[Cryptography] Other obvious issues being ignored?

[ianG]

On 20/10/2015 19:47 pm, John Denker wrote:

> *) There is a fundamental principle that says
>       "If you can't encrypt properly, don't encrypt at all.
>        If you send in the clear, you endanger only yourself,
>        in obvious ways, whereas if you misuse the cryptosystem
>        you endanger everybody, in less-obvious ways."


I'm guessing this relates to older military shared key systems where 
misuse of the system could provide substantial clues as to the 
'codenooks' of the day.


>   I forget who is credited with that idea.  It's discussed in
>   Kahn somewhere.


iang