Linux Kernel 4.17 saw the inclusion of NSA’s ‘controversial’ encryption algorithm Speck. Linux Kernel 4.18 will see Speck being available as a supported algorithm with fscrypt and not everyone is happy about it.Before you panic or form wrong conclusions, you should know that Speck is not a backdoor. It’s just a not-so-strong encryption algorithm from American agency NSA and it’s available as a module in Linux Kernel.