$ openssl sha1 /etc/passwd
SHA1(/etc/passwd)= 7bd2fab8b900ea3255d95a190ceabb35e839b18e
This prints the SHA1 sum I wrote about few days ago.
$ openssl md5 /etc/passwd
MD5(/etc/passwd)= 4e85dafb634ceb6afc3acbf2e1050151
$openssl help
Standard commands
asn1parse ca ciphers crl crl2pkcs7
dgst dh dhparam dsa dsaparam
ec ecparam enc engine errstr
gendh gendsa genrsa nseq ocsp
passwd pkcs12 pkcs7 pkcs8 prime
rand req rsa rsautl s_client
s_server s_time sess_id smime speed
spkac verify version x509
You can invoke several commands for creating public keypairs, prime
numbers, random
data, base64 encoding and so on.
You also create SSL self signed certificate and private key using this utility.
$ openssl rand -out randdata.bin 2048
will generate random data of size 2048 bytes.
Several possibilities are there. You can encrypt files, decrypt them ,
use salt, you can do a
whole bunch of stuff.
If you simply enter openssl you can enter these commands within the
openssl shell interface.
-Girish
--
Gayatri Hitech
web: http://gayatri-hitech.com
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