PS4Cheater homebrew app and the previously reported PS4 Sealedkey / pfsSKKey for PlayStation 4 savegame and trophy data decryption charlyzard (Twitter) of PSNCompare.com shared PS4SaveDataDecryptingTools in what he calls "just the first steps" of free and open-source PS4 SaveData Decrypting Tools in development utilizing PS4DumpSealedKeyAndSecret and PS4DecryptSaveDataKey!
Download: PS4SaveDataDecryptingTools-master.zip / GIT
Below are some preliminary details from the README.md, to quote: PS4SaveDataDecryptingTools
Just dumps to USB the sealed key and secret as shown here:
Working code based on the wiki code:
Put the encrypted PFS key you want to decrypt in your first USB drive and name it pfskeyencrypted
This payload spits out a decryptedSaveDataKey.bin file on your USB
Thanks to @Thibobo for the heads-up on Twitter of the news earlier today!