Secrecy: You Must Know the Secret to Solve this Sudoku

Today's Puzzle:

This puzzle requires intimate knowledge of CTC's Sudoku secret. I had to spill the beans to be able to solve this one...

Link to Play:

Secrecy by James Sinclair https://tinyurl.com/SudokuSleuthSecrecy

Rules:

Normal sudoku rules apply, and all clues are standard.

Killer cages: the sum of the digits inside each cage is equal to the small number in the top left corner.

Digits in cells separated by a white dot are consecutive.

Find more puzzles like this at artisanalsudoku.com