As a follow up.   Is this legal?

 

{

  Header: <alg:"direct", enc:"AES-GCM"},

  IV: ., tag:., payload:.

}

 

Or is the line

 

Recipients:[{}],

 

Required?

 

From: Richard Barnes [mailto:[email protected]] 
Sent: Tuesday, July 23, 2013 5:04 AM
To: Mike Jones
Cc: Jim Schaad; [email protected]
Subject: Re: [jose] Question on enc location

 

In which case, it seems like it should be in the top level header, to avoid
having it repeated every time. 

 

In general, it seems like there are "content" parameters (e.g., enc, zip,
cty) that should go at the top level, and "key" parameters that should be
per-recipient (e.g., alg, epk, salt).  It would be helpful to implementors
to be clear about what goes where. 

 



On Monday, July 22, 2013, Mike Jones wrote:

No - just that the "enc" field for all recipients be the same.

 

From: [email protected]
<javascript:_e(%7b%7d,%20'cvml',%20'[email protected]');>
[mailto:[email protected]
<javascript:_e(%7b%7d,%20'cvml',%20'[email protected]');> ] On Behalf Of
Jim Schaad
Sent: Monday, July 22, 2013 4:33 PM
To: [email protected] <javascript:_e(%7b%7d,%20'cvml',%20'[email protected]');> 
Subject: [jose] Question on enc location

 

Is there supposed to be a requirement in the JWE specification that the enc
field be in the common protected (or unprotected) header and no in the
individual recipient header information?

 

Jim

 

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