After the bypass to bypass the PFS protection, and the various advances in particular to decrypt the backups with the use of GameArchives, the developer https://twitter.com/notzecoxao/status/855856555169906689 offers us to discover details about the Sealedkey and pfsSKKey which encrypts the backups.
These searches were based on a PlayStation 4 DevKit for deciphering them, claiming however that the Sealedkey / pfsSKKey keys used in the PlayStation 4 Retail must be the same.
According to the development wiki the Sealedkey / pfsSKKey can be obtained in different places and can be used to encrypt backup data, toppers, but also to decrypt them.
Available http://www.psdevwiki.com/ps4/Sealedkey_/_pfsSKKey
These searches were based on a PlayStation 4 DevKit for deciphering them, claiming however that the Sealedkey / pfsSKKey keys used in the PlayStation 4 Retail must be the same.
According to the development wiki the Sealedkey / pfsSKKey can be obtained in different places and can be used to encrypt backup data, toppers, but also to decrypt them.
Available http://www.psdevwiki.com/ps4/Sealedkey_/_pfsSKKey