For better readability and easier entry of long passwords I thought it was a good idea to group these using a fixed separator like so:
Assuming this structure of the password is known to an attacker, are there any security implications, other than the effective length of the password only being 20 instead of 23, and the character space being reduced by 1 char (".")?
My main concern is that some encryption methods could allow the reconstruction of plaintext, given that some parts of the key are known.
Thanks for any comments on this!