At the end of Star Wars: A New Hope, the Rebel Alliance, with the help of the stolen plans of the Death Star and an accurate proton torpedo shot from Luke Skywalker's X-wing guided by the Force, destroyed the Death Star, but, throughout the film up to that point the figure of Obi-Wan Kenobi was always present and played a vital role regarding the fate of the gargantuan battle station.
Throughout a sequence of events in the film, Obi-Wan Kenobi's words and actions demonstrated that he not only knew of the galactic import of the Death Star but also how the battle station worked.
First, the old hermit felt its power during the destruction of Alderaan.
I felt a great disturbance in the Force as if millions of voices suddenly cried out in terror and were suddenly silenced. I fear something terrible has happened.
Then, on board the Millennium Falcon, while following a lone TIE/LN starfighter, Kenobi, from a good distance, detected the space station.
INTERIOR: MILLENNIUM FALCON -- COCKPIT.
The distant star can be distinguished as a small moon or planet.
LUKE: Look at him. He's headed for that small moon.
HAN: I think I can get him before he gets there...he's almost in range.
The small moon begins to take on the appearance of a monstrous spherical battle station.
BEN: That's no moon! It's a space station.
Obi-Wan said that neither fighting or surrender were viable choices, but a third option was available to them. The old Jedi was able to navigate his way through the station and deactivate the Death Star’s tractor beam generator.
We have to break the tractor at its power source in order to execute a clean escape, Luke. The tractor beam is coupled to the main reactors at seven locations.
At the climax of the movie, using his newfound abilities, Obi-Wan Kenobi was able to guide Skywalker during the Battle of Yavin so that he could successfully destroy the Death Star with proton torpedoes.
It is not unreasonable to think that Obi-Wan could have discovered potential weaknesses in the battle station that he could have exploited in order to destroy the Death Star, but, he never did because his priority was to save Princess Leia and his new friends and honor a old one (Leia's father)'s request which led him to confront Darth Vader with his further heroic death.
In view of the foregoing, I ask whether there are sources (canon or Legends) that detail the idea that Obi-Wan Kenobi knew how to destroy the Death Star without the use of the stolen technical schematics of the Empire's planet-destroying Death Star.