java encryption ? PLEASE?

[Original Poster]

hello I just need some help encrypting strings... thats all!! encrypt using a key dont mind what method hopfully a hard to crack one :D AES or swordfish I dont mind please give examples of use :D TY

[El Marto]

http://lmgtfy.com/?q=java+string+encryption&l=1

Enjoy :)

[Original Poster]

http://lmgtfy.com/?q...+encryption&l=1

Enjoy :)

if you are not going to be useful stop insulting my intelligence and get off the forums... Im sick of people like you, I have obviously googled it and I found an ecryption method or two most of which are not any help to me... if i have come to the forums it means google just is not working out

[Asrokhel]

Why not post your question on:

http://stackoverflow.com

Or:

http://www.experts-exchange.com/

[Nick H. Supervisor]

if you are not going to be useful stop insulting my intelligence and get off the forums... Im sick of people like you, I have obviously googled it and I found an ecryption method or two most of which are not any help to me... if i have come to the forums it means google just is not working out

In fairness, you didn't provide too much information in your original post. If you have tried using Google, where did you encounter a problem?

[+Nik Louch Subscriber²]

I have obviously googled it

Based upon...

[geekyscott]

Everyone on this site seems to be so up their own arse. I don't see the point replying with a negative comment when it would take the same length of time to post a positive one. Without people posting the community and effectively Neowin would be dead.

To the OP, take a look at DES encryption: http://www.mkyong.co...d-des-tutorial/.

Also, take a look at : http://www.java2s.co...ecurity/DES.htm

[geekyscott]

Based upon...

I have seen a number of your comments on this board and you come across as a complete 133test tosser. Every one of your posts I have seen seem to be negative, de-constructive and completely unhelpful. Why? Why do you use this board? Neowin markets itself as a friendly community. Not everyone is at the same level, some people are still learning and you should feel privileged that they are turning to Neowin for help rather than stack overflow and the likes (i also find it hilarious someone posted links to another site telling them to ask there). Inst that the bloody point?!

[Nick H. Supervisor]

I have seen a number of your comments on this board and you come across as a complete 133test tosser. Every one of your posts I have seen seem to be negative, de-constructive and completely unhelpful. Why? Why do you use this board? Neowin markets itself as a friendly community. Not everyone is at the same level, some people are still learning and you should feel privileged that they are turning to Neowin for help rather than stack overflow and the likes (i also find it hilarious someone posted links to another site telling them to ask there). Inst that the bloody point?!

I've only just become a moderator so I'm not going to do anything, but if you have a problem with a user you should do it with a PM, not go off-topic in a thread. (Y)

[geekyscott]

I've only just become a moderator so I'm not going to do anything, but if you have a problem with a user you should do it with a PM, not go off-topic in a thread. (Y)

I don't want to be part of this 'community'. Just delete my account thanks.

[Original Poster]

ok here is some more information maybe you can help me ... I have now encrypted the messaged yay.... BUT i want to use a key i have chosen rather then the keygenerator ... i am having some issues with this though can anyone please show me a way to encrypt using my own desired key as I wish to decrypt and my program requires the old corn chicken and fox so encryptions have to be correct and the same

[togermano]

I have seen a number of your comments on this board and you come across as a complete 133test tosser. Every one of your posts I have seen seem to be negative, de-constructive and completely unhelpful. Why? Why do you use this board? Neowin markets itself as a friendly community. Not everyone is at the same level, some people are still learning and you should feel privileged that they are turning to Neowin for help rather than stack overflow and the likes (i also find it hilarious someone posted links to another site telling them to ask there). Inst that the bloody point?!

Well said and because nik posts all the time the owners like him even thou most of his posts are crap and offending other members

I've only just become a moderator so I'm not going to do anything, but if you have a problem with a user you should do it with a PM, not go off-topic in a thread. (Y)

We are sick of it he comes in alot of peoples threads and trashes them.... WHy don't you mods do something about it? If I could tell him off without getting a warning I would.

[SirEvan]

if you are not going to be useful stop insulting my intelligence and get off the forums... Im sick of people like you, I have obviously googled it and I found an ecryption method or two most of which are not any help to me... if i have come to the forums it means google just is not working out

I agree with him however, A simple search for "JAVA AES128 Encryption" on google yields countless working results on how to encrypt strings. Also as mentioned, stackoverflow is a great asset, as is providing more information on what you're trying to accomplish. "HLP MEEZ!" usually does not yield useful answers from the community.

Here's a freebee. Why not tell us if you're just trying to encrypt, such as store in a database, or if you want to encrypt to transmit. One could use AES128, the other would use SSL. Nobody can tell you how to encrypt your strings if you don't tell us the context and how you're using encryption.

Here's your freebee, that took me 2 seconds on google.:

http://www.javamex.c...symmetric.shtml

In case you're wondering how I found this so quickly,

1. Open google. Type in "JAVA AES128 example"
   
2. Click the VERY first result http://stackoverflow...ication-in-java
   
3. Click the 2nd answer:http://www.javamex.c...symmetric.shtml
   
4. ....
   
5. Profit
   

[Original Poster]

I agree with him however, A simple search for "JAVA AES128 Encryption" on google yields countless working results on how to encrypt strings. Also as mentioned, stackoverflow is a great asset, as is providing more information on what you're trying to accomplish. "HLP MEEZ!" usually does not yield useful answers from the community.

Here's a freebee. Why not tell us if you're just trying to encrypt, such as store in a database, or if you want to encrypt to transmit. One could use AES128, the other would use SSL. Nobody can tell you how to encrypt your strings if you don't tell us the context and how you're using encryption.

Here's your freebee, that took me 2 seconds on google.:

http://www.javamex.c...symmetric.shtml

In case you're wondering how I found this so quickly,

1. Open google. Type in "JAVA AES128 example"
   
2. Click the VERY first result http://stackoverflow...ication-in-java
   
3. Click the 2nd answer:http://www.javamex.c...symmetric.shtml
   
4. ....
   
5. Profit
   

i will look at your links thanks for the help ... I am making a 2 way chat client (p2p) and i am encrypting the messages ... but before the chat can be secure I have to get an encryption code to both parties ....

so what i need to do is take and encryption key and encrypt it with a different key ... then send it to person B person B then encrypts the encrypted key with there encryption key... they then send it back ... person A (me) then removes the original encryption placed upon it leaving only person Bs encryption on the key.... person A is then meant to send it back to B so they can remove their encryption to see the shared encryption key so they can talk securely... :)

[SirEvan]

i will look at your links thanks for the help ... I am making a 2 way chat client (p2p) and i am encrypting the messages ... but before the chat can be secure I have to get an encryption code to both parties ....

so what i need to do is take and encryption key and encrypt it with a different key ... then send it to person B person B then encrypts the encrypted key with there encryption key... they then send it back ... person A (me) then removes the original encryption placed upon it leaving only person Bs encryption on the key.... person A is then meant to send it back to B so they can remove their encryption to see the shared encryption key so they can talk securely... :)

Why do you want to encrpyt the actual message? if you use SSL in your p2p app, then the entire communication is encrpyted, and nobody would be able to read the message. This saves you having to:

1.) Share encryption keys

2.) add code/time/complexity to en/decrypt messages each time they get sent.

Why re-invent security when you can easily use an SSL connection between your clients/apps to secure the ENTIRE connection. I asked this same question on stack overflow the other day, as I was thinking of using AES128 to encrypt user names being sent over http. I was later convinced by users to just go with an SSL connection for the entire session.

[Original Poster]

Why do you want to encrpyt the actual message? if you use SSL in your p2p app, then the entire communication is encrpyted, and nobody would be able to read the message. This saves you having to:

1.) Share encryption keys

2.) add code/time/complexity to en/decrypt messages each time they get sent.

Why re-invent security when you can easily use an SSL connection between your clients/apps to secure the ENTIRE connection. I asked this same question on stack overflow the other day, as I was thinking of using AES128 to encrypt user names being sent over http. I was later convinced by users to just go with an SSL connection for the entire session.

SSL isnt as golden as most people think.... if it can be "secured" one end and read the other without any kind of key or both users having an input then I dont trust it there is obviously a way for it to be read sooo its not the level of security i want

[SirEvan]

SSL isnt as golden as most people think.... if it can be "secured" one end and read the other without any kind of key or both users having an input then I dont trust it there is obviously a way for it to be read sooo its not the level of security i want

Uh... perhaps you should look up how SSL works. SSL uses keys, a private and public key.

http://luxsci.com/bl...r-tls-work.html

http://security.stac...w-does-ssl-work

http://www.inet2000..../encryption.htm

unless you have a self signed cert in play, or someone uses a MITM attack to inject they're own known cert into your session, it's pretty damn secure...if it wasn't I don't think the worlds banks and other organizations would be using it. With a 128bit key, there are over 339,000,000,000,000,000,000,000,000,000,000,000 possible key combinations, and would take someone longer than the age of the universe to crack.

Something tells me you should probably learn a little more before messing with this stuff, so that you better understand the technologies you're working with. No offense.