1870629 - Thunderbird cannot decrypt S/MIME message with RSA-OAEP encryption from Seppmail

Status: NEW

(MailNews Core :: Security: S/MIME, defect)

Description

[Josef Ender]

Attachment: encryptedMail.eml

Steps to reproduce:

Sent an S/MIME signed E-Mail. Recipient answers through SeppMail Gateway.

Actual results:

Thunderbird cannot decrypt the e-mail. Outlook decrypts it without an issue.

Expected results:

E-Mail should decrypt.

Comment 1

[Josef Ender]

Attachment: Screenshot from same Mail in Outlook

Comment 2

[Magnus Melin [:mkmelin]]

What errror do you get in Thunderbird?

Comment 3

[Kai Engert [:KaiE:]]

Looking at the raw data, I see it mentions "rsaOAEP".

We don't support that yet, that's tracked in bug 215997

Comment 4

[Kai Engert [:KaiE:]]

Josef, could you please send a test email to me?
I'm attaching a test S/MIME certificate (RSA key).
Does this work? Are you able to use it send me an encrypted email using your Gateway?

Comment 5

[Kai Engert [:KaiE:]]

Attachment: testmailkuix-de-chain.pem

Please let me know if you would like me to send a signed S/MIME email to you.

Comment 6

[Kai Engert [:KaiE:]]

Attachment: testmail-signed.eml

This is an email, signed with my test certificate.
You should be able to download it, open it with Thunderbird, copy it to a folder, and then click it, and then TB should show it as a valid signed email. You should be able to send an encrypted reply to it.