Collection of strong crypto libs that can be included in Arduino-core for ESP8266

• curve25519-donna : strong ECC key agreement function
• esp8266-trng : simple wrapper to the HW TRNG
• sha256 : SHA2-256 class

All these libs require that you already have:

• installed Arduino IDE for your platform; minimum release tested is 1.6.5, but should work with anything 1.5+
• installed the Arduino-core
• applied the patch if you get an error about iram0 filling up when you compile an example
• copied the lib you need under the right folder (~/Arduino/libraries in Linux)