encryption: not possible to see who encrypted or signed attachments

[gauteh]

Attachments are just colored depending on encryption and signature state. If someone intercepts an email it is therefore possible to add attachments and make them appear to be signed or encrypted by the same signer as the main part of the message.

Somewhat related to #499.

[mxmehl]

Perhaps related. With WebExt the left-hand bar to indicate the encryption/signing status is ending after the first line. Could have to do with the iframe stuff. Or is it my stylesheet?

[gauteh]

Max writes on July 8, 2018 15:01:

Perhaps related. With WebExt the left-hand bar to indicate the encryption/signing status is ending after the first line. Could have to do with the iframe stuff. Or is it my stylesheet?

Need to add the .encrypted CSS tag sub-definition to the iframe, visualizing which iframe is encrypted.