ETER is a local PGP suite that perfectly combines security, functionality and modern aesthetics: it will be suitable for the needs of both a newbie who only starts his journey into the world of privacy and a professional who has been using encryption since its inception.
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One of the app's most prominent features is zero connectivity approach - no matter what you do, ETER will never connect to the Internet: no analytics, no crash reports*, and no secret communications that have the potential to expose your keys. No messenger that claims to utilize end-to-end encryption will be able to provide you with that peace of mind. Utilizing the Secure Enclave in biometry-capable devices ensures that even in case of a successful remote malicious attack on your device, the saved password(s) for your key(s) will remain protected**. If no biometry found, ETER will refuse to save any password for more than one app session***.
With ETER you can
√ Generate RSA keys up to 8192 bits.
√ Edit already existing key pair's password, username, email and expiration date.
√ Share the generated public key or the whole key pair by AirDrop or by QR Exchange, if AirDrop use is restricted.
√ Import already existing keys with AirDrop, QR or from any other iOS app whether it is Documents by Riddle or simply Apple Mail (not recommended as keys may remain on the mail provider's servers).
√ Create complex PGP messages in intuitive Message Builder with HTML text, current geolocation, contacts, photos, videos, or objects of your Apple Files library. The created file will have ETGPG extension and comprise an archive with either obfuscated file names or not (ABC291.gpg vs Thesis.doc.gpg). These files can be decrypted by any PGP-compatible software, thus ensuring complete interoperability.
√ Sign the resulting file(s) by choosing the Signer element in the Message Builder.
√ Clearsign text-based messages (experimental).
√ Export either a PGP file, or ETER Link, or standard ASCII PGP for text-based messages. PGP file is a perfect option for any messenger/app other than iMessage. ETER Link is perfect for iMessage because it takes less space than a file tile, but the recipient must have ETER installed. Standard ASCII PGP is most appropriate for compatibility.
√ Create Message Builder templates with chosen recipients, signer, presence of Text and Time elements as well as any Settings related to the message-to-be.
√ Use iMessage Extension to quickly send a message using a template.
√ Conveniently view several messages at once by using (ETER 4)'s Message Browser. Hide (V) and then easily reinstate the browser from the main screen when you need it again. You can also clear (X) the decrypted messages from memory.
√ Use handy share extensions to quickly encrypt & decrypt text-based messages. "PGP Encrypt" extension also works with photos and videos.
√ Preview .gpg and .asc files in iMessage and other preview-supporting apps with ETER's QuickLook extension.
√ Protect you keyring by setting an app unlock password.
√ and more...
Please note that ETER comes with a fail-safe: even if you delete the application, the data will be preserved until the next installation. You can intentionally purge App Data by clicking three times on the logo.
I hope that you enjoy using the app and will quickly find the most efficient for you way to use it in your day-to-day communications. If you have any questions, concerns or suggestions, please do not hesitate to contact me at firstname.lastname@example.org.
* ETER does not make internet connection hence it is unable to auto-send crash reports, that is why feedback and manual crash reports will be highly appreciated. Thank you for your support!
** For more information please refer to the article (https://support.ete.is/r/articles/security-report) that discusses the security of ETER in detail.
*** The passwords are cleared from device's RAM when you force close - swipe up in the task manager - ETER or the system unloads it due to inactivity.