//[Obsolete]
//public static string EncryptToBase64String(SecureString passwordToProtect, string keyId, RSACryptoServiceProvider publicKey)
//{
// return EncryptToBase64String(passwordToProtect, keyId, publicKey, null, null);
//}
///// <summary>
///// This may be used to secure a password for symmetric encryption.
///// </summary>
///// <param name="passwordToProtect"></param>
///// <param name="publicKey"></param>
///// <returns></returns>
//[Obsolete("Use the IPublicKey infrastructure")]
//public static string EncryptToBase64String(SecureString passwordToProtect, string key1Id, RSACryptoServiceProvider publicKey1, string key2Id, RSACryptoServiceProvider publicKey2)
//{
// // Use a 4-byte array to fill it with random bytes and convert it then
// // to an integer value.
// byte[] plainBytes;
// //byte[] encryptedBytes = null;
// plainBytes = passwordToProtect.ToByteArray();
// var asymEnc = new AsymmetricEncryptor(AsymmetricStrategyOption.Aes256_1000);
// var asymObj = asymEnc.EncryptObject(plainBytes, key1Id, publicKey1, key2Id, publicKey2);
// var json = Serializer.SerializeToJson(asymObj);
// var bytes = Encoding.UTF8.GetBytes(json);
// return Convert.ToBase64String(bytes);
//}
/// <summary>
/// This may be used to secure a password for symmetric encryption.
/// </summary>
/// <param name="passwordToProtect"></param>
/// <param name="publicKey"></param>
/// <returns></returns>
public static async Task <string> EncryptToBase64StringAsync(SecureString passwordToProtect, IPublicKey publicKey1, IPublicKey publicKey2)
{
// Use a 4-byte array to fill it with random bytes and convert it then
// to an integer value.
byte[] plainBytes;
//byte[] encryptedBytes = null;
plainBytes = passwordToProtect.ToByteArray();
var asymEnc = new AsymmetricEncryptor(AsymmetricStrategyOption.Aes256_1000);
var asymObj = await asymEnc.EncryptObject_PrivateAsync(plainBytes, publicKey1, publicKey2);
var json = Serializer.SerializeToJson(asymObj);
var bytes = Encoding.UTF8.GetBytes(json);
return(Convert.ToBase64String(bytes));
}
/// <summary>
/// This may be used to decrypte a password used for symmetric encryption.
/// </summary>
/// <param name="encryptedValueAsBase64String"></param>
/// <param name="privateKey"></param>
/// <returns></returns>
public static async Task <SecureString> DecryptFromBase64StringAsync(string encryptedValueAsBase64String, IPrivateKey privateKey1, IPrivateKey privateKey2)
{
if (string.IsNullOrEmpty(encryptedValueAsBase64String))
{
throw new ArgumentException("encryptedValueAsBase64String");
}
byte[] plainBytes = null;
// Read encrypted data
var bytes = Convert.FromBase64String(encryptedValueAsBase64String);
var json = Encoding.UTF8.GetString(bytes);
var asymEncObj = Serializer.DeserializeFromJson <AsymmetricallyEncryptedObject>(json);
// deserialize the object
var asymEnc = new AsymmetricEncryptor();
plainBytes = (byte[])await asymEnc.DecryptObjectAsync(asymEncObj, privateKey1, privateKey2);
var secureString = new SecureString();
var chars = System.Text.Encoding.UTF8.GetChars(plainBytes);
foreach (var c in chars)
{
secureString.AppendChar(c);
}
for (int i = 0; i < chars.Length; i++)
{
// clear chars array
chars[i] = 'X';
}
chars = null;
return(secureString);
}
//[Obsolete]
//public static string EncryptToBase64String(SecureString passwordToProtect, string keyId, RSACryptoServiceProvider publicKey)
//{
// return EncryptToBase64String(passwordToProtect, keyId, publicKey, null, null);
//}
///// <summary>
///// This may be used to secure a password for symmetric encryption.
///// </summary>
///// <param name="passwordToProtect"></param>
///// <param name="publicKey"></param>
///// <returns></returns>
//[Obsolete("Use the IPublicKey infrastructure")]
//public static string EncryptToBase64String(SecureString passwordToProtect, string key1Id, RSACryptoServiceProvider publicKey1, string key2Id, RSACryptoServiceProvider publicKey2)
//{
// // Use a 4-byte array to fill it with random bytes and convert it then
// // to an integer value.
// byte[] plainBytes;
// //byte[] encryptedBytes = null;
// plainBytes = passwordToProtect.ToByteArray();
// var asymEnc = new AsymmetricEncryptor(AsymmetricStrategyOption.Aes256_1000);
// var asymObj = asymEnc.EncryptObject(plainBytes, key1Id, publicKey1, key2Id, publicKey2);
// var json = Serializer.SerializeToJson(asymObj);
// var bytes = Encoding.UTF8.GetBytes(json);
// return Convert.ToBase64String(bytes);
//}
/// <summary>
/// This may be used to secure a password for symmetric encryption.
/// </summary>
/// <param name="passwordToProtect"></param>
/// <param name="publicKey"></param>
/// <returns></returns>
public static async Task<string> EncryptToBase64StringAsync(SecureString passwordToProtect, IPublicKey publicKey1, IPublicKey publicKey2)
{
// Use a 4-byte array to fill it with random bytes and convert it then
// to an integer value.
byte[] plainBytes;
//byte[] encryptedBytes = null;
plainBytes = passwordToProtect.ToByteArray();
var asymEnc = new AsymmetricEncryptor(AsymmetricStrategyOption.Aes256_1000);
var asymObj = await asymEnc.EncryptObject_PrivateAsync(plainBytes, publicKey1, publicKey2);
var json = Serializer.SerializeToJson(asymObj);
var bytes = Encoding.UTF8.GetBytes(json);
return Convert.ToBase64String(bytes);
}
/// <summary>
/// This may be used to decrypte a password used for symmetric encryption.
/// </summary>
/// <param name="encryptedValueAsBase64String"></param>
/// <param name="privateKey"></param>
/// <returns></returns>
public static async Task<SecureString> DecryptFromBase64StringAsync(string encryptedValueAsBase64String, IPrivateKey privateKey1, IPrivateKey privateKey2)
{
if (string.IsNullOrEmpty(encryptedValueAsBase64String))
{
throw new ArgumentException("encryptedValueAsBase64String");
}
byte[] plainBytes = null;
// Read encrypted data
var bytes = Convert.FromBase64String(encryptedValueAsBase64String);
var json = Encoding.UTF8.GetString(bytes);
var asymEncObj = Serializer.DeserializeFromJson<AsymmetricallyEncryptedObject>(json);
// deserialize the object
var asymEnc = new AsymmetricEncryptor();
plainBytes = (byte[])await asymEnc.DecryptObjectAsync(asymEncObj, privateKey1, privateKey2);
var secureString = new SecureString();
var chars = System.Text.Encoding.UTF8.GetChars(plainBytes);
foreach (var c in chars)
{
secureString.AppendChar(c);
}
for (int i = 0; i < chars.Length; i++)
{
// clear chars array
chars[i] = 'X';
}
chars = null;
return secureString;
}
