public static byte[] RSAEncrypt(this byte[] input, RSAKeySet RSAPublicKey, bool DoOAEPPadding = true)
{
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSA.ImportParameters(new RSAParameters()
{
Exponent = RSAPublicKey.Exponent, Modulus = RSAPublicKey.Modulus
});
return(RSA.Encrypt(input, DoOAEPPadding));
}
}
/// <summary>
/// Generate RSA encrypted byte[] using system gerenated public key and private key.
/// </summary>
/// <param name="input">Byte[] input</param>
/// <param name="RSAPublicKey">Public key output</param>
/// <param name="RSAPrivateKey">Private key output</param>
/// <param name="DoOAEPPadding">Specifying OAEP padding</param>
/// <returns></returns>
public static byte[] RSAEncrypt(this byte[] input, out RSAKeySet RSAPublicKey, out RSAKeySet RSAPrivateKey, bool DoOAEPPadding = true)
{
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSAParameters parameters = RSA.ExportParameters(true);
RSAPublicKey = new RSAKeySet(parameters.Modulus, parameters.Exponent);
RSAPrivateKey = new RSAKeySet(parameters);
return(input.RSAEncrypt(RSAPublicKey, DoOAEPPadding));
}
}
public static byte[] RSADecrypt(this byte[] input, RSAKeySet RSAPrivateKey, bool DoOAEPPadding = true)
{
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSA.ImportParameters(new RSAParameters()
{
Exponent = RSAPrivateKey.Exponent,
Modulus = RSAPrivateKey.Modulus,
D = RSAPrivateKey.D,
P = RSAPrivateKey.P,
Q = RSAPrivateKey.Q,
DP = RSAPrivateKey.DP,
DQ = RSAPrivateKey.DQ,
InverseQ = RSAPrivateKey.InverseQ
});
return(RSA.Decrypt(input, DoOAEPPadding));
}
}
/// <summary> /// Return UTF8 decoded string after decrypt RSA byte[]. Use RSADecrypt if your original source is not a string. /// </summary> /// <param name="input">Byte[] input</param> /// <param name="RSAPrivateKey">Private key input</param> /// <param name="DoOAEPPadding">Specifying OAEP padding</param> /// <returns></returns> public static string RSAStringDecrypt(this byte[] input, RSAKeySet RSAPrivateKey, bool DoOAEPPadding = true) => input.RSADecrypt(RSAPrivateKey, DoOAEPPadding).ConvertToString();
/// <summary> /// Convert the UTF8 input string to byte[] and generate RSA encrypted array using public key provided. /// </summary> /// <param name="input">String input</param> /// <param name="RSAPublicKey">Public key output</param> /// <param name="DoOAEPPadding">Specifying OAEP padding</param> /// <returns></returns> public static byte[] RSAEncrypt(this string input, RSAKeySet RSAPublicKey, bool DoOAEPPadding = true) => input.ConvertToByteArray().RSAEncrypt(RSAPublicKey, DoOAEPPadding);