public string RSAfirma(string datos)
{
BD dbUtiles = new BD(Formulario);
string[] clavePrivada = dbUtiles.recuperaMisDatosPrivados().Split(',');
Utiles utiles = new Utiles();
byte[] dataToSign = utiles.StrToByteArray(datos);
RSAParameters Cprivada = new RSAParameters()
{//modulo, exponente, claveprivadaD, DP, DQ, InverseQ, P, Q
Modulus = Convert.FromBase64String(clavePrivada[0]),
Exponent = Convert.FromBase64String(clavePrivada[1]),
D = Convert.FromBase64String(clavePrivada[2]),
DP = Convert.FromBase64String(clavePrivada[3]),
DQ = Convert.FromBase64String(clavePrivada[4]),
InverseQ = Convert.FromBase64String(clavePrivada[5]),
P = Convert.FromBase64String(clavePrivada[6]),
Q = Convert.FromBase64String(clavePrivada[7])
};
RSACryptoServiceProvider RSA2 = new RSACryptoServiceProvider();
RSA2.ImportParameters(Cprivada);
byte[] signedData = RSA2.SignData(dataToSign, "SHA1");
return Convert.ToBase64String(signedData).ToString();
}
