Re: Is this secure

Gef.Mongoose@xxxxxxxxx wrote:
Ray Booysen wrote:
Gef.Mongoose@xxxxxxxxx wrote:
Ray Booysen wrote:
Gef.Mongoose@xxxxxxxxx wrote:
Ray Booysen wrote:
Gef.Mongoose@xxxxxxxxx wrote:
What would be considered a secure way to store passwords?

Paul

Hi Gef

I use SHA1 to hash my passwords. When a user is created on my site, his
password prefixed with a randomly generated salt and hashed with SHA1.
Both the hashed password and salt are stored in the database.

When the user logs in, his password is sent to the SQL server in plain
text through a stored proc and the stored procedure returns whether it
is correct or not, the salt and hash never leave the database once there.

If the user changes their password a new salt is generated and stored
again in the database.

Hope this helps.

Regards
Ray
Hi Ray,

I've created a class to create a random salt, use it with a password
to created a salted hash and then put it and the salt into the db.
I'm curious as to what stored proc you use to validate a login
password. When the user wishes to log in, they will supply their
password, but then i'd need the salt to create a saltedhash to compare
against the one in the database. Wouldn't this mean pulling the salt
for the uer out to create the saltedhash?

Paul

For the case of authenticating, the user name and password is passed to
the database. In the stored proc, the password is salted with the
stored salt and hashed. Then this hash is compared to the stored hashed
password. If they are the same, you can pass back true or 1 or whatever
you want.

Let me know if you need any other info! :)

Regards
Ray
Hi Ray,

Thanks for the answers :). I'm currently using MySQL server with this
project, and it doesn't contain any functionality for hashing etc (as
far as I am aware anyway). So this means I would have to create the
hash outside the DB. Would pulling the salt out to create the salted
hash when a user tries to log in create any huge security risk? (I
can't see another way of doing this with MySQL server - but i'm still
learning so i might have missed something).

Paul

MySQL can create the hashes for you, the functions are built in. E.g.
SELECT MD5(FullName) FROM Customer will create a hash for you. The SHA
hash functions also exist.

I suppose unless you're using the latest version, you won't have access
to stored procedures.

Its not really a security risk as the highest risk there would be the
transfer of the salted hash and the salt from the database. All the
processing will happen server side and shouldn't be too much of a
problem. (I'm sure the more paranoid of the forum will quickly say
differently. ;) )

Hope this helps.

Regards
Ray

Thanks again Ray :).
I am using MYSQL5, and tried looking through the online manual for
hash functions but couldn't seem to find any. I'll take another look.

Thanks again, you've been a huge help :)

Paul


Sure thing! :)
.

Relevant Pages

  • Re: Is this secure
    ... I use SHA1 to hash my passwords. ... Both the hashed password and salt are stored in the database. ... but then i'd need the salt to create a saltedhash to compare ...
    (microsoft.public.dotnet.framework.aspnet)
  • Re: Is this secure
    ... I use SHA1 to hash my passwords. ... Both the hashed password and salt are stored in the database. ... but then i'd need the salt to create a saltedhash to compare ...
    (microsoft.public.dotnet.framework.aspnet)
  • Re: Simple VB.NET Web Application Encryption/Decryption of password
    ... It looks like Michael answered your second question. ... contains a hash and salt, you would return a byte array containing the hash ... SQL 6.5 (it depends on some database settings, ...
    (microsoft.public.dotnet.security)
  • Re: Is this secure
    ... What I do in my business layer I get the salt, then I use my custom classes ... to hash the passed in password then send the Hash to a Stored Proc to ... Both the hashed password and salt are stored in the database. ... but then i'd need the salt to create a saltedhash to ...
    (microsoft.public.dotnet.framework.aspnet)
  • Re: Can Kerberos be cracked??
    ... Subject: Can Kerberos be cracked?? ... A "salt" is a "random" value that is appended to the ... possible for you to dictionary-crack my password unless you know the ... >> In order to get the hash you would need to launch a brute force attack ...
    (Focus-Microsoft)