I have a password protected file in vim.
Yesterday when I tried to open it in vim, got random characters.
I tried to open it in vim in different OS (Linux, Windows, MacOS) and different vim versions (8 and 9), in vain.
I tried also with backups of the file, without success.
I used the password hundreds of times in the last few years, so it's unlikely I forgot it.
How can we explain this and what else can I try ?