Password Cracking
Passwords aren't generally stored in plaintext form. A file containing all the passwords in plaintext form would be far too attractive a target, so instead, a one-way hash function is used. The best-known of these functions is based on DES and is called crypt(), which is described in the manual page shown below.
NAME crypt - password and data encryption SYNOPSIS #define _XOPEN_SOURCE #include <unistd.h> char *crypt(const char *key, const char *salt); DESCRIPTION crypt() is the password encryption function. It is based on the Data Encryption Standard algorithm with variations intended (among other things) to discourage use of hardware implementations of a key search. key is a user's typed password. salt is a two-character string ...
Get Hacking: The Art of Exploitation, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
