-5
votes
1answer
141 views

How to decrypt the encrypted data, in SHA256, of mysql database? [closed]

I have some data in column of table of mysql database in the encrypted form applied with SHA-256. How to decrypt that data using Java. I stuck at this since 4 days. Please spend 5 minutes of your ...
1
vote
4answers
206 views

Protecting Password in Code

I am writing a program in Processing (which is basically java), that (amongst other things) downloads files from a FTP Server. To connect to the Server the program needs the correct FTP-password, ...
1
vote
1answer
54 views

Storing encryption passphrases in memory in Dalvik?

Given KeePassDroid, I'm considering some of the security implications of accessing KeePass databases on an Android device. In the native applications for Windows, OSX, and Linux, whenever the ...
3
votes
1answer
460 views

Decrypt Passwords based on using a user's password

I am creating a database to store our client's information at work (a heritage center specializing in DNA based genealogy). Once the results of a test come back, we have people that use the ...
1
vote
4answers
159 views

How to store passphrase in this situation?

How to store a passphrase with a Java application that periodically needs access to its plaintext form? It is a strange situation, but I am wedged in it. If providing a decent security mechanism is ...
3
votes
1answer
576 views

Salt usage for Spring security?

I use the Spring security for Java web applications and I have written an authentication provider which is working without salt and now I want to either add salt or alternatively use the built-in ...
1
vote
2answers
489 views

What is the safest way to store a password in a single file?

I've been reading about it. This article helped me a lot. But the more I read the more complicated it seems. For example: Is it better to use bcrypt, or PBKDF2, sha2 or something else for the salt? ...
4
votes
1answer
266 views

Saved passwords (use case)

I have a program in which a user enters a password, and the user data is stored encrypted using AES-128. The data and passwords must be stored together. Both the data and the password are encrypted ...
5
votes
1answer
1k views

Practices for storing username/password in Web applications

I have read the following question: Storing password in Java application but I don't find the answers useful for my case. So here is my question somehow related to that. I have a Java Web application ...
4
votes
3answers
2k views

Reverse-engineering one-time passwords for two-factor authentication systems

Given a one-time password generator that is time-based (such as Google Authenticator), how many instances of (time, PIN) pairs would one need to significantly weaken the algorithm to a point where one ...
3
votes
1answer
442 views

Best security algorith for storing passwords [duplicate]

Possible Duplicate: Which password hashing method should I use? I want the best cryptography algorithm for storing passwords in database, which one should I use and how can I implement ...
18
votes
3answers
5k views

Deleting a Java Object securely

I know that in order to delete a Java object I should use character array instead of String, since I can safely erase (rewrite the character array with other data) its content. This seems not to be ...
4
votes
3answers
6k views

What password-based encryption to use with standard Java 6?

Which password-based encryption method should I use in Java 6? It should be as strong as possible, but work with the default security policy file (not the export restricted one which you have to ...
5
votes
2answers
2k views

Reference implementation of C# password hashing and verification

Does anyone have a reference implementation (ideally 3rd party certified, or government approved) way one-way hash a password for C# and or Java? Ideally,I'd like to see something that includes a ...
3
votes
2answers
517 views

BlackBerry client authenticating to Java Web Service

I already asked this question at StackOverflow here: http://stackoverflow.com/questions/4970681/blackberry-app-security and was directed to this site, can anyone pitch in as to how I can solve this ...