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Re: HTTPS data in a form

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Arno Welzel wrote:

> Thomas 'PointedEars' Lahn schrieb am 2016-09-19 um 23:28:
> 
> […] One of the major principles in encryption is that the secret
> has to be protected, not the algorithm.

Utter nonsense.
 
> If the attacker gains access to the client itself, even HTTPS does not
> help […]

Yes.  Non sequitur.
 
>> Checking a username/password then means comparing the hash of the
>> provided username/password against the stored hash(es) *server-side*. 
>> The hash should be computed using a strong hashing algorithm (so _not_
>> plain MD5 or SHA1, but rather the likes of bcrypt [default for
>> password_hash() since PHP 5.5.0] and scrypt with a strong salt [using the
>> default for password_hash() is recommended as of PHP 7.0.0 as the “salt”
>> option was deprecated]).
> 
> Well - the source code of bcrypt for JavaScript is available here:
> 
> <https://github.com/dcodeIO/bcrypt.js/blob/master/README.md>
> 
> Didn't you just say that it is a bad idea to have the source code for an
> encryption method available? ;-)

I said that it is a bad idea to expose the used encryption algorithm *on the 
client*.  Because then the attacker knows the algorithm already and it is 
easier for them to run an attack.

Also, you are having the common misconception that “JavaScript” means 
client-side and unprivileged code.  (Note that the first variant presented 
there is the one for Node.js.)

-- 
PointedEars
Zend Certified PHP Engineer 
<http://www.zend.com/en/yellow-pages/ZEND024953> | Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

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HTTPS data in a form bit-naughty@hotmail.com - 2016-09-15 21:45 -0700
  Re: HTTPS data in a form "J.O. Aho" <user@example.net> - 2016-09-16 07:52 +0200
  Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-17 15:57 +0200
    Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-17 21:17 +0200
      Re: HTTPS data in a form Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-17 17:02 -0400
        Re: HTTPS data in a form "Peter H. Coffin" <hellsop@ninehells.com> - 2016-09-21 11:33 -0500
          Re: HTTPS data in a form Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-23 08:47 -0400
          Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-24 22:11 +0200
      Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-19 21:36 +0200
        Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-19 23:28 +0200
          Re: HTTPS data in a form "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-09-19 23:44 +0200
            Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-19 23:57 +0200
              Re: HTTPS data in a form "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-09-20 19:00 +0200
          Re: HTTPS data in a form Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-19 21:00 -0400
          Re: HTTPS data in a form Stefan+Usenet@Froehlich.Priv.at (Stefan Froehlich) - 2016-09-20 05:59 +0000
            Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-20 15:40 +0200
              Re: HTTPS data in a form "J.O. Aho" <user@example.net> - 2016-09-20 18:39 +0200
                Re: HTTPS data in a form Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-20 14:36 -0400
              Re: HTTPS data in a form Stefan+Usenet@Froehlich.Priv.at (Stefan Froehlich) - 2016-09-20 21:04 +0000
                Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-24 21:58 +0200
                Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-26 19:43 +0200
              Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-23 09:14 +0200
                Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-24 22:00 +0200
                Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-26 19:44 +0200
          Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-20 08:20 +0200
            Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-20 15:41 +0200
              Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-23 09:02 +0200
                Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-24 22:06 +0200
                Re: HTTPS data in a form Arno Welzel <usenet@arnowelzel.de> - 2016-09-26 19:49 +0200
  Re: HTTPS data in a form Richard Damon <Richard@Damon-Family.org> - 2016-09-18 14:22 -0400
    Re: HTTPS data in a form Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-09-19 23:36 +0200
      Re: HTTPS data in a form Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-19 21:03 -0400
  Re: HTTPS data in a form "Peter H. Coffin" <hellsop@ninehells.com> - 2016-09-21 11:29 -0500

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