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Old 07-23-2007, 05:07 PM   #1
Registered: Aug 2004
Location: Bear, DE, USA
Distribution: Slackware 11, CentOS 5.2, Ubuntu
Posts: 124

Rep: Reputation: 17
Php: Smtp-auth Cram-md5

For no other reason than I want to learn, I am writing my own mail class that will enable me to send emails regardless of the existence of a MTA on the web server.

Everything is working beautifully except my authentication mechanism:

PHP Code:
  function cram_md5($in){
$this->username) || !isset($this->password)) return FALSE;
$in explode(' '$in);
$in[0] == '334'){
$ticket base64_decode($in[1]);
$password hash_hmac('MD5'$this->password$ticket);
This function accepts the return value from the server after issuing the AUTH CRAM-MD5 command.

Any help would be greatly appreciated.
Old 02-19-2011, 01:04 PM   #2
LQ Newbie
Registered: Feb 2011
Posts: 1

Rep: Reputation: 0
After 4 years, i don't know if you already need an answer but at least for those like me that needs the answer, here's the answer of your problem:

When you use CRAM-MD5 for authentication, it's the "ticket" given by server that must be "crypted" with the password.

So your call of "hash_hmac" is incorrect...

Here's the good call :
$password=hash_hmac('MD5', $ticket, $password);
I tested it and it works for me...

Last edited by adrenalinedj; 02-19-2011 at 01:06 PM.


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