ECC SMS

Official support until Android 4.3!Made for encryption lovers! with Elliptic Curve Cryptography.- totally over sms- public-key infrastructure (PKI)- Elliptic Curve Integrated Encryption Scheme (ECIES)- equals >15360bit RSA Encryption!- protects efficiently until year 2120This means that after 2120 there may be enought computational power on earth to find the private key for decrypting the messages in a useful time.
Key sharing works like in PGP SMS.Because of the strong ecryption, it needs at least 2 sms for a single conversation.
Anti-Prism SMS.