password-protection

I tried to develop such an app, in the sense I want to lock all the applications in my device with a password whatever I want. But I didn't find any piece of code for the solution. So I developed one by myself and unfortunately it didn't succeed. I found many solutions for locking android devices but, didn't find one for locking an app. Will be glad if you suggest a solution. Amit Gupta I used a background service to check which application is in the foreground (which means that application is being used by the user). Then I check to see whether I need to lock the application or not. To find

I'm in the process of creating a gaming community site that I'm aiming to release to the public soon. Currently, I'm working on passwords and logins. I've only used MD5 before, but I've read about password safety and heard that salting is currently the way to go. Here's my plan: Every user has their own unique salt of 12 random characters (#/¤& etc), stored in the users table. The salt is hashed (using SHA-256) along with the password on registration, and re-hashed on login. How does this sound to you? Anything I can improve? Should I go for SHA-512 and a longer salt, or is this enough? Your

Does anyone know the syntax for this? I've been looking everywhere and all I can find is C++ code for this. I'm trying to password protect an excel file programatically using the System.IO.Packaging namespace. Any ideas? Additional notes: I'm NOT using the Excel interop--but instead the System.IO.Packaging namespace to encrypt and password protect the excel file. If you want an Excel password all you need is something like this: using Microsoft.Office.Interop.Excel //create your spreadsheet here... WorkbookObject.Password = password; WorkbookObject.SaveAs("spreadsheet.xls") This requires Excel

Looking to store usernames and passwords in a database, and am wondering what the safest way to do so is. I know I have to use a salt somewhere, but am not sure how to generate it securely or how to apply it to encrypt the password. Some sample Python code would be greatly appreciated. Thanks. rz. Store the password+salt as a hash and the salt. Take a look at how Django does it: basic docs and source . In the db they store <type of hash>$<salt>$<hash> in a single char field. You can also store the three parts in separate fields. The function to set the password: def set_password(self, raw

How can I programmatically remove a (known) password from an Excel VBA project? To be clear: I want to remove the password from the VBA Project, not the workbook or any worksheets. This has a simple method using SendKeys to unprotect the VBA project. This would get you into the project, so you'd have to continue on using SendKeys to figure out a way to remove the password protection: http://www.pcreview.co.uk/forums/thread-989191.php And here's one that uses a more advanced, somewhat more reliable method for unprotecting. Again, it will only unlock the VB project for you. http://www.ozgrid.com