544960 - Does not find Public Key ... S/MIME > View Security Information > Status "Not Found"

Status: RESOLVED DUPLICATE of bug 531073

(Thunderbird :: Security, defect)

Description

[bugzilla.mozilla.org]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20100111 Thunderbird/3.0.1

I mail regularly with other people encrypted via S/MIME certificates.
This works well with all of them but one recipient.

When I want to send an email to this special recipient I always get the following error-message:
"Sending of message failed.
You specified encryption for this message, but the application failed to find an encryption certificate for [e-mail]."

Then:
1) I go to [Tools > Options > Advanced > certificates > view certificates > People]
2) In this list I delete the certificate (public part) of this recipient
3) I open any mail
4) I open a signed email of this recipient => Public part of certificate is stored in Thunderbird
5) I open another email of someone else
6) I send an encrypted email to this recipient

If I wait 1-2 Minutes it is not possible to send an encrypted email to this recipient anymore. Then I delete the certificate again and open a signed email again and it is possible to send an encrypted email again for a short time.

The strange thing is that in [S/MIME > View Security Information > Message security > Status] it displays "Not found" although the certificate is displayed in the list of certificates of other people.

This certificate is not expired.

I know this bug sound a bit strange.
But as I already told above I can reproduce it very easily.
But only with this special recipient.

Reproducible: Always

Steps to Reproduce:
Described above
Actual Results:  
Certificate is not found when email shall be encrypted.
But certificate (not expired) is displayed in certificate list of other people.

Expected Results:  
Certificate is recognized/found and email is sent encrypted

--

Comment 1

[bugzilla.mozilla.org]

I know this sounds quite strange and is probably not that easy to reproduce.
But the root of this issue is not a maloperation. I have this strange behavior only with one of 4 certificates.

Is there a way how I can record a trace/log or post some more debugging information to help you guys identify the root of this issue.

Comment 2

[bugzilla.mozilla.org]

The above mentioned error message "Sending of message failed..." also occurs if 2 certificates of the same recipient are to be found in the certificate manager and one of them is expired:
[Tools > Options > Advanced > certificates > view certificates > People].

Like I already mentioned above I am willing to help.
Is there a way how I can record a trace/log or post some more debugging information to help you guys identify the root of this issue.

Comment 3

[Ludovic Hirlimann [:Usul]]

can you check your certs and tell me if you are seeing bug 145376 ?

Comment 5

[bugzilla.mozilla.org]

This cert was only valid for one year - I don't use it anymore.