ietf-openpgp
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Re: interop/encryption to pgp2

2001-11-16 23:11:02
On Fri, Nov 16, 2001 at 05:05:25PM -0800, Ingo Luetkebohle wrote:
Hi,

David Shaw just pointed out that PGP2.6.2 chokes when it receives a
message that has been encrypted to a v4 key, even when it has been
encrypted to a v3 key, too. 

I can only assume that this is because public-key encrypted session
key packets allow non-RSA cipher material.  Can anybody who has a
working knowledge of the old code confirm this?

It can also be the size of the key.  V4 RSA keys that are greater than
2048 bits long will cause PGP 2.6.2 to fail with various odd errors.
V4 RSA keys <= 2048 bits long can be mixed in with v3 keys without
causing any problems.

David

-- 
David Shaw          |  Technical Lead
<dshaw(_at_)akamai(_dot_)com>  |  Enterprise Content Delivery
617-250-3028        |  Akamai Technologies

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