So today I was trying to install NCrack 0.4Alpha, and I encountered this problem of undeclared variable
userkey not in scope. Below are the commands to run and the red marks where the errors appear.
wget http://nmap.org/ncrack/dist/ncrack-0.4ALPHA.tar.gz tar xzf ncrack-0.4ALPHA.tar.gz cd ncrack-0.4ALPHA.tar.gz && ./configure make make install
... crypto.cc: In function 'void deskey(unsigned char*, int)': crypto.cc:545:14: error: 'DE1' was not declared in this scope crypto.cc: In function 'void cookey(long unsigned int*)': crypto.cc:590:14: error: 'usekey' was not declared in this scope ...
Online people suggest to install the following crypto packages. And then redo above installation steps.
sudo apt-get install build-essential checkinstall libssl-dev libssh-dev