private static byte[] GetEntropy()
{
byte[] h1 = HashControl.GetSHA512ManagedHash(Constants.CONST1, Constants.CONST6);
byte[] h2 = HashControl.GetSHA512ManagedHash(Constants.CONST2, Constants.CONST5);
byte[] h3 = HashControl.GetSHA512ManagedHash(Constants.CONST3, Constants.CONST4);
byte[] retVal;
byte[] salt = Utils.ConcatByteArrarys(h1, h2);
string base64edSalt = Utils.BytesToBase64String(salt);
retVal = HashControl.DerivePasswordBytes(base64edSalt, h3, 1024);
return(retVal);
}
private static byte[] GetIV(string containerName)
{
byte[] e, m = null;
byte[] s = Utils.StringToUTF8Bytes(Constants.CONST2);
string xmlKey = RSACipher.ExportKeyAsXmlString(containerName);
RSACryptoServiceProvider rsa = RSACipher.ImportKeyFromXmlString(containerName, xmlKey);
RSACipher.QueryRsaKeyParameters(rsa, out m, out e);
byte[] h3 = HashControl.GetSHA512ManagedHash(m, e);
string h3Base64 = Utils.BytesToBase64String(h3);
return(HashControl.DerivePasswordBytes(h3Base64, h3, 32));
}
private static byte[] GetKey(string containerName)
{
byte[] d, p, q = null;
byte[] s = Utils.StringToUTF8Bytes(Constants.CONST1);
string xmlKey = RSACipher.ExportKeyAsXmlString(containerName);
RSACryptoServiceProvider rsa = RSACipher.ImportKeyFromXmlString(containerName, xmlKey);
RSACipher.QueryRsaKeyParameters(rsa, out d, out p, out q);
byte[] h1 = HashControl.GetSHA512ManagedHash(d, p);
byte[] h2 = HashControl.GetSHA512ManagedHash(q, s);
string h1Base64 = Utils.BytesToBase64String(h1);
return(HashControl.DerivePasswordBytes(h1Base64, h2, 32));
}