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Old 03-22-2008, 02:04 AM
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Using Java To Implement RSA Algorithm
Hi I'm looking for SOME advice on how to simulate the following:

http://i71.photobucket.com/albums/i1...pinate/RSA.jpg

http://i71.photobucket.com/albums/i1...inate/RSA2.jpg


Ive done this so far:


Code:
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 < numeric.length; counter++){ for(int i = 0; i < StartSymbolic.length; i++) { int temp = numeric[counter]; P3 = (long) (temp*temp*temp); P3mod33 = P3%33; C7 = (long) (P3mod33*P3mod33*P3mod33*P3mod33*P3mod33*P3mod33*P3mod33); int tp = numeric[counter]; C7mod33 = C7%33; } System.out.println("*******************************************"); //System.out.println(StartSymbolic[i]); System.out.println("Numeric: " + numeric[counter]); System.out.println("P3: " +P3); System.out.println("P3mod33: " + P3mod33); System.out.println("C7: " +C7); System.out.println("C7mod33:" + C7mod33); // System.out.println(StartSymbolic[i]); System.out.println("*******************************************"); } } }

Code:
Output: ******************************************* Numeric: 1 P3: 1 P3mod33: 1 C7: 1 C7mod33:1 ******************************************* ******************************************* Numeric: 2 P3: 8 P3mod33: 8 C7: 2097152 C7mod33:2 ******************************************* ******************************************* Numeric: 3 P3: 27 P3mod33: 27 C7: 10460353203 C7mod33:3 ******************************************* ******************************************* Numeric: 4 P3: 64 P3mod33: 31 C7: 27512614111 C7mod33:4 ******************************************* ******************************************* Numeric: 5 P3: 125 P3mod33: 26 C7: 8031810176 C7mod33:5 ******************************************* ******************************************* Numeric: 6 P3: 216 P3mod33: 18 C7: 612220032 C7mod33:6 ******************************************* ******************************************* Numeric: 7 P3: 343 P3mod33: 13 C7: 62748517 C7mod33:7 ******************************************* ******************************************* Numeric: 8 P3: 512 P3mod33: 17 C7: 410338673 C7mod33:8 ******************************************* ******************************************* Numeric: 9 P3: 729 P3mod33: 3 C7: 2187 C7mod33:9 ******************************************* ******************************************* Numeric: 10 P3: 1000 P3mod33: 10 C7: 10000000 C7mod33:10 ******************************************* ******************************************* Numeric: 11 P3: 1331 P3mod33: 11 C7: 19487171 C7mod33:11 ******************************************* ******************************************* Numeric: 12 P3: 1728 P3mod33: 12 C7: 35831808 C7mod33:12 ******************************************* ******************************************* Numeric: 13 P3: 2197 P3mod33: 19 C7: 893871739 C7mod33:13 ******************************************* ******************************************* Numeric: 14 P3: 2744 P3mod33: 5 C7: 78125 C7mod33:14 ******************************************* ******************************************* Numeric: 15 P3: 3375 P3mod33: 9 C7: 4782969 C7mod33:15 ******************************************* ******************************************* Numeric: 16 P3: 4096 P3mod33: 4 C7: 16384 C7mod33:16 ******************************************* ******************************************* Numeric: 17 P3: 4913 P3mod33: 29 C7: 17249876309 C7mod33:17 ******************************************* ******************************************* Numeric: 18 P3: 5832 P3mod33: 24 C7: 4586471424 C7mod33:18 ******************************************* ******************************************* Numeric: 19 P3: 6859 P3mod33: 28 C7: 13492928512 C7mod33:19 ******************************************* ******************************************* Numeric: 20 P3: 8000 P3mod33: 14 C7: 105413504 C7mod33:20 ******************************************* ******************************************* Numeric: 21 P3: 9261 P3mod33: 21 C7: 1801088541 C7mod33:21 ******************************************* ******************************************* Numeric: 22 P3: 10648 P3mod33: 22 C7: 2494357888 C7mod33:22 ******************************************* ******************************************* Numeric: 23 P3: 12167 P3mod33: 23 C7: 3404825447 C7mod33:23 ******************************************* ******************************************* Numeric: 24 P3: 13824 P3mod33: 30 C7: 21870000000 C7mod33:24 ******************************************* ******************************************* Numeric: 25 P3: 15625 P3mod33: 16 C7: 268435456 C7mod33:25 ******************************************* ******************************************* Numeric: 26 P3: 17576 P3mod33: 20 C7: 1280000000 C7mod33:26 *******************************************

I was looking to achieve what is shown in the 1st image.

I can get the numeric, P3, P3mod33, C7, C7mod33 to print out but not the symbolic information for some reason?

I want to be able to allow the user to enter in a string then the plaintext and ciphertext can be displayed.

Like this:

String input: SUZANNE

Output:

Plaintext: S U Z A N N E
Ciphertext: 28 21 20 1 5 5 26


Thanks.

Last edited by Floetic : 03-22-2008 at 02:44 AM.
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