Re: OpenPGP CFB Mode

Tankred,

You should be able to implement OpenPGP's CFB mode atop the existing CFB
mode fairly easily. There shouldn't be a need to include it as a 'special'
mode. Have you tried?


On Tue, May 6, 2014 at 3:40 PM, Tankred Hase <tankred@whiteout.io> wrote:

> Hi,
>
> I'm a contributor to OpenPGP.js and the libraray uses the OpenPGP CFB
> Mode (http://www.ietf.org/rfc/rfc4880.txt 13.9.)
>
> Here's the corresponding js code that I would like to replace with the
> native implementation from the web crypto api:
>
> https://github.com/openpgpjs/openpgpjs/blob/e1dffffe8d8e367230e920f3ec5bacda56c0a7d3/src/crypto/cfb.js#L87
>
> As far as I understand CFB mode is currently not supported in the
> current spec. I was wondering if this requirement is too specific or
> if it would make sense to add it to the spec, considering PGP is a
> common use case for email. Thanks!
>
> Kind regards,
> Tankred
>
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