Vipin, I think the main problem here is that you cannot treat PBKDF2
as a hash in this way. Every time you hash the same password you get a
different result because you are generating a new random salt.
Instead, you need to decode the in database representation to extract
the salt and then do a comparison on the hashed part.

I have this working in a backward compatible way, and I think it is a
good idea so I will be committing it to central shortly.

--
James Taylor, Assistant Professor, Biology/CS, Emory University


On Thu, May 2, 2013 at 2:34 PM, Vipin TS <vipin...@gmail.com> wrote:
>
> Thanks James, I have updated the password of one user in galaxy_user table
> with the new algorithm,
> I also adjusted the function "new_secure_hash" in
> /lib/galaxy/util/hash_util.py in such a way that it returns
> the new hash instead of sha1. Now I tried to login, it fails to get the
> account, I think there is something going
> wrong in the password hash comparison. Can you please assit here.
>
> +++ b/lib/galaxy/util/hash_util.py      Thu May 02 14:33:07 2013 -0400
> @@ -25,13 +25,60 @@
>      Returns either a sha1 hash object (if called with no arguments), or a
>      hexdigest of the sha1 hash of the argument `text_type`.
>      """
> +    import hashlib
> +    from os import urandom
> +    from base64 import b64encode, b64decode
> +    from itertools import izip
> +    from pbkdf2 import pbkdf2_bin
> +
> +    SALT_LENGTH = 12
> +    KEY_LENGTH = 24
> +    HASH_FUNCTION = 'sha256'
> +    COST_FACTOR = 10000
> +
>      if text_type:
> +        #return sha1( text_type ).hexdigest()
> +
> +        sec_hash_1 = sha1( text_type ).hexdigest()
> +
> +        if isinstance(sec_hash_1, unicode):
> +            sec_hash_1 = sec_hash_1.encode('utf-8')
> +        salt = b64encode(urandom(SALT_LENGTH))
> +
> +        return 'PBKDF2${0}${1}${2}${3}'.format(
> +            HASH_FUNCTION,
> +            COST_FACTOR,
> +            salt,
> +            b64encode(pbkdf2_bin(sec_hash_1, salt, COST_FACTOR, KEY_LENGTH,
> getattr(hashlib, HASH_FUNCTION))))
>
>
> thanks, Vipin
>
>
>> That should be the only place, it is called from the some methods of
>> the User model object. So you could modify it to always hash new
>> passwords in a different way, but check old passwords with sha1 first,
>> then something else.
>>
>> Although it might be nice to move the functionality into
>> security.validate_user_input since it is really specific to user
>> passwords, especially with those changes.
>>
>> I'd be happy to see this go into main with sha256 or something
>> similar. Also, we could consider adding a random per-user salt field
>> if you are really concerned about this.
>>
>> --
>> James Taylor, Assistant Professor, Biology/CS, Emory University
>>
>>
>> On Thu, May 2, 2013 at 10:21 AM, Vipin TS <vipin...@gmail.com> wrote:
>> > Hello dev-team,
>> > I would like to add the different type of password encryption to the
>> > users
>> > in my galaxy instance. I started working with the current password
>> > encoding
>> > script:
>> > /home/apps/galaxy-dist/lib/galaxy/util/hash_util.py
>> >
>> > I will keep the current sha1 and add another layer of encryption to the
>> > sha1
>> > hash, otherwise I need to force all my users to change the password and
>> > follow the new hashing method.
>> >
>> > Can anyone please point me any other place/script which I missed
>> > regarding
>> > the encryption/decryption of user authentication.
>> >
>> > thanks in advance,
>> > --/Vipin
>> >
>> >
>> > ___________________________________________________________
>> > Please keep all replies on the list by using "reply all"
>> > in your mail client.  To manage your subscriptions to this
>> > and other Galaxy lists, please use the interface at:
>> >   http://lists.bx.psu.edu/
>> >
>> > To search Galaxy mailing lists use the unified search at:
>> >   http://galaxyproject.org/search/mailinglists/
>
>
___________________________________________________________
Please keep all replies on the list by using "reply all"
in your mail client.  To manage your subscriptions to this
and other Galaxy lists, please use the interface at:
  http://lists.bx.psu.edu/

To search Galaxy mailing lists use the unified search at:
  http://galaxyproject.org/search/mailinglists/

Reply via email to