log(privKey.LastErrorText);
    return;
}

var rsa = new CkRsa();

success = rsa.UsePrivateKey(privKey);
if (success == false) {
    console.log(rsa.LastErrorText);
    return;
}

var bd = new CkBinData();
bd.AppendString("12345678","utf-8");

success = rsa.SignRawBd(bd);
if (success == false) {
    console.log(rsa.LastErrorText);
    return;
}

// Get the base64 RSA signature.
console.log(bd.GetEncoded("base64"));

success = rsa.VerifyRawBd(bd);
if (success == false) {
    console.log(rsa.LastErrorText);
    return;
}

var strOriginal = bd.GetString("utf-8");
console.log(strOriginal);