/// <summary>
/// Generates an AesParameters that contains a random Key and IV
/// </summary>
/// <returns>AesParameters</returns>
public static AesParamenters GeneratesAesParameters()
{
AesParamenters aesParameters;
using (Aes aes = Aes.Create())
{
aesParameters = new AesParamenters();
Array.Copy(aes.Key, aesParameters.Key, aesParameters.Key.Length);
Array.Copy(aes.IV, aesParameters.IV, aesParameters.IV.Length);
}
return(aesParameters);
}
/// <summary>
/// Encrypt a buffer with the given key. The IV is generated dynamically
/// </summary>
/// <param name="vBYTE_Data">The plain buffer</param>
/// <param name="STRING_Key">The encryption key</param>
/// <returns></returns>
public static byte[] AES_CBC_Encryption_Rand_IV(byte[] vBYTE_Data, string STRING_Key)
{
AesParamenters aesParameters = GeneratesAesParameters();
/* Adapts the password lenght */
string paddedKey = (STRING_Key.Length > 32) ? STRING_Key.Substring(0, 32) : STRING_Key.PadLeft(32, '*');
var vBYTE_paddedKey = Encoding.UTF8.GetBytes(paddedKey);
var encryptBytes = AES_CBC_Encryption(vBYTE_Data, vBYTE_paddedKey, aesParameters.IV);
if (encryptBytes == null)
{
return(null);
}
return(encryptBytes);
}
/// <summary>
/// Encrypt a string with the given key. The IV is generated dynamically
/// </summary>
/// <param name="STRING_Data">The string to be encrypt</param>
/// <param name="STRING_Key">The encryption Key</param>
/// <returns></returns>
public static string AES_CBC_Encryption_Rand_IV(string STRING_Data, string STRING_Key)
{
AesParamenters aesParameter = GeneratesAesParameters();
/* Adapts the password lenght */
string paddedKey = (STRING_Key.Length > 32) ? STRING_Key.Substring(0, 32) : STRING_Key.PadLeft(32, '*');
var vBYTE_paddedKey = Encoding.UTF8.GetBytes(paddedKey);
byte[] plainBytes = Encoding.UTF8.GetBytes(STRING_Data);
var encryptBytes = AES_CBC_Encryption(plainBytes, vBYTE_paddedKey, aesParameter.IV);
if (encryptBytes == null)
{
return(null);
}
return(Convert.ToBase64String(encryptBytes));
}