Secure Message 1.4.0
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Free Version
Publisher Description
Secure Message - Send and receive files in adroid in a safer way
Why we should trust Secure Message :
Source code: https://www.amazon.com/dp/B08BDZ5MM6
Now, you can send your encrypted mail using Whatsapp, Facebook Messenger or Telegram, or any other communication application in addition to Mail clients Like Gmail, Yahoo, Hotmail,...
- Both, sender and mail receiver need to have "Secure Message" installed on their phones to be able to encrypt and decrypt shared E-mail.
- "Secure Message" allows you to encrypt an E-mail (Message body or/and attachment) before sending it, you can use any "E-mail client" installed on your android phone to send your encrypted e-mail.
- Lockdown mail encrypted files use ".lef" format for "Lockdown Encrypted File".
- Click on any received ".lef" file, and it will be opened and decrypted automatically by "Secure Message".
Encryption :
- "Secure Message" use RSA public key 4096- bits for key exchange
- "Secure Message" use AES 256- bits for encryption.
- For Android API 28 or higher, setUnlockedDeviceRequired and setIsStrongBoxBacked if available on your device are enabled.
- "Secure Message" uses the android key store system for storing the private key.
- For more information please visit :
- https://developer.android.com/training/articles/keystore
- https://developer.android.com/reference/android/security/keystore/KeyGenParameterSpec.Builder
You should know :
- Always remember that your private key is linked to your phone, and not to your E-mail address.
- "Secure Message" is not an "E-mail client", you will not send or receive E-mail from it, lockdown mail helps you to prepare an encrypted E-mail regardless of the used E-mail client.
- If you lose your phone or you uninstall "Secure Message", you will not be able to decrypt your old received E-mails, because you will lose your private key, please decrypt your files and keep them in a safe place before uninstalling Lockdown mail.
For that, you will use this application at your own risk.
Limitation :
The maximum file attachment size is 20 Mo.
You can add only one attachment per E-mail.
Privacy policy :
- "Secure Message" does not collect, share, send any personal data.
- "Secure Message" does not collect, share, send the user private key or any other needed information for encryption or decryption.
- "Secure Message" does not need access to the internet for encryption or decryption.
- "Secure Message" does not require any special permission, it will ask only for storage access when you want to send an attachment.
FAQ :
Q) Using lockdown mail instead of PGP :
A) No, if you want to decrypt your emails on many platforms(windows, android, ios..), or you want to keep your emails by keeping a private key, we recommend that you use PGP instead of lockdown mail.
Lockdown mail works only on android devices (For now).
So, if it is the case, why using lockdown Mail:
"Secure Message" allows you to?
- Protect your private key.
- Using fast algorithms.
- Make smaller encrypted data size. ( Encrypting with lockdown mail makes files smaller than PGP files).
-Make easy sharing and decrypting "encrypted files" than PGP, using any communication or email application like Gmail, WhatsApp, Telegram,...
- Make easy sharing public key.
About :
This is the first application release, Let us know if you have any questions or comments.
E-mail: lockdown-chat@protonmail.com
About Secure Message
Secure Message is a free app for Android published in the Telephony list of apps, part of Communications.
The company that develops Secure Message is Lockdown Apps. The latest version released by its developer is 1.4.0.
To install Secure Message on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2021-02-14 and was downloaded 8 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Secure Message as malware as malware if the download link to com.yousfi.lockdownmail is broken.
How to install Secure Message on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Secure Message is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Secure Message will be shown. Click on Accept to continue the process.
- Secure Message will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
