0
votes
1answer
14 views

What's the standard (or accepted) method to use several encryption subkeys in GPG?

I would like to create for myself an offline main key with three subkeys. for signing for encryption on standard computer which I hope to be able to secure better for encryption (and consequently ...
1
vote
0answers
14 views

Emacs Gnus email decrypt smime without openssl

I use gnus for my email. Every once in a while, I receive an encrypted email; when I answer "yes" to Gnus offer to decrypt it, it responds smime-verify-region: No CA configured. Now, my workplace ...
1
vote
1answer
124 views

How to use PGP private key with K-9 Mail on Android 4.x

Where do I copy which file from my OpenPGP installation on Ubuntu 14.04 on my Android 4.0 device to be able to import it into APG which is the en-/decryption provider I use in the K-9 Mail client?
0
votes
0answers
40 views

How to determine if STARTTLS IMAP & SMTP connections are encrypted

I use Thunderbird to connect to an IMAP and SMTP server. This works on the port numbers usually associated with unencrypted mail, but I have specified STARTTLS and am told that the servers enable ...
0
votes
1answer
86 views

Encrypted mail is rejected by mailserver

I started sending mail encrypted with openPGP (Thunderbird + Enigmail) this month and it has worked perfectly for several weeks. Today I attempted to send an encrypted message, but received this ...
0
votes
1answer
28 views

GnuPG: Get Public Key/Fingeprint from Encrypted mail

I have received a GnuPG encrypted mail which i cant decrypt: -----BEGIN PGP MESSAGE----- Charset: ISO-8859-15 Version: GnuPG v2.0.20 (MingW32) Comment: Using GnuPG with Thunderbird - ...
1
vote
0answers
125 views

S/MIME email Public Certificate?

Is there a way to create a public certificate for a S/MIME email certificate? I would like to share the public key on my website so people can send me encrypted emails. However I can only find ...
1
vote
1answer
3k views

Cannot send encrypted message to others using Outlook 2010

I am unable to send encrypted messages to others in Outlook 2010. I get the following error: "Microsoft Outlook had problems encrypting this message because the following recipients had missing ...
0
votes
0answers
34 views

Mailinglists in Thunderbird with S/MIME

I am looking for a solution to send encrypted mails to a (internal) mailinglist. To encrypt the mail to all the recipients, I need some way to tell Thunderbird what the recipients are. I was hoping ...
1
vote
2answers
215 views

How can you let mutt encrypt mails in the sent-mail folder?

When i sent an encrypted mail, i was surprised that the copy in sent-mail was not encrypted. Checking with a testmail, the mail is sent encrypted, but the copy in the sent-mail folder is plain text, ...
0
votes
0answers
81 views

Does SMIME encrypt the subject matter?

I've recently acquired an SMIME certificate and installed it in Outlook 2013. I set my brother up to do the same. So I used his certificate to send him an encrypted mail. He had an out of office ...
2
votes
1answer
2k views

Thunderbird: SSL/TLS vs. STARTTLS

Following up this question on serverfault "Is STARTTLS more safe than TLS/SSL?" it came up that the question is rather a question about Thunderbird and not about the actual protocols. Also, if you ...
0
votes
1answer
120 views

Thunderbird + S/Mime, Ecnryption Selection?

As can be seen here and here, Thunderbird does not offer an option to select a more modern encryption algorithm than 3DES when sending S/MIME encrypted mail. Is there any way to change this by using ...
2
votes
3answers
235 views

Is it possible to associate a secondary email address with an existing *public* key?

For example, if I have a friend's public key that's associated with, say, email address john@domain.com, but I want to send him a message at john@other.net, is there a sensible way to do this? Is ...
0
votes
1answer
40 views

Encrypt attachements in Outlook

We have received new requirements from our customers that all files we attach e-mail must be encrypted with a password. The actual text of the e-mails do not need to be encrypted. Some of our ...
7
votes
1answer
2k views

PGP encrypt single message for multiple recipients

Is it possible to encrypt a message using PGP so that multiple recipients (each with their own public private keypair) can decrypt it? I'd like to email one message which can be decrypted by each ...
-2
votes
1answer
76 views

How to automate email server testing with Outlook 2010 [closed]

I am fiddling with a home-built email encryption device. I'm sending email with Outlook 2010 from a local email address to my Yahoo webmail to test. I'm doing this quite a lot as I fool with the ...
1
vote
0answers
187 views

If I send an encrypted message using Apple Mail, are the attachments also encrypted?

A while ago, I'd tested this by sending myself an email with a file attached, then opening it in a web-based client. What I saw was a blank message with a single smime.p7m attachment. I assumed this ...
-3
votes
2answers
270 views

Best practice for sending encrypted archives over email [closed]

At times, I send emails with attached documents that contain sensitive data. I learned recently that the policy is to create an encrypted archive that contain such documents. As a result, I have seen ...
2
votes
1answer
79 views

How do you deal with PGP + Drafts in Thunderbird?

I'm having trouble trying to setup a secure email client. I have marked an option to always encrypt emails by default. But they only get encrypted right before being sent, so sometimes a draft is ...
3
votes
2answers
853 views

Mutt with GPG Password Protection

I got Mutt working with the default IMAP password management configuration with this line in my config: set imap_pass = XXXX Which is obviously not secure. I looked at this ...
3
votes
2answers
140 views

Send private file to newbie

There are a lot of ways of transfer a file in a secure way, but it's difficult to find a way of doing it which is newbie-friendly. For instance, suppose that Alice wants to send a confidential file ...
2
votes
1answer
170 views

In what real-life environments is GPG email signing used? [closed]

I've been using e-mail for over a decade in a regular business environment, but I can not remember having seen any invitation from anybody to GPG sign my e-mails (or somebody who offered to send ...
1
vote
0answers
337 views

How can I make an encrypted email message into a .p7m file?

This is a bit complicated, so I'll explain what I'm really trying to do here: I have a Debian server, and I want to automatically email myself certain logs every week. I'm going to use cron and a bash ...
1
vote
1answer
205 views

How to encrypt email with recipient's key?

I need to send an encrypted email to someone who has published his key. He doesn't have mine, so instead of encrypting the email with my private key as usual, I think I have to use his public key. ...
0
votes
1answer
3k views

Microsoft Office Outlook Web Access - “The content cannot be displayed because the S/MIME control is not available”

I am using Microsoft Office Outlook Web Access on my Google Chrome internet browser. When I try to open someone's email, there is a warning icon that states: "The content cannot be displayed ...
2
votes
1answer
373 views

Outlook, S/MIME, IMAP and Cert Expiration

How does outlook handle encrypted IMAP-Mails after the certificate/key the mail has been encrypted with expires? To still read the e-mail, that is encrypted on the IMAP-Server, I would need the ...
1
vote
1answer
88 views

Encrypted email archive with encryption on client, not server

Even though most of my email is coming in un-encrypted, I want to store it on a server somewhere in encrypted form. Is there any solution available that encrypts on the client so that a compromised ...
0
votes
0answers
77 views

Workaround to get “McAffe Email Encryption” to just send me an email?

My local city government uses "McAffe Email Encryption". It's not a simple click-to-verify or a greylist or a CAPTCHA. After sending an email requiring a simple response I get an email to sign up for ...
1
vote
2answers
162 views

Sending Password Safe files per unencrypted mail secure enough?

I use Password Safe with portable key files ( http://passwordsafe.sourceforge.net/ ) for storing my passwords. Unfortunately, I've forgotten the files at home today and right now I need one of the ...
7
votes
2answers
763 views

Why don't email clients encrypt our mail by default? [closed]

jwz - Netscape 4.0 was not my fault. During that dark period, I worked with Lisa Repka on S/MIME, Netscape's implementation of the then-new standard for cryptographically secure email. At the ...
1
vote
1answer
311 views

Store personal certificates encrypted in Windows?

I recently got my self an email S/MIME signing/encrypting certificate. I installed this on my Windows machine, which, obviously, required me to enter the password I used to encrypt the certificate, ...
0
votes
2answers
498 views

PGP Encryption Proxy for Mail Server

I have a friend who is located in a part of the world that makes email encryption prudent for them. While I recommended OpenPGP, my friend thinks that it would have too high of a setup requirement for ...
8
votes
2answers
2k views

S/MIME capable mail application for OS X

Is there a mail application for Mac OS X with S/MIME support and keychain integration other than Apple's Mail.app? Thunderbird has S/MIME but no keychain access (please correct me). MailMate has ...
1
vote
0answers
355 views

Automatically Encrypt And Forward An E-mail

I'm looking for some mechanism to receive e-mail, automatically encrypt it and forward to another e-mail address. Essentially, I want to this new e-mail address to be an 'off-site backup' of all my ...
10
votes
1answer
3k views

How does S/MIME differ from PGP/GPG, for the purpose of signing and/or encrypting email?

In addition to the titular question, are the two technologies compatible? If so, under what circumstances? What are the relative benefits of the two technologies?
0
votes
1answer
408 views

How can I avoid putting my e-mail password in plain text in my `.fetchmailrc` file?

How can I avoid putting my e-mail password in plain text in my .fetchmailrc file? My file looks like this: poll pop.XXX.com with proto POP3 user 'abc' with password 'PASSWORD' there is foobar here ...
6
votes
3answers
720 views

saving and searching encrypted mail

I often send and receive gpg-encrypted mail. At the moment I use thunderbird + enigmail (in linux) to do that. As far as I know there is no way in thunderbird to find all encrypted messages which ...
0
votes
1answer
64 views

Automated encrypted backup to email

I have some sensitive data (about 3 Megabytes) on a computer running Windows that I want to backup regularly to a different computer. The computer with the data on it will be used by someone else, the ...
1
vote
1answer
413 views

How do I create encrypted backups of gmail (or any other email) via IMAP client (e.g. Thunderbird)

This question is regarding the use of Thunderbird (or other IMAP clients) and suggested backup and encryption tools, not Gmail. I have Thunderbird setup to access an email account via IMAP (in this ...
1
vote
2answers
1k views

Is there a guide to setting up Mozilla Thunderbird to use my GPG keys to sign and/or encrypt email messages on Windows?

I see instructions on websites and questions here about using GPG keys with Thunderbird in Linux, but nothing on Windows. I have GPG, Kleopatra, and Thunderbird 3 installed on Windows, I made my GPG ...
2
votes
5answers
380 views

What's a good way of sharing documents securely between two parties, without having a web server of my own?

I am looking to share sensitive documents but I don't want to send them over email. Because the document is visual, I don't care to send it via FAX either, since it won't reproduce well. Is there a ...
2
votes
4answers
681 views

How to encrypt a POP/SMTP connection?

I'm getting my email by SMTP/POP3 to my local ISP provider like that : email client <--- unencrypted cx ---> POP/SMTP server "cx" stands for connection. That provider doesn't support ...
4
votes
2answers
200 views

Understanding encryption Keys

I'm really embarrassed to ask this question but its the fact that I don't know anything about encryption. I always avoided it. I don't understand the concept of encryption keys (public key, private ...
1
vote
2answers
790 views

Is there an equivalent to Enigmail for Mail.app?

I like using Mail.app, but I'd also like to have encryption/signing options. Is there a Mail.app plugin like Enigmail for Thunderbird? I'm on Snow Leopard.
7
votes
2answers
4k views

Integrate GnuPG with Outlook

I want to integrate GnuPG with Outlook in such a way that when it receives an email, it must automatically decrypt the mail using my private key and display on-screen.
1
vote
3answers
425 views

Is there any free end-to-end encrypted email service? [closed]

Any service like HushMail or CryptoMail?
1
vote
2answers
708 views

Message signing/encryption with Thunderbird and Kleopatra

How do I make Thunderbird use my certificates stored in Kleopatra (KDE)? When I try to import certificates it says it's looking for PKCS12 files, but I can't find any. I'm not sure where Kleopatra ...
4
votes
1answer
641 views

Who knows an alternative to thawte's discontinued personal mail certificate service?

Here's the news: Thawte delivered the message about stopping it's free mail certification a week ago (by means of an an unsigned email). StartSSL offers similar service, as well as CA Cert. But I ...
9
votes
10answers
709 views

Is email encryption practical enough?

All emails I have ever sent were sent as plain text. Like postcards, everybody on the way to the addressee could easily read and store them. This worries me. I know privacy is something of the past, ...