Ruby Implementation of RSA Data Security, Inc. MD5 Message-Digest Algorithm

Question

Does anybody know of ruby implementation of RSA Data Security, Inc. MD5 Message-Digest Algorithm defined at https://www.rfc-editor.org/rfc/rfc1321

I found a javascript implementation at https://developer.openx.org/fisheye/browse/openads/branches/2.0/branches/openads-2.0.11/admin/md5.js?r=16584 ... It has a function MD5 which does the encoding. Anything similar on ruby?

Alnitak · Accepted Answer · 2008-12-14 22:34:10Z

6

There's plenty of them here

In fact, you're likely to find one using:

require 'digest/md5'

answered Dec 14, 2008 at 22:34

Alnitak

341k72 gold badges420 silver badges503 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Sanjay Over a year ago

I checked it out, it doesn't seem to have this particular algorithm.

Alnitak Over a year ago

It very likely does have the bog-standard MD5 algorithm. What do you mean?

Sanjay Over a year ago

The algorithm is below (pasted from javascript code) function MD5(entree) ... for (i=0;i<4;i++) ka+=shl(digestBits[15-i], (i*8)); for (i=4;i<8;i++) kb+=shl(digestBits[15-i], ((i-4)*8)); ... s=hexa(kd)+hexa(kc)+hexa(kb)+hexa(ka); return s; digest/md5 does only md5 encoding. This is more complex.

Alnitak Over a year ago

That extra stuff you've found is just hex-encoding the 128-bit result of the MD5 digest. The real MD5 algorithm is found in the stuff I posted.

Alnitak Over a year ago

and BTW, that code at openx.org is broken - it's only good for 7-bit ASCII, so if your text contains byte values < 32 || > 127 it'll produce non-conformant digests.

Collectives™ on Stack Overflow

Ruby Implementation of RSA Data Security, Inc. MD5 Message-Digest Algorithm

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related