That’s no longer a one time pad. That’s closer to a homebrew stream cipher with the weakness of having a key that you just hope no one notices.
I’m certainly not an expert.
But could you generate pads from mutually accessible data sources?
Like use hit_me_baby_one_more_time_not_a_virus.mp3 appended with a password, as a seed in a pseudo random number generating algorithm, then do the same thing with another data source, repeat however many times, then XOR the generated numbers together, and use the result as a pad?
ricecake@sh.itjust.works 6 hours ago
pageflight@lemmy.world 6 hours ago
Steganography may be interesting in that vein. Hiding data within larger images / sound files etc.