protected static void DecryptEntity(EncryptedTableEntity entity)
{
var algorithm = AzureEncryption.GetAlgorithm(entity.EncryptionVersion.Value);
foreach (var info in GetEncyptableProperties(entity))
{
try {
if (info.PropertyType == typeof(string))
{
var encrypted = (string)info.GetValue(entity);
if (!string.IsNullOrEmpty(encrypted))
{
var decrypted = Decrypt(Convert.FromBase64String(encrypted), algorithm);
info.SetValue(entity, Encoding.UTF8.GetString(decrypted));
}
}
else if (info.PropertyType == typeof(byte[]))
{
var encrypted = (byte[])info.GetValue(entity);
if (encrypted != null && encrypted.Length > 0)
{
info.SetValue(entity, Decrypt(encrypted, algorithm));
}
}
else
{
// TODO: Log, throw, what? I feel there should be some feedback if you mark an unsupported property as [Encrypt]
}
}
catch (Exception ex) {
Trace.TraceWarning("Failed to decrypt {0}.{1}: {2}", entity.GetType().FullName, info.Name, ex);
}
}
}
protected static void EncryptEntity(EncryptedTableEntity entity, IDictionary <string, EntityProperty> entityProperties)
{
var algorithm = AzureEncryption.GetAlgorithm(entity.EncryptionVersion.Value);
foreach (var info in GetEncyptableProperties(entity))
{
try {
if (!entityProperties.TryGetValue(info.Name, out var entityProp))
{
continue; // Do we need to log this, idk if it's every actually going to come up.
}
switch (entityProp.PropertyType)
{
case EdmType.Binary:
if (entityProp.BinaryValue != null && entityProp.BinaryValue.Length > 0)
{
entityProp.BinaryValue = Encrypt(entityProp.BinaryValue, algorithm);
}
break;
case EdmType.String:
if (!string.IsNullOrEmpty(entityProp.StringValue))
{
entityProp.StringValue = Convert.ToBase64String(Encrypt(Encoding.UTF8.GetBytes(entityProp.StringValue), algorithm));
}
break;
default:
// TODO: Log, throw, what? I feel there should be some feedback if you mark an unsupported property as [Encrypt]
break;
}
}
catch (Exception ex) {
Trace.TraceWarning("Failed to encrypt {0}.{1}: {2}", entity.GetType().FullName, info.Name, ex);
}
}
}
