i need help in random key generation algorithm and source code in java

[sulochana dasari]

hii frnds need help in the algorithm required for random key generation algorithm and code for my project ........for encrypting the datafile ......and even for decrypting also



thnks ;

[Tim Moores]

What do you have so far, and where are you stuck making progress? If you haven't started yet, what ideas have you had?

[Mohamed Sanaulla]

Hang on, you should be showing some effort. You cannot expect people here to just tell you the algorithm and also give you the code. So if you need someone to do that then you must hire someone to do that.

[Jeff Verdegan]

Hi, and welcome to the Ranch!

It's not at all clear what your requirments are, or what part you're having trouble with. Please TellTheDetails(⇐click) so people will have a better understanding and be better able to guide you.

Also, please UseOneThreadPerQuestion.(⇐click) Posting the same question multiple times leads to fragmented discussions.

https://coderanch.com/t/571137/java/java/help-random-key-generation-algorithm
https://coderanch.com/t/571135/java/java/hii-algorithm-code-encryption-decryption

[Swastik Dey]

https://coderanch.com/t/542412/Streams/java/create-password-protected-file

[Carey Brown]

The book "Core Java 6" (I think it was volume II) had an excellent example of a generate/encode/decode java program.

[sulochana dasari]

Tim Moores wrote:What do you have so far, and where are you stuck making progress? If you haven't started yet, what ideas have you had?

we are thinking to develop a project ... in which on providing a key as an input ...should produce or generate a random key(number) which is used in encryption of a datafile .....could you suggest me any algorithm which is useful or wit any reference book ...please
thank you

[Martin Vashko]

Cryptography is highly complicated subject. It is very easy to mess things up in a single piece of code and compromise the security of the overall solution. To be able to generate safe keys for encryption, you'd need very strong knowledge in cryptography, which you're not going to infer from a single book or internet discussion. If you're interested, you might read how some innocuous shortcomings in the design and use of the Enigma encoding machine helped the allies break the cipher in the WW2.

If you need the encryption to survive a determined attack, you should definitely obtain proper security certificate from a professional company and use that to do the encryption. Somebody (not me) might be able to help you with the details. If this top-notch security is not actually your goal, a simpler solution might suffice. In any case, the Security forum would be probably better suited for the discussion.

[durai pandi]

hii frnds need help in the algorithm required for random key generation algorithm and code for my project ........for encrypting the datafile ......and even for decrypting also

[Ulf Dittmer]

Tim asked a spot-on question way back when:

Tim Moores wrote:What do you have so far, and where are you stuck making progress? If you haven't started yet, what ideas have you had?

[Winston Gutkowski]

durai pandi wrote:hii frnds need help in the algorithm required for random key generation algorithm and code for my project ........for encrypting the datafile ......and even for decrypting also

Durai,

1. Welcome to JavaRanch.
2. Please don't revive old threads to simply re-post the same question. It's called "hi-jacking" - and it's frowned on on almost any site; not just ours.

Winston