private void SetConfiguration(ITemplateEngine te, SymmetricEncryptionCryptoTaskModel model)
{
if (model.UsePassword)
{
var passwordConfigTemplate = new SimpleTemplateEngine(
GetTemplateStream($"Resources.CodeTemplates.SymmetricEncryption.PasswordConfiguration.txt"));
int saltSize = 64;
int iterations = 1000;
switch (model.SelectedSecurityLevel)
{
case SecurityLevel.Default:
saltSize = 265;
break;
case SecurityLevel.VerySecure:
saltSize = 512;
iterations = 10000;
break;
}
passwordConfigTemplate.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.SaltSize, saltSize);
passwordConfigTemplate.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.Iterations, iterations);
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.PasswordConfiguration, passwordConfigTemplate.GetResult());
}
int keySize = 128;
string aes = "AesManaged";
string mac = "HMACSHA256";
switch (model.SelectedSecurityLevel)
{
case SecurityLevel.Default:
keySize = 192;
mac = "HMACSHA384";
break;
case SecurityLevel.VerySecure:
keySize = 256;
aes = "AesCryptoServiceProvider";
mac = "HMACSHA512";
break;
}
if (model.UseMac)
{
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.MacMode, mac);
}
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.Blocksize, 128);
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.KeySize, keySize);
te.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.AesProvider, aes);
}
protected override void ApplyTemplate(ITemplateEngine templateEngine, ICryptoCodeGenerationTaskModel model, Project project,
FileInfo file)
{
var ns = ProjectHelpers.GetFileNameSpace(project, file.FullName);
templateEngine.AddReplacementValue(CodeGenerationTemplateKeys.Namespace, ns);
}
private void SetMethods(ITemplateEngine templateEngine, SymmetricEncryptionCryptoTaskModel cryptoModel)
{
if (cryptoModel.UsePassword)
{
string macSuffix = string.Empty;
if (cryptoModel.UseMac)
{
macSuffix = "Mac";
}
var passwordMethodsTemplate = new SimpleTemplateEngine(
GetTemplateStream($"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());
}
}
protected override void ApplyTemplate(ITemplateEngine templateEngine, ICryptoCodeGenerationTaskModel model, Project project,
FileInfo file)
{
if (!(model is SymmetricEncryptionCryptoTaskModel cryptoModel))
{
return;
}
var ns = ProjectHelpers.GetFileNameSpace(project, file.FullName);
templateEngine.AddReplacementValue(SymmetricCryptoProviderTemplateKeys.Namespace, ns);
SetConfiguration(templateEngine, cryptoModel);
SetMethods(templateEngine, cryptoModel);
}
protected override void ApplyTemplate(ITemplateEngine templateEngine,
ICryptoCodeGenerationTaskModel model, Project project, FileInfo file)
{
templateEngine.AddReplacementValue("namespace", "System");
templateEngine.AddReplacementValue("classname", "TestClass");
}
