MD5 BSD like passwords

Ruby
1

I’m coding a “postfixadmin” using ruby, so, all the passwords are stored
in DB using a bsd like md5 hash. Is there any simple way I could
generate passwords like that (the same hash could be used to generate
shadow pass?)?.

Really sorry for my lame english, and if the question is stupid, but I’m
a real newbie to ruby.

Thanks in advance.

2

Felipe C. wrote:

I’m coding a “postfixadmin” using ruby, so, all the passwords are stored
in DB using a bsd like md5 hash. Is there any simple way I could
generate passwords like that (the same hash could be used to generate
shadow pass?)?.

Really sorry for my lame english, and if the question is stupid, but I’m
a real newbie to ruby.

Thanks in advance.

just found out facets library, sorry for the stupid question.

3

On 1/13/07, Felipe C. [email protected] wrote:

I’m coding a “postfixadmin” using ruby, so, all the passwords are stored
in DB using a bsd like md5 hash. Is there any simple way I could
generate passwords like that (the same hash could be used to generate
shadow pass?)?.

Really sorry for my lame english, and if the question is stupid, but I’m
a real newbie to ruby.

you can generate MD5 with:
require ‘digest/md5’
hash = Digest::MD5.digest(data) # binary
or hash = Digest::MD5.hexdigest(data) #hexa

4

Thanks a bunch for the reply. I’ll take a good look at the documents.

F. Senault wrote:

If you take a look at the manpage of the crypt system function (man 3
crypt or crypt(3) ),
you’ll see an explanation of the hash format.

I have no idea of the portability of that function, though. For
instance, it doesn’t work on my Windows box, but it works well enough
with FreeBSD and Linux.

Fred

5

Le 13 janvier 2007 à 14:41, Felipe C. a écrit :

I’m coding a “postfixadmin” using ruby, so, all the passwords are stored
in DB using a bsd like md5 hash. Is there any simple way I could
generate passwords like that (the same hash could be used to generate
shadow pass?)?.

If that’s really a BSD-like password (in the form $n$aaaaaaa$aa…), the
crypt function should be able to generate it on a unix system, as long
as you pass the entire salt ($ included) :

“password”.crypt(“$1$Eou1PtvJ$”)
=> “$1$Eou1PtvJ$bh2HAitLkEOwoU6Fjuh8i0”

If you take a look at the manpage of the crypt system function (man 3
crypt or crypt(3) ),
you’ll see an explanation of the hash format.

I have no idea of the portability of that function, though. For
instance, it doesn’t work on my Windows box, but it works well enough
with FreeBSD and Linux.

Fred