openssl enc des-ecb -e -K 3351243676554978 -iv 0000000000000000 -nosalt -in input -out output IN THE ABOVE COMMAND WHAT -iv means.what is it's significance. i want basic ECB encryption without salt and anything else.I just want to give plain text and key as input and I expect encrypted output. for this could anybody help me.plz give me the openssl command arguments for my scenario venkat narayana __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com