Hi jesussotofan,

There are a couple of steps needed when building for Arduino. Most notably I will point out we have only ever tested the following on Intel Galileo board. We have not ported to any other platforms using Arduino.

You stated you only desire to use AES encrypt and decrypt, is this the only functionality you need? Are you not doing any TLS?
If this is the case you should be able to compile a select subset of our libraries which means you would only place the following four files in the <wolfssl-root> directory and then copy the root directory into the search path for Arduino.

wc_port.c                                                                
coding.c                                                                                                                                
aes.c                                                                 
error.c

If that is not the case and you intend to do a full build then the steps are just about as simple as the README implies. I will try to simplify more:

In arduino IDE hit File->open
By default you should be looking at a directory containing a folder named "libraries"
Note where that folder is located.
Now take wolfssl download.
If your download has "wolfssl-x.x.x" as the name, rename it to simply "wolfssl". I will refer to this directory as <wolfssl-root>, it just means the top-level wolfssl directory as we also have a directory inside the root directory named "wolfssl".
copy/paste the entire <wolfssl-root> directory into the "libraries" directory, not at the same level.
You should now have:

<path-to-arduino>/libraries/wolfssl
now follow the steps in the README for moving all the .c source files to the root directory of wolfssl and building the libraries.

Make sure you have the correct settings
In the Arduino IDE check Tools -> Board
by default this is set to something like "Arduino/Genuino Uno" if that is not the board you're building for then select the correct board. If you do not see the board you are looking for then select the "Board Manager" option and find the correct board support and install it. Then restart the IDE and again go Tools -> Board and find your board.

If you have any further trouble let us know.

Kind Regards,

Kaleb

Hi jesussotofan,

You're correct, wc_aes.c was a typo, should have been just aes.c.

Now that you have <path-to-arduino>/libraries/wolfssl/(bunch of stuff + aes.c, wc_port.c, coding.c, and error.c) you need to take the last step performed by the script which is to simply create a new file and call it "wolfssl.h" and put this line in it:

/* stub header file for Arduino compatibility */

arduino won't recognize it as a library without a header file with the same name as the directory (that's why I noted to rename wolfssl-x.x.x to simply wolfssl).

Regards,

Kaleb

Hi, I want to use wolfCrypt in a project on an ESP8266 module, but I can't get it to work after following these instructions. I have copied the four mentioned c files into the root directory of wolfssl and put the wolfssl directory into the libraries folder. I included <wolfssl.h> into the sketch file, but I get the following compile error:

Arduino: 1.6.8 (Windows 10), Board: "Generic ESP8266 Module, 80 MHz, 40MHz, DIO, 921600, 512K (64K SPIFFS), ck, Disabled, None"

In file included from C:\Program Files (x86)\Arduino\libraries\wolfssl/wolfssl/wolfcrypt/types.h:28:0,

                 from C:\Program Files (x86)\Arduino\libraries\wolfssl/wolfssl/wolfcrypt/aes.h:26,

                 from C:\Program Files (x86)\Arduino\libraries\wolfssl\aes.c:31:

C:\Program Files (x86)\Arduino\libraries\wolfssl/wolfssl/wolfcrypt/wc_port.h:107:9: error: unknown type name 'pthread_mutex_t'

         typedef pthread_mutex_t wolfSSL_Mutex;

         ^

exit status 1
Error compiling for board Generic ESP8266 Module.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Do I have to copy other c files as well? Or is it not compatible with the ESP8266 board?

I have installed the wolfssl library in Arduino and it appears me in the examples. Until here everything is ok but when I want to compile it, it says me the following errors.

In file included from C:\Program Files (x86)\Arduino\libraries\wolfssl/wolfssl/ssl.h:95:0,

                 from C:\Users\LabSE\AppData\Local\Temp\arduino_modified_sketch_350713\wolfssl_client.ino:24:

C:\Program Files (x86)\Arduino\libraries\wolfssl/wolfssl/io.h:120:36: fatal error: sys/socket.h: No such file or directory

             #include <sys/socket.h>

                                    ^

compilation terminated.

exit status 1
Error compilando para la tarjeta Arduino/Genuino Uno.

Anyone knows why?
Can this library help me to enable ssl to communicate with an smtp server using the wifly shield?