ksh program with password Post: 94356

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Top Forums Shell Programming and Scripting ksh program with password Post 94356 by linuxpenguin on Thursday 29th of December 2005 05:19:32 PM

12-29-2005

Registered User

Hmm, I overlooked your question. You said shell script. I bliv it wont be easy doing it in a shell script. You can use something like this

========================================
echo "Enter password: \c"
stty -echo
read a
echo "$a" > pwd.txt
crypt encry_key < pwd.txt > pwd.x
rm pwd.txt
stty echo
echo " Password is \c"
crypt encry_key < pwd.x
========================================

However, the problem here is the encryption key (encry_key or any other string) can be easily seen to those who can read the script. Any person who can execute this script can also read it, So in short anyone who can execute this script, can also know the encrption key and thus can also read the encrypted password file.
So, your best bet would be to resort to c programs.
But my knowledge is limited, may be someone on the forum has some good idea here

linuxpenguin

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LEARN ABOUT SUNOS

pwd.h

pwd.h(3HEAD)							      Headers							      pwd.h(3HEAD)

NAME

       pwd.h, pwd - password structure

SYNOPSIS

       #include <pwd.h>

DESCRIPTION

       The <pwd.h> header provides a definition for struct passwd, which includes the following members:

       char  *pw_name	  user's login name
       uid_t pw_uid	  numerical user ID
       gid_t pw_gid	  numerical group ID
       char  *pw_dir	  initial working di rectory
       char  *pw_shell	  program to use as shell

       The gid_t and uid_t types are defined as described in <sys/types.h>. See types.h(3HEAD).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getpwnam(3C), types.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    10 Sep 2004 						      pwd.h(3HEAD)

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