Mark Knowles > 30-12-2020, 01:18 AM
Mark Knowles > 30-12-2020, 01:30 AM
(29-12-2020, 10:59 PM)MichelleL11 Wrote: You are not allowed to view links. Register or Login to view.(29-12-2020, 08:37 PM)Mark Knowles Wrote: You are not allowed to view links. Register or Login to view.Opinions on Fontana's reasons for enciphering his works could be interesting.
I always thought that John Friedman's discussion of medieval scientific ciphers.
Mark Knowles > 30-12-2020, 01:38 AM
(29-12-2020, 10:59 PM)MichelleL11 Wrote: You are not allowed to view links. Register or Login to view.I am not convinced the VM and Fontana's work share similar motivations.I am not really suggesting the works share similar motivations as they cover quite different topics. My notion is that the motivations for enciphering them might be similar.
Mark Knowles > 30-12-2020, 01:54 AM
-JKP- > 30-12-2020, 02:29 AM
(30-12-2020, 12:59 AM)Mark Knowles Wrote: You are not allowed to view links. Register or Login to view.(29-12-2020, 09:15 PM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.It's a simple substitution cipher. A mnemonic one. It takes 10 minutes to break it.
I don't think it was created for secrecy. It was used in manuscripts that showcase his engineering ideas. I think the cipher is a way to demonstrate his abilities when combined with the engineering diagrams.
Is it your contention that simple substitution ciphers were never used for secrecy? Looking at 14th century diplomatic ciphers it appears that they used simple substitution ciphers for secrecy then.
Mark Knowles > 30-12-2020, 02:54 AM
(30-12-2020, 02:29 AM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.(29-12-2020, 09:15 PM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.It's a simple substitution cipher. A mnemonic one. It takes 10 minutes to break it.If you had actually read my blog, all of it, you would have seen me mention that Fontana WROTE A BOOK on mnemonic strategies and ways to arrange letters (Secretum de thesauro experimentorum ymaginationis hominum).
Mark Knowles > 30-12-2020, 03:00 AM
(30-12-2020, 02:29 AM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.(30-12-2020, 12:59 AM)Mark Knowles Wrote: You are not allowed to view links. Register or Login to view.(29-12-2020, 09:15 PM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.It's a simple substitution cipher. A mnemonic one. It takes 10 minutes to break it.
I was not implying that substitution ciphers were never used for secrecy.
(30-12-2020, 02:29 AM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.If you had actually read my blog, all of it, you would have seen me mention that Fontana WROTE A BOOK on mnemonic strategies and ways to arrange letters.I have already discussed with you your mnemonic theory of Fontana's cipher symbols and expressed my opinion that you overstate the "mnemonic" nature of the cipher symbols.
-JKP- > 30-12-2020, 03:07 AM
Mark Knowles Wrote:So do you disagree with John Friedman in the article Michelle cites?
davidjackson > 02-01-2021, 10:25 PM
davidjackson > 02-01-2021, 10:28 PM