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Escaping a password entered on a Windows command line

Topics: Technical Issues, Users Discussion
Jan 30 at 6:50 PM
When mounting a volume from a Windows command line, how do I escape a password containing special characters?

Many thanks,
Jan 31 at 9:10 PM
If using in a command window, or run dialog, just enclosing the password in double quotes eg /p "$!&^%><\/'^" should work, no escaping needed! However, in batch files, some characters just don't seem to be permissible, and don't seem escapable (no idea why) eg % ' £ (there may be others). Are you having particular issues with specific characters?
Jan 31 at 10:29 PM
Edited Jan 31 at 10:53 PM

Yes, at the very least I was having issues with " (double-quote). To demonstrate this, I created a volume with a password of a single double-quote, no PIM and no keyfile. Using the command line to attempt to mount this, I got four different responses depending on the password I used...
  • For ", "" and ^", the standard "Enter Password" dialogue was immediately displayed.
  • For ?", a VeraCrypt message was immediately displayed - "Error while parsing command line."
  • For a", the standard incorrect password sequence (i.e. "Please wait...", followed by "Operation failed..." and then the password dialogue).
  • Finally, \" succeeded!
This has been driving me crazy for the last few days (with a mixture of unwarranted optimism and sheer despair, I had even downloaded the VeraCrypt source).

Many thanks for your interest - trying to document this for you was enough to get me over the line!

I'm sure that there are other characters that'll need escaping - at the very least the backslash, but most problem children work fine. So, a volume whose password is __!"£$%^&*()<>?__ can be mounted from the command line using
or from a batch file by using
(Sorry for the messy format, ironically the backslash apparently needs to be escaped on this site!)

I'll check out the requirements for the backslash and report back.
I tried a volume with a password of \". I've not been able to open this from the command line. My failures include