frestoinc/encryptionmail

A simple Encryption Mail app that is able to read and send encrypted messages using EAS protocol

EncryptionMail App

This simple app uses Exchange ActiveSync Protocol for email client/messaging. The app is able to send and read encrypted mail (.p7m) by signing and encrypting using ECC/RSA certs. The encryption and decryption uses certs obtain from an LDAP server and an external token(a card for example). You may change the how the encrption/decryption works by changing few parameters to read a soft cert for example.

Sending:

• message formatted to S/MIME format
• byte message signed with your private ECC/RSA private key
• signedData packed into PKCS#7 format
• encrypt signedData with recipients public certs retrieved from LDAP
• encryptData packed into .p7m
• EAS sends email

Reading:

• unpacked .p7m to encryptedData
• decrypt with your private ECC/RSA private key
• verify signedData
• message formatted to plain text

Tech Stack:

• Exchange ActiveSync Protocol
• Custom Bouncy Castle ECC and RSA signing and encryption
• Custom S/MIME mail
• UnboundId Ldap
• JSoup

Android Tech Stack:

• MVVM
• AndroidX Jetpack
• Dagger2
• RxJava
• LiveData
• Room
• Retrofit/OkHttp3
• Glide
• Security Crypto

encryptionmail's Issues

Add folder on mail client and sync to server

Is there an option to add a folder on the client app and sync to server?