salt

Have I missed anything? Are there any additional steps storing passwords to the DB? Storing the Password: After as much research on the subject as possible I've come to the conclusion that the best way to store user passwords in a web application DB (in my case MySQL+PHP) is as follows: Assign a sitewide static salt. (16 rand chars incl 0-9,a-z,A-Z,[]/*-') Assign a per user random salt (stored in the DB). Store the result hash_function($userPassword + $sitewideSalt + $randomSalt) Store the $randomSalt alongside the resulting hash. Use bcrypt adjustable workload hashing Attack #1: Attacker

I have been looking through ths hashlib documentation but haven't found anything talking about using salt when hashing data. Help would be great. Rakis Samir's answer is correct but somewhat cryptic. Basically, the salt is just a randomly derived bit of data that you prefix or postfix your data with to dramatically increase the complexity of a dictionary attack on your hashed value. So given a salt s and data d you'd just do the following to generate a salted hash of the data: import hashlib hashlib.sha512( s + d ).hexdigest() See this wikipedia article for more details Just add the salt to

I'm trying to add a salt when adding a new user/pwd, but the docs seem to be missing how to do this. Here's a basic example: <authentication-manager> <authentication-provider user-service-ref="userDetailsService"> <password-encoder hash="md5"> <salt-source user-property="username"/> </password-encoder> </authentication-provider> </authentication-manager> You can see by the example that neither a custom salt or custom password encoder is used. So, how would I wire the Salt in when adding a new user/pwd? I'd assume it would be something along the lines of: @Autowired SaltSource saltSource;

Is there a tutorial out there or does anyone have pointers on how to do the following with Spring-Security? Task: I need to get the salt from my database for the authenticating username and use it to encrypt the provided password (from the login page) to compare it to the stored encrypted password (a.k.a. authenticate the user). additional information: I use a custom database structure. A UserDetails object is created via a custom UserDetailsService which in turn uses a custom DAOProvider to get the information from the database. my security.xml file so far: <authentication-manager>

I want to use PasswordDeriveBytes(RSA PBKDF1) of .NET 2.0 within iPhone. How could i achieve the same exact implementation? Are there any methods or libraries for it? I especially want it for using a salt. Thanks Since MS implementation is not totally following the PKCS#5 specification the easiest way would be to convert Mono (C#) source code into Objective C. That will get you very close to MS implementation (everything except a very bad bug :-). In any case I suggest you stick to the specification (don't get more bytes that what it's designed to provide). https://raw.github.com/mono/mono

What are the key differences between these two approaches to generate sequential-but-somewhat-unique numbers? I want to use such a number as a unique user ID inside a MySQL db, and also as a salt to salt a password. My understanding is that for clustering and indexing reasons those IDs should be sequential (I realize that in some cases the random string will make two entries that occurred in the same microsecond non sequential, but hopefully this is negligible.) (scratch this, wrong info, sorry) So yes, as Gumbo pointed out, it's not a hash but indeed a microsecond resolution increasing timer

I need to integrate payU payment gateway in my android app. But when app is trying to to get hash key it gives me error saying that Hash param is missing In demo app there are two option to generate hash if(null == salt) generateHashFromServer(mPaymentParams); else generateHashFromSDK(mPaymentParams, intent.getStringExtra(PayuConstants.SALT)); In demo app there are note saying that hash key generation should be done on server side so I am passing salt as null but Now the question is Which server url I have to use to generate hash? Demo app is using this url https://payu.herokuapp.com/get_hash