On 04/26/2012 11:19 AM, Perry Peeters wrote:
We want our Djigzo to PDF encrypt and S/MIME sign
using a Comodo Secure Email certificate
for a specific user (originator).
The Key Usage of the certificate shows: "keyEncipherment, digitalSignature".
Unfortunately the certificate for this user shows up in Djigzo as encryption certificate
not as signing certificate
and I can't unassign / reassign.
Also I can't assign the certificate as signing certficate.
Because of this setup emails are S/MIME encrypted not signed, not what I want.
Is there a solution ?
A key can be used as a signing key if you have the private key and if
the key usage allows the key to be used for signing. A (public) key can
be used for encryption if the key usage allows encryption. Since you
have the private key and the key can be used for signing you can select
the key for signing. Whether or not you can select it as an encryption
key does not matter. First make sure that your email will be correctly
signed. This can be done by deselecting "Only sign when encrypt". Once
you know that your outgoing email will be correctly signed, you can
enable signing of the PDF encrypted email by selecting the PDF advanced
option "Sign email".