Comments on: MD5/SHA1 Encryption in PHP vs. MySQL

By: Joseph

Joseph — Fri, 15 Oct 2010 03:54:38 +0000

Thanks for this! What Saviour means is that MySQL will perform its WHERE calculations for each record that it reads. In this case, it is having to perform the SHA1 encryption routine once for each record in the table.

By: SHA1 Speed Differences [PHP vs MySQL] – Part 2 « Saviour's Blog

SHA1 Speed Differences [PHP vs MySQL] – Part 2 « Saviour's Blog — Fri, 25 Sep 2009 22:37:07 +0000

[...] SHA1 Speed Differences [PHP vs MySQL] – Part 2 September 26, 2009 saviourc Leave a comment Go to comments Back again for the second part of SHA1 Speed Differences. Who will win this battle between PHP vs MySQL? This post is a continuation of SHA1 Speed Differences [PHP vs MySQL] – Part 1 directly replying to the post MD5/SHA1 Encryption in PHP vs. MySQL. [...]

By: Karl Agius

Karl Agius — Thu, 24 Sep 2009 22:31:44 +0000

Saviour, indexing digest brings down the gap in the reads close enough to even out the field :)

There is a very tiny advantage in the php digest version, but only a few fractions of a ms, and the reads are faster all around.

Could you clarify what you mean by "MySQL has to go through all records executing SHA1 for each"?

Thanks for the tip and comment!

By: SHA1 Speed Differences [PHP vs MySQL] – Part 1 « Saviour's Blog

SHA1 Speed Differences [PHP vs MySQL] – Part 1 « Saviour's Blog — Thu, 24 Sep 2009 19:50:25 +0000

[...] comment Go to comments Reading my favorite blog, I’ve encountered a rather interesting article discussing the speed difference between PHP and MySQL. The results obtained were suspicious to [...]

By: Saviour Caruana

Saviour Caruana — Thu, 24 Sep 2009 09:04:02 +0000

Karl, can you try this test with the password field 'digest' indexed?

The difference being MySQL has to go through all records executing SHA1 for each.

With an indexed field, the result should probably be the same. My hunch.

By: Karl Agius

Karl Agius — Mon, 21 Sep 2009 20:14:16 +0000

Thanks for your comment Borrellus, glad you found it interesting.

By: Borellus

Borellus — Mon, 21 Sep 2009 14:19:46 +0000

Brilliant post, it was very helpful. Thanks for sharing this =D