How to Encrypt string ?

[Mansour]

Hi

Do you know any function that encrypt a string with key and allow the encrypted string to be decrypt by the same key of course (not hashing) ?

What I want is something easy to use.

Thanks

[Koobi]

How about mcrypt?
What encryption function you want to use really depends on what you want to use it for, though

[Mansour]

"This is an interface to the mcrypt library" and need to install it in the server. Is there any built-in function.

I want to send some information from one server to another, the sensitive values is encrypted like password, but I want to encrypt all the variable and its value and then send it (to increase the security)

Thanks Koobi

[Floris]

http://uk.php.net/md5

This is 'hash' and not encrypt, so you can't decrypt it, but it is great for adding security.

[Mansour]

Thnks Floris, yes we can not decrypt hash, so MD5 didn't help me

[Symen_4ab]

I personally would use a database for this kind of things...
Normally, only the admin should be able to access phpmyadmin/sql console..

a row with the "encrypted" text (well, it's plaintext in the database) and another one with the password to decrypt/access it (why not md5 it )

[Koobi]

http://uk.php.net/md5

This is 'hash' and not encrypt, so you can't decrypt it,

That's what I thought until someone told me that there's a tool (ugh, another one of those tools) out there that lets you retrieve the original data of the hash. Of course this isn't legal but if someone want's to mess with your data, they wouldn't care about legality issues.

[MrNase]

That's what I thought until someone told me that there's a tool (ugh, another one of those tools) out there that lets you retrieve the original data of the hash. Of course this isn't legal but if someone want's to mess with your data, they wouldn't care about legality issues.

Yes that's true. I tried that with my own password but it took me ages.

[Chroder]

That's what I thought until someone told me that there's a tool (ugh, another one of those tools) out there that lets you retrieve the original data of the hash. Of course this isn't legal but if someone want's to mess with your data, they wouldn't care about legality issues.

But that isn't decrypting, thats cracking. There is no reverse algorithm for a hash as there is for an encryption.

[Koobi]

But that isn't decrypting, thats cracking. There is no reverse algorithm for a hash as there is for an encryption.

Yeah, that it is. Sorry, terminology mess up heh heh
I just wanted to let Mansour know that MD5 is not really safe either unfortunately

[Zachery]

Its nearly impossible to get the exact data from an MD5 hash, if you really want to hash that data securly take a look at how vBulletin does it