How to Generate, Encrypt, Decrypt Random Passwords on RHEL Linux 7, CentOS 6 and Fedora 17-21
2Hello Everyone,
In this tutorial,
Let Us Install Generate/Encrypt/Decrypt Random Passwords in Fedora 21
You Can also Install in CentOS 7, Oracle Linux, Cloud Linux, Redhat Linux 6,7.
1. Generate a random unique password of length equal to 10 characters
Step1 :- yum install pwgen
Step2 :- pwgen 10 1
Step3 :- pwgen 50
Step4 :- yum install expect
Step5 :- yum –y install makepasswd --- As per choice
Step6 :- makepasswd --- Default is 10
Step7 :- makepasswd --char 50
Step8 :- makepasswd --char 20 --count 7 --- Generate 7 random password of 20cht.
2. Encrypt a password using crypt along with salt.
Salt is a random data which servers as an additional input to one way function in order to protect password against dictionary attack.
Step9 :- Yum install mkpasswd
Step10 :- mkpasswd cloudnetwork
mkpasswd cloudnetwork -s tt
4. Encrypt a string say “cloudnetwork is a video tutorials make in Linux,Ubuntu” using aes-256-cbc encryption using password say “cloudnetwork” and salt.
Step8 :- echo cloudnetwork-is-a-video-tutorials-make-in-Linux,Ubuntu | openssl
enc -aes-256-cbc -a -salt -pass pass:cloudnetwork
5. Decrypt the above string using openssl command using the -aes-256-cbc decryption.
Step9 :- echo U2FsdGVkX18Zgoc+dfAdpIK58JbcEYFdJBPM9oXWsgpvpdO/Z | openssl
enc -aes-256-cbc -a -d -salt -pass pass:cloudnetwork
NOTE :- For Any Clarification Please Below
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