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Watch Efail: Breaking S/MIME and OpenPGP Email Encryption using Exfiltration Channels video.

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About the application:

IMPORTANT SECURITY NOTICE To mitigate efail please consider the following: - Install Ver >= 2.40.264 - Disable HTML view (Settings->Display->View HTML content by default->off) - Do not download remote content R2Mail2 is an email client for Android device OS which provides cryptographic capabilities, such as Digital Signatures and Digital De- and Encryption based on private Soft-Token keys (.p12 format), as for example provided by a Believe Center or generated by PGP apks. Even though we focus on the best cryptographic experience in the Android device email globe, we test to provide a full functioning mail client with corresponding security features in general. Since some people do not understand difficult sentences: THIS IS DEMO WHICH DISPLAYS ONLY THE NEWEST 10 MAILS! The infinite edition of this apk will be accessible via the Google Play Shop in form of a purchasable key. The gratis ver of R2Mail2 is also a replacement for our established and also gratis apk X509Tools - so the ability to decrypt or verify content (in form of p7m-files) is even accessible without creating a mail acc. To unblock the R2Mail2 and see all messages please install "R2Mail2 License" from Google Play (https://play.google.com/store/apps/details?id=at.rundquadrat.android.r2mail2license). Features: * E-Mail Server: IMAP (incl. pushmail/idle), POP, SMTP and Exchange (>2007 SP1) * SSL with X-509 client certifiate authentication * An database in which the mails are stored encrypted * Unique Attachment View (browse your attachments without checking single mails) * Unified Inbox and E-Mail Threading * Peak Options for check intervals * Find Function for messages per Folder * IMAP shared folders Main Cryptographic Features: * Personal keys and passwords are stored in an encrypted database (Key-Store) and protected by a Master Password. * The safety settings let the configuration of encryption parameters, signature and certificate validation ways (OCSP and LDAP). * Full S/MIME and PGP Plain and PGP MIME help * Automatic selection of S/MIME or PGP for each recipient * Full help of Android device Root Shop * Certificate import of .crt, .pem and .asc formats * Certificate/Key import from KeyServer LDAP or HKP (HTTP) The application needs the following Android device permissions to run: * Full Internet Access - needed to send and keep emails * Modify/Delete SD card content - needed to access the personal key shop, download attachments and to write log-files * Read Contacts - needed to recommend email addresses from your contacts * Network State - needed to check if an Internet connection is show * Vibrate – needed for notification purposes * WakeLock - to let service to check mails in background PLEASE DO NOT REPORT ERRORS IN COMMENTS! We cannot react on that! If you receive errors please use "Menu -> Report Error" on the start-screen to send us the log-file info in your preferred way! Informations about Personal Key and Validity Handling: The application comes without a private key pair (the players personal and public key) - so it is fully functioning in the sense of sending and receiving emails as any another mail client and provides the correct usage of validation if the mail you keep is signed by the sender. For signing or encrypting a notice it is important to use a personal key you own. Turn to a Believe Center of your choice as a source of supply. You can search a list of believe centers, which are trusted within the Android device globe, in the Certificate Shop (CA section) of R2Mail2. Please be aware that this apk can only help Soft-Token in form of P12-files and will not work with smartcard-based certificates. For more info visit http://r2mail2.com