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));
}
public static RSACryptoServiceProvider ImportKeyFromXmlString(string containerName, string xmlKeyString)
{
return(RSACipher.ImportKeyFromXmlString(containerName, xmlKeyString));
}
public static string ExportKeyAsXmlString(string containerName, bool includePrivateKeyInfo = true)
{
return(RSACipher.ExportKeyAsXmlString(containerName, includePrivateKeyInfo));
}
public static void ImportKeyFromXmlFile(string filePath, string containerName)
{
string xmlKey = Utils.ReadStringFromFile(filePath);
RSACipher.ImportKeyFromXmlString(containerName, xmlKey);
}
public static void ExportKeyAsXmlFile(string filePath, string containerName, bool includePrivateKeyInfo = true)
{
string xmlKey = RSACipher.ExportKeyAsXmlString(containerName, true);
Utils.WriteStringToFile(xmlKey, filePath);
}
