mcrypt decryption problem

[mark hurty <hurty@mac.com>]

I have been trying to set encryption using the mcrypt module. 
Everything seems to work, until the decrypt step, where only the first 
8 characters of the encrypted string are decrypted. Here's the code I'm 
using to encrypt:

> $mcrypt_key = "24 character key goes here";
> $mcrypt_module = mcrypt_module_open(MCRYPT_TripleDES, "", 
> MCRYPT_MODE_CBC, "");
> srand ((float) microtime() * 1000000);
> $mcrypt_iv = mcrypt_create_iv(mcrypt_get_iv_size($mcrypt_module), 
> MCRYPT_RAND);
> mcrypt_generic_init ($mcrypt_module, $mcrypt_key, $mcrypt_iv);
> $art = mcrypt_generic($mcrypt_module, $art);
> $art = base64_encode($art);
> $mcrypt_iv = base64_encode($mcrypt_iv);
> mcrypt_generic_end ($mcrypt_module);

The data is stored in a mySQL database, then retrieved later.

To decrypt:

> $mcrypt_key = "24 character key goes here";
> $mcrypt_module = mcrypt_module_open(MCRYPT_TripleDES, "", 
> MCRYPT_MODE_CBC, "");
> $art = base64_decode($art);
> $mcrypt_iv = base64_decode($mcrypt_iv);
> mcrypt_generic_init ($mcrypt_module, $mcrypt_key, $mcrypt_iv);
> $art = mdecrypt_generic($mcrypt_module, $art);
> mcrypt_generic_end ($mcrypt_module);

Only the first 8 characters of the encrypted string are decrypted 
properly.

--
mark hurty  |  mark@hurty.com  |  309.764.0911


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