Bawz / ESP8266-base64

ESP8266 Base64 encode and decode functions for Sming framework

ESP8266-base64

These are functions to encode and decode data to and from the Base64 format.

The original code is from this github repository: https://github.com/AxisCommunications/arduino-websocket-server/blob/master/Base64.cpp.

API:

There are two functions: one for encode and one for decode:

int encoded_lenght = b64_encode( char *data_out, char *data_in, int data_in_lenght );

int decoded_lenght = b64_decode( char *data_out, char *data_in, int data_in_lenght );

How to use:

I've used the Sming framework for the ESP8266, but the code should be portable to other architectures and frameworks:

Encoding:

char b64data[256];   // Size is just an example.
String s = "Hello world!";
Serial.println(" Message: " );
Serial.println( s) ;    

Serial.println(" Encoded message:");
int b64len = b64_encode(b64data, (char *)s.c_str(),s.length());
Serial.println ( String(b64data) );
Serial.println ("The lenght is: " + String(b64len) );

Decoding:

char decoded[256];
String ss(b64data);
b64_decode( decoded , (char *)ss.c_str() , ss.length() );
Serial.println("Decoded: " + String(decoded));

or

b64_decode( decodec, b64data, b64len);
Serial.println("Decoded: " + String(decoded));