Thread View: aus.computers.java
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2 total messages
Started by John
Sun, 10 Oct 1999 00:00
need help in java assignment
Author: John
Date: Sun, 10 Oct 1999 00:00
Date: Sun, 10 Oct 1999 00:00
18 lines
1968 bytes
1968 bytes
I got an assignment which will be due next week, which require encryption service at the server side using JAVA code. I am not sure how to implement such an encryption, is there any method I can use or should import some special class or ...? I am confused. The requirement follows: "The server implements a simple Caesar-like cipher (an example of which is given in Tannenbaum, 3rd Edition, p582) on the usual set of alphabet and punctuation characters. All characters in this set are encoded by shifting their position by thirteen places -- hence this cipher is popularly called "rot13". Control characters need to be handled carefully, but (as a general rule) are not encoded and may be discarded by the client or server. Once again, some care needs to be taken in defining which characters can be removed and which cannot." more detail can be found at http://www.cse.unsw.edu.au/~cs9331/Assignments/project.html. Any advice on how to implement this most appreciated.
Re: need help in java assignment
Author: Hydra
Date: Sun, 10 Oct 1999 00:00
Date: Sun, 10 Oct 1999 00:00
31 lines
2184 bytes
2184 bytes
In article <%oTL3.1530$_4.2805@newsfeeds.bigpond.com>, jywang@bigpond.com barfed... > The requirement follows: > "The server implements a simple Caesar-like cipher (an example of which is > given in Tannenbaum, 3rd Edition, p582) on the usual set of alphabet and > punctuation characters. All characters in this set are encoded by shifting > their position by thirteen places -- hence this cipher is popularly called > "rot13". Control characters need to be handled carefully, but (as a general > rule) are not encoded and may be discarded by the client or server. Once > again, some care needs to be taken in defining which characters can be > removed and which cannot." > more detail can be found at > http://www.cse.unsw.edu.au/~cs9331/Assignments/project.html. > > Any advice on how to implement this most appreciated. EBG13 vf fvzcyr. Nyzbfg nal arjfernqre pna qb vg. There are numorous ways to _implement_ ROT13 but the idea is simple. Get a character from a String, get the character 13 steps to the left and place it back. A -> N, B -> O, Z -> M. You should be able to figure the algorithm out yourself. Nils -- /* * Mail hydra1ms@wxs.nl * "Yours is not to question why, yours is just to do and die" */
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