I have few files on unix [...] and I need them to encrypt with password so others wouldn't see the data.
Unix offers a lot of utilities doing exactly that: uuencode, openssl and several others.
The problem you will be facing is not so much the encyption/decryption itself but to make sure nobody can intercept it. Suppose you use a password to encrypt your file you might have a script with the line
and then move/send/... the encrypted version of the file. But if someone can read your scvript he could take the password from there and use it himself to decrypt the file.
This means you have to plan carefully so that nobody without the proper rights have even read-access to such a script. As in most security-related problems the solution is very simple once you got the planning of who is allowed to do what under which circumstance correct.
For the tools to use i suggest you read the man-pages/descriptions of the two utilities i mentioned above. They are standard-UNIX tools and freely available open-source respectively. If what they can do suffices for your purpose we can help you put one or the other to work. If not, i suggest doing a Google-search for other such tools. There are reams and reams of software out there, for all kind of purposes. Once you have decided for one or the other we can (hopefully) help you put that o work too.
Help..
I need to decrypt a file that was encrypted using DES 56 Bit.
I have the encryption key and the block size used but no idea what utility to use..
I then need to encrypt the file using pgp and another key I have.. againt I dont know what utility to use.
I am running solaris 9 ....
... (0 Replies)
Dear Experts,
I am using one script name :volume.sh and its written in bash shell script.
I just want to encrypt the script so that any one else cannot see it.
please tell me the commands how to encrypt the script as well as to decrypt it.
Regards,
SHARY (9 Replies)
Hi, I want to encrypt and decrypt a string(database password) which will be used in my scripts.
encrypt the string while storing in a file and while using it in other scripts
it should decrypt.
i tried below method. As it can decrypt easily, it is not recommended.
encrypt=`perl -e 'print unpack... (5 Replies)
I have script for all oracle prod db. I have hard coded the username / password. I need a mechanism to encode and decode the username / password in a shell script.
Another challenge is I use the username and password in a Select command for oracle DB. How can call the decrypted... (2 Replies)
Hi All,
I have stored Oracle database passwords in a hidden file - .pass_file.
My shell script reads the hidden file, gets the password and then logs in to the Oracle database and runs some SQL script.
My requirement is:
I need to provide the shell script to be executed by someone else. So,... (1 Reply)
Hi All,
very good morning all.
I am trying to connect to informatica repository by using shell script.
I have written pmrep connect command in the script file. But i need to provide repository, domain ,username and password to connect. Username and password are hard coded in the script... (8 Replies)
Hi All,
Can I use MCRYPT - (RIJNDAEL-128) / CBC mode to encrypt and decrypt a file?
I am trying to find some sample C program on internet, which will encrypt and decrypt a file. But was not able to find any thing.
Can some help me with the programming.
Thanks. (1 Reply)
Hello,
I have the following UNIX shell script which connects to the teradata database and executes the SQL Queries. For this, I am passing database name, username and password. I don't want to reveal my password to anyone. So, is there any way that I can encrypt my password and read the... (2 Replies)
Discussion started by: ronitreddy
2 Replies
LEARN ABOUT MINIX
pwdauth
PWDAUTH() PWDAUTH()
NAME
pwdauth - password authentication program
SYNOPSIS
/usr/lib/pwdauth
DESCRIPTION
Pwdauth is a program that is used by the crypt(3) function to do the hard work. It is a setuid root utility so that it is able to read the
shadow password file.
Pwdauth expects on standard input two null terminated strings, the password typed by the user, and the salt. That is, the two arguments of
the crypt function. The input read in a single read call must be 1024 characters or less including the nulls. Pwdauth takes one of two
actions depending on the salt.
If the salt has the form "##user" then the user is used to index the shadow password file to obtain the encrypted password. The input
password is encrypted with the one-way encryption function contained within pwdauth and compared to the encrypted password from the shadow
password file. If equal then pwdauth returns the string "##user" with exit code 0, otherwise exit code 2 to signal failure. The string
"##user" is also returned if both the shadow password and the input password are null strings to allow a password-less login.
If the salt is not of the form "##user" then the password is encrypted and the result of the encryption is returned. If salt and password
are null strings then a null string is returned.
The return value is written to standard output as a null terminated string of 1024 characters or less including the null.
The exit code is 1 on any error.
SEE ALSO crypt(3), passwd(5).
NOTES
A password must be checked like in this example:
pw_ok = (strcmp(crypt(key, pw->pw_passwd), pw->pw_passwd) == 0);
The second argument of crypt must be the entire encrypted password and not just the two character salt.
AUTHOR
Kees J. Bot (kjb@cs.vu.nl)
PWDAUTH()