https://learn.microsoft.com/en-us/dotnet/api/system.security.cryptography.protecteddata.unprotect?view=netframework-4.8.1&redirectedfrom=MSDN
ProtectedData.Unprotect(Byte[], Byte[], DataProtectionScope) Method (System.Security.Cryptography)...
Decrypts the data in a specified byte array and returns a byte array that contains the decrypted data.
system securitybytemethodcryptography