[Info-vax] What to do with my VAX.....

[Bob Eager]

On Wed, 11 Nov 2020 21:12:16 -0500, Bill Gunshannon wrote:

> On 11/11/20 8:54 PM, Dave Froble wrote:
>> On 11/11/2020 6:56 PM, Alexander Schreiber wrote:
>>> seasoned_geek <roland at logikalsolutions.com> wrote:
>> 
>>>> ALL ENCRYPTION is security by obscurity. Period.
>>>
>>> Thus proving nicely that you know _absolutely_ nothing about
>>> encryption.
>>> You imight want to read up on Kerckhoff's principle for starters.
>> 
>> Well, I wouldn't be so quick to dismiss that statement.
>> 
>> Isn't not knowing a solution a form of obscurity?  Otherwise, if one
>> knows the key, then there is no security, right?  So not knowing the
>> key is sort of "security by obscurity"?
>> 
>> There have been multiple instances in the past of codes being broken
>> and harmful affects because of that.  The Japanese code in WWII?
>> 
>> What is a "secret key", other than "unknown data"?  Can such a key be
>> guessed?  Unlikely.  But possible.
>> 
> Guess it depends on which part of ENCRYPTION you are talking about. The
> entire algorithm for the Unix Password encryption is documented and
> available for anyone who wants to read it.  No obscurity involved at
> all.  Let me know when you figure out how to reverse the encryption for
> any password.  Brute force doesn't count.

Originally documented in Boris Hagelin's patent, in mechanical form.

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