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en:tp:email:security:google-android

Google Android

Prerequisites

Since the standard integrated e-mail app in Google Android does not support the S/MIME method, e-mail security cannot be increased by signing or encrypting with this app.

Other S/MIME-capable e-mail apps do not support all connection protocols of the e-mail system. A limited use is possible with the app FairEmail, which supports the S/MIME procedure in the Pro version, but can only access the email system of Jade University via IMAP.

Configuration

The first step is to set up the FairEmail email app as an email client:

  • Main Settings tab → Manual Setup and Account Options.
  • Accounts (receive e-mail IMAP POP3) → Add (+ button) → IMAP
  • Provider → User defined
    • IMAP Hostname: mail.jade-hs.de
    • Encryption: STARTTLS
    • Port number: 143
    • Username: domain login (form: ma1150@hs-woe.de)
    • Password: <your password>
    • Account name: <your email address>.
  • Tap the “Verify” button.
  • Add associated identity (SMTP server): enabled.
  • Tap the “Save” button.
    • Associated account: <your email address> (should already be preset here).
    • Your name: <first name last name>
    • Your email address: <your email address>
    • Domain name: please empty the field
    • SMTP hostname: mail.jade-hs.de
    • Encryption: STARTTLS
    • Port number: 587
    • Username: domain login (form: ma1150@hs-woe.de)
    • Password: <your password>
    • Account name: <your email address>.
  • Tap on the button “Save”.

Close the settings and check that the email app is working properly.

The second step is then to increase the email security by signing / encrypting. To unlock these functions, you must purchase the Pro version (Menu → Pro Functions).

  • Settings → Card Encryption
  • General
    • Sign by default: activated
  • PGP
    • Use Autocrypt: deactivated

Close the settings, this completes the configuration.

Use

Sign

  • In the FairEmail App, click on the pencil icon for a new email and compose it.
  • Tap on “Sign”, the “Send” dialogue opens.
    • Under Encryption, select “S/MIME sign only”.
    • Tap on “Send”, the e-mail is digitally signed and then sent.
  • The communication partner sees the loop symbol as a sign of a digitally signed e-mail.

Encrypt

To encrypt an e-mail, you must first have the communication partner's public key. To do this, have your communication partner send you a digitally signed e-mail, for example, which is automatically added to your key ring.

  • Click on the pencil icon for a new email in the FairEmail app and compose it.
  • Tap on “Sign”, the “Send” dialogue opens.
    • Under Encryption, select “S/MIME sign + encrypt”.
    • Tap on “Send”, the e-mail is digitally signed, encrypted and then sent.
  • The communication partner will see the lock symbol as a sign of an encrypted e-mail.
en/tp/email/security/google-android.txt · Last modified: 2022/09/30 11:34 by gu1111