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Java Collection Q&A » algorithm » rsa 

1. RSA algorithm library for Java    stackoverflow.com

I want to provide my application with simple licensing mechanism based on RSA algorithm. Are there any free RSA libraries?

2. RSA BadPaddingException : data must start with zero    stackoverflow.com

I try to implement an RSA algorithm in a Java program. I am facing the "BadPaddingException : data must start with zero". Here are the methods used to encrypt and decrypt my ...

3. Cryptography - RSA Algorithm in Java 1.4    stackoverflow.com

I am using Java 1.4.2_10 and I am trying to use RSA encryption: I am getting the NoSuchAlgorithmException for the following code:

cipher = Cipher.getInstance("RSA");
This is the error:
java.security.NoSuchAlgorithmException: Cannot find any provider supporting ...

4. Little glitch in implementing RSA algorithm    stackoverflow.com

I am trying to implement the RSA algorithm, but for some reason my code below doesn't produce correct results (note that only the relevant code is shown).

BigInteger n = ...

5. how can i use encryption algorithm from installed provider on J9 vm?    stackoverflow.com

Hi I am trying to user RSA on J9. The algorithm is offered by the 'J9JCE' provider which is an installed extension(i listed all the existing providers and algorithms and found them) ...

6. Problems encrypting a String using RSA algorithm in Java    stackoverflow.com

I'm trying to adopt RSA algorithm for encrypting String objects, but seems that BigInteger -> String and String -> BigInteger conversions do not work properly. Here's my code:

public class RSAEncryptor {

 ...

7. RSA encryption algorithm in Java: no BigIntegers    stackoverflow.com

I need to implement RSA algorithm in Java. I've found the best solution using BigIntegers, problem is that I need to work only with ints or longs. The encrypting is done ...

8. InvalidKeyException while wrapping and unwrapping using RSA algorithm    stackoverflow.com

I am new to Java and want to wrap a symmetric key using RSA algorithm. In my case I am not generating the public key for wrapping, but retrieving the public ...

9. how to encrypt /decrypt a video file using RSA algorithm?    stackoverflow.com

i want to ask u something about DRM here.i want to encrypt/decrypt a file using RSA algorithm in java.can anyone send the sample code for this.any help is thankful..thanx in advance.. ...

10. RSA_verify Returns zero. with error Algorithm:mismatch    stackoverflow.com

hi can any one tell whats wrong i am doing in this code... I sign the Message using Java IBMFIPS compliant the code to sign the message is

//Signs the hash of each ...

11. Decoding an Ecrypted Message    stackoverflow.com

Im doing my own implementation of RSA algorithm in java. So far i have it working, i want to be able to encrypt a message string eg. "hello" its a very basic version ...

12. Using Java To Implement RSA Algorithm    coderanch.com

Hi I'm looking for SOME advice on how to simulate the following: http://i71.photobucket.com/albums/i140/carpinate/RSA.jpg http://i71.photobucket.com/albums/i140/carpinate/RSA2.jpg Ive done this so far: package RSAalgorithm; public class SecurityAlgorithm { public static char[] StartSymbolic = {'A','B','C','D','E','F','G','H','I','J', 'K','L','M','N','O','P','Q','R','S','T', 'U','V','W','X','Y','Z'}; public static int[] numeric = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 16,17,18,19,20,21,22,23,24,25,26}; public static void main(String[] args) { long P3 = 0; long P3mod33=0; long C7=0; long C7mod33=0; for(int counter = 0; counter ...

13. Using Java To Implement RSA Algorithm    coderanch.com

Hi I'm looking for SOME advice on how to simulate the following: http://i71.photobucket.com/albums/i140/carpinate/RSA.jpg http://i71.photobucket.com/albums/i140/carpinate/RSA2.jpg Ive done this so far: package RSAalgorithm; public class SecurityAlgorithm { public static char[] StartSymbolic = {'A','B','C','D','E','F','G','H','I','J', 'K','L','M','N','O','P','Q','R','S','T', 'U','V','W','X','Y','Z'}; public static int[] numeric = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 16,17,18,19,20,21,22,23,24,25,26}; public static void main(String[] args) { long P3 = 0; long P3mod33=0; long C7=0; long C7mod33=0; for(int counter = 0; counter ...

14. Using Java To Implement RSA Algorithm    forums.oracle.com

15. RSA algorithm implemented in Java    forums.oracle.com

Hi retha, Don't expect anyone to give you the code. However, you can find lots of information on the RSA algorithm on the Internet --- it's just a Google search away. Implementing one from scratch is easy enough. What will probably take time is research into number theory (if you aren't already up to scratch) and the optimization of the calculations ...

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