public byte[] Unprotect(byte[] protectedData)
{
protectedData = protectedData.UnGZip();
var cacheKey = protectedData.ToBase64String();
return(CachedDecrptedData.GetOrAdd(cacheKey, (key) =>
{
var keyLength = protectedData.First();
var encryptionKeyReference = protectedData.Skip(1).Take(keyLength).ToArray();
var dataPart = protectedData.Skip(1 + keyLength).ToArray();
var encryptionKey = DataKeyService.GetEncryptionKey(encryptionKeyReference);
return CreateProtector(encryptionKey).Unprotect(dataPart);
}));
}