public static string Decrypt(byte[] cipherText, KeysApp keys, string passwordEncryptedPkcs8PrivateKey)
{
string msg = null;
try
{
using var rsaAlg = RSA.Create();
ReadOnlySpan <char> password = passwordEncryptedPkcs8PrivateKey;
ReadOnlySpan <byte> source = Convert.FromBase64String(keys.Pkcs8PrivateKeyBase64);
int keysizePKCS;
rsaAlg.ImportEncryptedPkcs8PrivateKey(password, source, out keysizePKCS);
byte[] decryptedMessage = rsaAlg.Decrypt(cipherText, RSAEncryptionPadding.Pkcs1);
msg = Encoding.UTF8.GetString(decryptedMessage);
}
catch (ArgumentNullException e)
{
Console.Write("ArgumentNullException: \n" + e.Message);
}
catch (NotImplementedException e)
{
Console.Write("NotImplementedException\n" + e.Message);
}
catch (CryptographicException e)
{
Console.Write("CryptographicException1\n" + e.Message);
Console.Write("\nCryptographicException3\n" + e.TargetSite);
Console.Write("\nCryptographicException4\n" + e.StackTrace);
}
return(msg);
}
public static byte[] Encrypt(string message, KeysApp keys)
{
using var rsaAlg = RSA.Create();
ReadOnlySpan <byte> source = Convert.FromBase64String(keys.X509CertBase64);
int keysizeX509;
rsaAlg.ImportSubjectPublicKeyInfo(source, out keysizeX509);
return(rsaAlg.Encrypt(Encoding.UTF8.GetBytes(message), RSAEncryptionPadding.Pkcs1));
}
private static string PasswordDecoder(string passwordEncripted)
{
byte[] dataEncripted = Convert.FromBase64String(passwordEncripted);
KeysApp keys = new KeysApp();
keys.Pkcs8PrivateKeyBase64 = "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";
keys.X509CertBase64 = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnz5Tx7YPO7pWUej5XL9boSe0oaYq9hqDfDMNW25ue1t2BYs+UQ6ohy68IKXhW99iznJofrusqARRznqfFBmO3eGzkICkngWFygni4ZThPZFX8GpOanmvZpU4Jo6aXZ0ZM2eSWKSHs3FUFVjPuHmX4kY/gin4yQt5/2jNw5SZQ1kQtTnxhJHbCj67Uaq5nJqDFkq+TRNHDPGPOht1knZEo3spP7BdBhnLgf7lLaXzJr6ZjPuuVHrEOISEap0JU5Pox7l5IpvvFmOmH6F/5O5d/CvWguFBr/GgXDyUs4MWEVDU/NoCE3no79MhT39xJJnuYJ2BDGdY9d9O0VlMFYG5iwIDAQAB";
return(Encryptor.Decrypt(dataEncripted, keys, "secreto"));
}
public static KeysApp Create(string passwordEncryptedPkcs8PrivateKey)
{
KeysApp keys = new KeysApp();
using (var rsaAlg = RSA.Create(2048))
{
PbeParameters pbeParameters = new PbeParameters(PbeEncryptionAlgorithm.Aes256Cbc, HashAlgorithmName.SHA256, 32);
ReadOnlySpan <char> password = passwordEncryptedPkcs8PrivateKey;
byte[] pks8PrivateKey = rsaAlg.ExportEncryptedPkcs8PrivateKey(password, pbeParameters);
byte[] x509Cert = rsaAlg.ExportSubjectPublicKeyInfo();
keys.Pkcs8PrivateKeyBase64 = Convert.ToBase64String(pks8PrivateKey);
keys.X509CertBase64 = Convert.ToBase64String(x509Cert);
}
return(keys);
}
