private void SetMethods(ITemplateEngine templateEngine, SymmetricEncryptionCryptoTaskModel cryptoModel)
{
if (cryptoModel.UsePassword)
{
string macSuffix = string.Empty;
if (cryptoModel.UseMac)
{
macSuffix = "Mac";
}
var passwordMethodsTemplate = new SimpleTemplateEngine(
GetTemplateStream($"Resources.CodeTemplates.SymmetricEncryption.PasswordMethods{macSuffix}.txt"));
string sha = "SHA256";
switch (cryptoModel.SelectedSecurityLevel)
{
case SecurityLevel.Default:
break;
case SecurityLevel.VerySecure:
sha = "SHA512";
break;
}
//passwordMethodsTemplate.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.ShaImplementation, sha);
templateEngine.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.PasswordMethods, passwordMethodsTemplate.GetResult());
}
}
private void SetConfiguration(ITemplateEngine te, SymmetricEncryptionCryptoTaskModel model)
{
if (model.UsePassword)
{
var passwordConfigTemplate = new SimpleTemplateEngine(
GetTemplateStream($"Resources.CodeTemplates.SymmetricEncryption.PasswordConfiguration.txt"));
int saltSize = 64;
int iterations = 1000;
switch (model.SelectedSecurityLevel)
{
case SecurityLevel.Default:
saltSize = 265;
break;
case SecurityLevel.VerySecure:
saltSize = 512;
iterations = 10000;
break;
}
passwordConfigTemplate.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.SaltSize, saltSize);
passwordConfigTemplate.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.Iterations, iterations);
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.PasswordConfiguration, passwordConfigTemplate.GetResult());
}
int keySize = 128;
string aes = "AesManaged";
string mac = "HMACSHA256";
switch (model.SelectedSecurityLevel)
{
case SecurityLevel.Default:
keySize = 192;
mac = "HMACSHA384";
break;
case SecurityLevel.VerySecure:
keySize = 256;
aes = "AesCryptoServiceProvider";
mac = "HMACSHA512";
break;
}
if (model.UseMac)
{
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.MacMode, mac);
}
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.Blocksize, 128);
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.KeySize, keySize);
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.AesProvider, aes);
}
public ICryptoCodeGenerationTaskModel CreateAndSetModel()
{
Model = new SymmetricEncryptionCryptoTaskModel();
return(Model);
}
