I am trying to install a vsftpd with some virtual users using the Berkeley DB. I have mainly followed this guide: http://www.neant.ro/2012/04/secure-ftp-with-vsftpd/ . Everything works fine, but I want to have the passwords hashed inside the database. I am using CentOS 6.3 with glibc 2.12.
From the manpage of pam_userdb.so I assume that I can use what crypt provides. If we take a look of crypt(3) manpage we can use SHA-256 and SHA-512. I would to use one of those.
My doubt is how to implement it. From what I know i need to go to my pam.d file and edit and add the argument crypt but... which value should I give it? 5 for SHA-256? 6 for SHA-512?
auth sufficient pam_userdb.so db=/path/to/db/virtual-users crypt=?
account sufficient pam_userdb.so db=/path/to/db/virtual-users crypt=?
session sufficient pam_loginuid.so
Now I need the password in SHA-256/SHA-512 inside the database. Which is the correct way to get the hash? I suppose I have to use the crypt function. However, I need to get it using Ruby, is there any way?
Thanks in advance for the help,
