Streams, Voice, and Sensitive Dependence
It is my understanding that the PGP algorithm is primarily intended as a block cypher. Therefore, wouldn't an Outer Block stream cypher be more effective for phone conversations? Both solutions require hardware for a practical (tolerably noiseless) implementation, so there's nothing to be gained by streaming data into a block format. In any case, there has been a lot of recent work in dynamic systems (Chaos), especially in the fast computations of Julia Sets. Has anyone seen a paper on exploiting the sensitive dependance in these systems for pseudorandom number generation?
At 1:53 PM -0500 on 12/4/98, Lee Davis wrote:
It is my understanding that the PGP algorithm is primarily intended as a block cypher.
PGP is not a cipher. PGP is an application with a bunch of ciphers in it, most of the block ones. PGPfone is not a cipher either, it's an applicatoin with a bunch of ciphers in it, most of them stream ones... Cheers, Robert Hettinga ----------------- Robert A. Hettinga <mailto: rah@philodox.com> Philodox Financial Technology Evangelism <http://www.philodox.com/> 44 Farquhar Street, Boston, MA 02131 USA "... however it may deserve respect for its usefulness and antiquity, [predicting the end of the world] has not been found agreeable to experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'
At 2:38 PM -0500 on 12/4/98, Robert Hettinga wrote:
PGP is not a cipher. PGP is an application with a bunch of ciphers in it, most of the block ones. ^them...
...and I'm not even sure about the 'most' part. Could be all of them. Cheers, Robert Hettinga ----------------- Robert A. Hettinga <mailto: rah@philodox.com> Philodox Financial Technology Evangelism <http://www.philodox.com/> 44 Farquhar Street, Boston, MA 02131 USA "... however it may deserve respect for its usefulness and antiquity, [predicting the end of the world] has not been found agreeable to experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'
participants (2)
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Lee Davis -
Robert Hettinga