Re: [cryptography] [Cryptography] Email encryption for the wider public

2014-09-25 Thread Andrew Skretvedt

On 2014-Sep-18 20:39, grarpamp wrote:

On Thu, Sep 18, 2014 at 10:16 AM, Jonathan Thornburg jth...@astro.indiana.edu

business to E-mail me a receipt/confirmation/whatever.)  Getting the
spelling of $spouse's (8-letter, but odd to many people) E-mail correct
over a poor-quality phone connection is hard enough already!


http://en.wikipedia.org/wiki/NATO_phonetic_alphabet

Caveat lack of UTF-8 coverage...


There's enough in there to send hex or octal representations ;-).



smime.p7s
Description: S/MIME Cryptographic Signature
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Re: [cryptography] [Cryptography] Email encryption for the wider public

2014-09-19 Thread Werner Koch
On Fri, 19 Sep 2014 06:57, g...@toad.com said:

 She can send you email at de...@ihtfp.com once, and when your replies
 all come from:

   From: Derek Atkins lkjasdflksdlkjp2338tnlsdfh848492-hds8f...@ihtfp.com

 then when she replies to you, she'll be sending encrypted emails.  But

The same can be achieved with a separate mail header for the key and a
local association of key and mail address for future communication
(which you need for the above scheme also).


Shalom-Salam,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.

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Re: [cryptography] [Cryptography] Email encryption for the wider public

2014-09-19 Thread Givon Zirkind
very good suggestion!  i've been following this thread with interest.  
relevant to a commercial product i am working on.  i thought keeping the 
key in the address book was the most practical idea.  but, you still 
have to exchange the keys.  the biggest problem is the lookup for a key 
in a key server (keystore).  but, automatically sending a separate 
header sounds, er...automatic, transparent to the user.  and lets the 
system do the work.  long, more than 10 digits, unintelligible email 
addresses won't work.  imho.  can't be memorized, even if chunked.  too 
many pieces.


On 9/19/2014 4:31 AM, Werner Koch wrote:

On Fri, 19 Sep 2014 06:57, g...@toad.com said:


She can send you email at de...@ihtfp.com once, and when your replies
all come from:

   From: Derek Atkins lkjasdflksdlkjp2338tnlsdfh848492-hds8f...@ihtfp.com

then when she replies to you, she'll be sending encrypted emails.  But

The same can be achieved with a separate mail header for the key and a
local association of key and mail address for future communication
(which you need for the above scheme also).


Shalom-Salam,

Werner



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Re: [cryptography] [Cryptography] Email encryption for the wider public

2014-09-19 Thread Werner Koch
On Fri, 19 Sep 2014 12:37, givo...@gmx.com said:
 for a key in a key server (keystore).  but, automatically sending a
 separate header sounds, er...automatic, transparent to the user.  and
 lets the system do the work.  long, more than 10 digits,

Actually such a header and an I-D exists for close to a decade

  https://datatracker.ietf.org/doc/draft-josefsson-openpgp-mailnews-header/

Example:

  OpenPGP: id=1E42B367; url=finger:w...@g10code.com

Maybe it can be extended with a use=always parameter.


Salam-Shalom,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.

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Re: [cryptography] [Cryptography] Email encryption for the wider public

2014-09-18 Thread Jonathan Thornburg
On Wed, Sep 17, 2014 at 03:43:29PM +0200, Henry Augustus Chamberlain wrote:
 I propose that we use the local part of the email address to store the
 public key, so instead of henryaugustuschamberl...@gmail.com, my email
 address would be (64 random letters)@gmail.com.

This breaks an E-mail use case that I often use fairly frequently:
I need to read someone my E-mail address over the phone.  (For example,
I've just completed some transaction by telephone, and I'd like the
business to E-mail me a receipt/confirmation/whatever.)  Getting the
spelling of $spouse's (8-letter, but odd to many people) E-mail correct
over a poor-quality phone connection is hard enough already!

ciao,

-- 
-- Jonathan Thornburg [remove -animal to reply] 
jth...@astro.indiana-zebra.edu
   Dept of Astronomy  IUCSS, Indiana University, Bloomington, Indiana, USA
   There was of course no way of knowing whether you were being watched
at any given moment.  How often, or on what system, the Thought Police
plugged in on any individual wire was guesswork.  It was even conceivable
that they watched everybody all the time.  -- George Orwell, 1984
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Re: [cryptography] [Cryptography] Email encryption for the wider public

2014-09-18 Thread grarpamp
On Thu, Sep 18, 2014 at 10:16 AM, Jonathan Thornburg jth...@astro.indiana.edu
 business to E-mail me a receipt/confirmation/whatever.)  Getting the
 spelling of $spouse's (8-letter, but odd to many people) E-mail correct
 over a poor-quality phone connection is hard enough already!

http://en.wikipedia.org/wiki/NATO_phonetic_alphabet

Caveat lack of UTF-8 coverage...
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