Compression side channel

Greg Rose ggr at qualcomm.com
Sun Sep 9 21:11:43 EDT 2001


At 12:44 AM 9/9/2001 -0400, Sandy Harris wrote:
>Does using non-adaptive compression save the day?

Huffman coding using a fixed code table is not a bad way to go. You can 
even peek at the characteristics of the input and choose a table based on 
that... having standardised tables for English text, intel machine code, 
MS-word documents, C code, other languages, etc. Fax machines do something 
like this, with a huffman code table conditioned on a set of standard 
documents, but I'm not sure whether it is just a single table or a set of 
"choose one of these".

Greg.

Greg Rose                                       INTERNET: ggr at qualcomm.com
Qualcomm Australia          VOICE:  +61-2-9817 4188   FAX: +61-2-9817 5199
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