S/MIME is a standard for public key encryption and signing of MIME data. S/MIME is on an IETF standards track and defined in a number of documents, most importantly RFCs.

learn more… | top users | synonyms

0
votes
1answer
59 views

Apple Mail doesn't show when a mail is encrypted (using S/MIME)

I have recently started using S/MIME since we got a certificate from our school and are advised to use it when possible. I am using El Capitan 10.11.4. The encryption and decryption process ITSELF ...
0
votes
0answers
63 views

Mail will not sign emails with S/MIME cert

[iPhone 6, iOS 9.2.1] I am trying to get emails sent from Mail in iOS to be signed with my S/MIME public key, but I have not been successful at all. I have tried 2 different certs, one from Comodo ...
0
votes
1answer
82 views

Signed messages not appearing properly in Mail on 10.11

I do a lot of work with S/MIME and am very familiar with the standard and the software. Since upgrading to 10.11 (El Captain), S/MIME-signed and encrypted messages have not been appearing as such in ...
1
vote
0answers
63 views

Can I import my S/MIME cert in OSX 10.11.1

I try to create own CA and sign created certificates according to procedure described here: serverfault: Can I Create My Own S/MIME Certificate for Email Encryption? It works perfectly on my Linux ...
1
vote
1answer
55 views

Apple-Mail set S/MIME algorithm

Apple-Mail uses DES-EDE3-CBC and SHA1 for new S/MIME-messages. Nowadays, both algorithms are considered as VERY WEAK and probably crackable by security agencies ore even large botnets. Is it somehow ...
3
votes
2answers
404 views

How can I see if an e-mail is signed in “Mail” (using an Exchange account)?

Usually, a signed message shows a checkmark icon. Clicking on this icon displays the certificate that was used to sign the message: Not so when a message lies in an exchange mailbox, and is ...