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Re: Using encryption with special Unicode characters

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On Mon, 29 Aug 2011 16:11:13 +1000, "Qu0ll" <Qu0llSixFour@gmail.com>
wrote, quoted or indirectly quoted someone who said :

>raw.getBytes()
I suspect someday this method will be deprecated.

 raw.getBytes( encoding ) 

is what you want since the receiver and sender might not have the same
default encoding.

Encryption algorinthms concern themselves with bytes.  So you want  to
deal with strings or chars you have to convert them to bytes, encrypt,
decrypt than turn them back to strings/chars.

The art of converting String to bytes is called encoding, which has
nothing to do with encryption.

See http://mindprod.com/jgloss/encoding.html

You have to know something about the distribution of your characters
to choose an optimal encoding.  The brute force method is to convert
your string into a UTF-16 array of byte pairs.  However that more than
doubles the size of the encrypted bytes over optimal.

You can also compress the string first to get a compact byte string.
This takes more computing time, but reduces the size of the encrypted
bytes.
see http://mindprod.com/jgloss/compression.html
-- 
Roedy Green Canadian Mind Products
http://mindprod.com
The modern conservative is engaged in one of man's oldest exercises in moral philosophy; that is, 
the search for a superior moral justification for selfishness.
~ John Kenneth Galbraith (born: 1908-10-15 died: 2006-04-29 at age: 97) 

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Thread

Using encryption with special Unicode characters "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-08-29 16:11 +1000
  Re: Using encryption with special Unicode characters Mayeul <mayeul.marguet@free.fr> - 2011-08-29 08:56 +0200
    Re: Using encryption with special Unicode characters "Qu0ll" <Qu0llSixFour@gmail.com> - 2011-08-29 17:18 +1000
  Re: Using encryption with special Unicode characters Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-08-29 00:29 -0700
  Re: Using encryption with special Unicode characters Roedy Green <see_website@mindprod.com.invalid> - 2011-08-29 04:29 -0700

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