ID: 13206
Updated by: heyesr
Old Status: Open
Status: Closed
Bug Type: Feature/Change Request
Operating System: Windows 98
PHP Version: 4.0.4pl1
New Comment:

md5() outputs 32 hex characters. 1 hex character = 4 bits.

32 * 4 = 128 bits.

128 bits / 8 = 16 bytes

Previous Comments:

[2001-09-07 18:32:14] [EMAIL PROTECTED]

It's a feature request regarding the MD5 string function.

The standard MD5 hash algorithm provides a 16 bytes long digest. PHP's MD5, even 
though it says it's "using the RSA Data Security, Inc. MD5 Message-Digest Algorithm", 
is non-standard: gives out a 32 bytes long digest.

I like the MD5 function very much, but I don't like it being described as using MD5 if 
it doesn't act like the standard MD5 algorithm, so my suggestion is that you should at 
least provide an option to choose between "32 bytes digest (non-standard)" and "16 
bytes digest (standard)" modes.

It also would help a lot if source code/reference to PHP's unique MD5 implementation 
(which I can't seem to find ANYWHERE on the net) would be made available.

Thank you in advance,

Dan 'Neurobasher' Gomes


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