This program try to find the password of a LUKS encrypted volume for people who forget a part of it. It uses CUDA to accelerate testing password candidates.

Passsearcher-luks <device> <expression>

Try to find the password of the LUKS encrypted volume 'device'.

'expression' defines password candidates.

A '[' and ']' block is corresponding to a charactor in a password. Each charactors and charactor ranges inside '[' and ']' are used to generate password candidates.

abc[0-2]

This expression generates following password candidates.

abc0
abc1
abc2

xy[w3B][a-c]z

generates:

xywaz
xy3az
xyBaz
xywbz
xy3bz
xyBbz
xywcz
xy3cz
xyBcz

[a-zA-Z0-9][a-zA-Z0-9][a-zA-Z0-9][a-zA-Z0-9]

This expression generates all 4 characters password candidates consist of upper and lower case alphabets and numbers.

If you created LUKS volumes /dev/sda1 with password "Password16", but you forget first 1 character and last 2 numbers.

Passsearcher-luks /dev/sda1 [A-Z]assword[1-9][0-9]

• CUDA runtime

• g++
• CUDA toolkit

• sudo apt-get install libgcrypt20-dev
• sudo apt-get install libdevmapper-dev
• sudo apt-get install uuid-dev
• sudo apt-get install libboost-program-options-dev

make

Currently implemented hash function is only sha1. It is a default hash function of cryptsetup before version 1.7.0.

Supported maximum password length is 63.