[Cryptography] Does PGP use sign-then-encrypt or encrypt-then-sign?

Dominik Schürmann dominik at dominikschuermann.de
Tue Jan 21 17:29:52 EST 2014


Hey,

I am also very much interested in an answer to this question. Just read
http://world.std.com/~dtd/sign_encrypt/sign_encrypt7.html .

Has there been progress from 2001 to today in OpenPGP's standard
regarding this problem?

Regards
Dominik

On 01/21/2014 05:01 PM, Stephan Neuhaus wrote:
> Dear list,
> 
> I'll be darned if I can find in RFC4880 how to do both encryption and
> signature in OpenPGP.  Knowing that both naively doing sign-then-encrypt
> and encrypt-then-sign have their problems, surely it can't be that,
> right?  So what *is* actually happening in OpenPGP?  And where does it
> say that in the RFC?
> 
> Fun,
> 
> Stephan
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