adamvr / arduino-base64 Goto Github PK

C:\Users\user\Documents\Arduino\libraries\arduino-base64-master: Missing 'paragraph' from library

There is a commentary in sample:

// note input is consumed in this step: it will be empty afterwards
base64_encode(encoded, input, inputLen);

There is no consumption of "input" in base64_encode, is it?
But the input gets consumed.
So problem lies somewhere else.

base64_enc_len( "Hello world" ) returns 16.
And base64 encode result is "SGVsbG8gd29ybGQ=", which is 16 characters, OK?
But this doesn't include terminating \0.
So memory gets overwritten.

• input* is placed to address 3FFEFBE0
• encoded* is placed to address 3FFEFBD0
• so nul-terminator of "encoded" overwrites the first byte of input
• so input seems to be consumed.

Fix is easy:

int base64_enc_len(int plainLen) {
return ((plainLen + 2 - ((plainLen + 2) % 3)) / 3 * 4)+1;
}

I installed the library in Arduino IDE 1.6.4 but compiler gives error:
avr/pgmspace.h: No such file or directory
#include <avr/pgmspace.h>
^
compilation terminated.
Error compiling.

Thanks for suggestions, Timo

Can you provide a novice tutorial? Thank you very much. For instance, how can I import the lib to my Arduino project? I've tried to import the zip file and the folder file. They all failed.

ARDUINO UNO
ARDUINO IDE 1.0.5
ERROR:
java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:36)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:18)
at java.lang.reflect.Field.get(Field.java:358)
at apple.awt.CAccessibility.getAccessibleRoleFor(CAccessibility.java:200)
at apple.awt.CAccessibility$11.call(CAccessibility.java:215)
at apple.awt.CAccessibility$11.call(CAccessibility.java:212)
at apple.awt.CToolkit$CallableWrapper.run(CToolkit.java:1125)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at apple.awt.CToolkit$CPeerEvent.dispatch(CToolkit.java:1215)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:685)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:205)
at java.awt.Dialog$1.run(Dialog.java:1049)
at java.awt.Dialog$3.run(Dialog.java:1101)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Dialog.show(Dialog.java:1099)
at javax.swing.JFileChooser.privateShowDialog(JFileChooser.java:758)
at javax.swing.JFileChooser.showDialog(JFileChooser.java:721)
at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:626)
at processing.app.Base.handleAddLibrary(Base.java:2390)
at processing.app.Base$4.actionPerformed(Base.java:955)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
at com.apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:95)
at java.awt.MenuItem.processActionEvent(MenuItem.java:650)
at java.awt.MenuItem.processEvent(MenuItem.java:609)
at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:343)
at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:331)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:720)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:690)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:36)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:18)
at java.lang.reflect.Field.get(Field.java:358)
at apple.awt.CAccessibility.getAccessibleRoleFor(CAccessibility.java:200)
at apple.awt.CAccessibility$11.call(CAccessibility.java:215)
at apple.awt.CAccessibility$11.call(CAccessibility.java:212)
at apple.awt.CToolkit$CallableWrapper.run(CToolkit.java:1125)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at apple.awt.CToolkit$CPeerEvent.dispatch(CToolkit.java:1215)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:685)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:205)
at java.awt.Dialog$1.run(Dialog.java:1049)
at java.awt.Dialog$3.run(Dialog.java:1101)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Dialog.show(Dialog.java:1099)
at javax.swing.JFileChooser.privateShowDialog(JFileChooser.java:758)
at javax.swing.JFileChooser.showDialog(JFileChooser.java:721)
at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:626)
at processing.app.Base.handleAddLibrary(Base.java:2390)
at processing.app.Base$4.actionPerformed(Base.java:955)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
at com.apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:95)
at java.awt.MenuItem.processActionEvent(MenuItem.java:650)
at java.awt.MenuItem.processEvent(MenuItem.java:609)
at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:343)
at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:331)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:720)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:690)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:36)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:18)
at java.lang.reflect.Field.get(Field.java:358)
at apple.awt.CAccessibility.getAccessibleRoleFor(CAccessibility.java:200)
at apple.awt.CAccessibility$11.call(CAccessibility.java:215)
at apple.awt.CAccessibility$11.call(CAccessibility.java:212)
at apple.awt.CToolkit$CallableWrapper.run(CToolkit.java:1125)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at apple.awt.CToolkit$CPeerEvent.dispatch(CToolkit.java:1215)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:685)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:205)
at java.awt.Dialog$1.run(Dialog.java:1049)
at java.awt.Dialog$3.run(Dialog.java:1101)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Dialog.show(Dialog.java:1099)
at javax.swing.JFileChooser.privateShowDialog(JFileChooser.java:758)
at javax.swing.JFileChooser.showDialog(JFileChooser.java:721)
at javax.swing.JFileChooser.showOpenDialog(JFileChooser.java:626)
at processing.app.Base.handleAddLibrary(Base.java:2390)
at processing.app.Base$4.actionPerformed(Base.java:955)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:389)
at com.apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:95)
at java.awt.MenuItem.processActionEvent(MenuItem.java:650)
at java.awt.MenuItem.processEvent(MenuItem.java:609)
at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:343)
at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:331)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:720)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:690)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Hi! Your library is really cool! Can you please send a request to add it to the Arduino Library Manager?

https://github.com/arduino/Arduino/wiki/Library-Manager-FAQ

The library returns:

smtp.gmail.com = c210cC5nbWFpbC5jb20A

The https://www.base64encode.org/ returns:

smtp.gmail.com = c210cC5nbWFpbC5jb20=

I found a bug on library?

This is the output on an arduino due with the sample sketch:
wiki:pedia = d2lraTpwZWRpYQA=
This is however wrong. It should be "d2lraTpwZWRpYQ==".
Both string side by side:

d2lraTpwZWRpYQA=
d2lraTpwZWRpYQ==

Arduino IDE 1.6.12

'base64_enc_len' was not declared in this scope

Adam,

I found arduino-base64 and am using it in an open source project. I just wanted to say thanks - it works great!

cheers
adam

Adam Feuer
Seattle WA

In the example code... using it to authenticate a RESTAPI, I ran into a problem, but fixed it by decreasing the input size by 1.

// encoding
char input[] = "username:password";
int inputLen = sizeof(input)-1; <== Need to do this (most likely the code is processing the \0)

int encodedLen = base64_enc_len(inputLen);
char encoded[encodedLen];

// note input is consumed in this step: it will be empty afterwards
base64_encode(encoded, input, inputLen);

Serial.println(encoded);

will produce the following:
dXNlcm5hbWU6cGFzc3dvcmQ=

Here is what Apache will provide in the header for basic authentication... They match, but without decreasing the inputLen by 1, they will not.

Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=

the below one is a base64 conversion by library:
eyJldmVudCI6IlVzZXIgUmF0aW5nIiwicHJvcGVydGllcyI6eyJkaXN0aW5jdF9pZCI6IjEzNzkzIiwidG9rZW4iOiJjZDVjOTVlMzZjZTFkZmJjMzE2Mjk1MDFmODQzYTYyNSIsIkRldmljZSI6IjMyMSIsIk1vdmllSUQiOiIzMjEiLCJSYXRpbmciOiIzMjEifX0A

and this one is online based conversion:
eyJldmVudCI6IlVzZXIgUmF0aW5nIiwicHJvcGVydGllcyI6eyJkaXN0aW5jdF9pZCI6IjEzNzkzIiwidG9rZW4iOiJjZDVjOTVlMzZjZTFkZmJjMzE2Mjk1MDFmODQzYTYyNSIsIkRldmljZSI6IjMyMSIsIk1vdmllSUQiOiIzMjEiLCJSYXRpbmciOiIzMjEifX0=

both have one minute difference and that is at the end. I am using this string to upload data to an online service called Mixpanel although both fails but I want to make sure this library is making proper convesion.

Hi there,

Sorry that I am new in arduino.
I just make a test as follow:

uint8_t key[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
char data[] = "0123456789012345";
aes256_enc_single(key, data);
Serial.println(data);
Serial.println(data);
char output[base64_enc_len(sizeof(data))];
//base64_encode(output, data, sizeof(data));
aes256_dec_single(key, data);
Serial.print("decrypted:");
Serial.println(data);

This will be output correctly (the decryption is successful)

�⸮⸮⸮⸮�s⸮�B⸮⸮3⸮O
�⸮⸮⸮⸮�s⸮�B⸮⸮3⸮O
decrypted:0123456789012345

But when include back the function base64_encode(output, data, strlen(data)); it makes the decryption failed.

Kf⸮⸮eh@⸮⸮⸮I⸮⸮f⸮�
Kf⸮⸮eh@⸮⸮⸮I⸮⸮f⸮�
decrypted:⸮�⸮`:Q⸮⸮c⸮D ,⸮|⸮

Seems the encoder make some modification to the input data.
Am I missing something here..?
Thanks.

I want to covert image that is store into arduino sdcard to string using base64 can it possible or not?

Hi,

I am working on an implementation of OAuth for making authorized requests to Twitter, and I am using your library.
I have just found out that sometimes (looks like two out of three times) I obtain different values than the base64 Erlang implementation, and in these cases Twitter refuses to answer because of bad authentication.

For example, the sha-hmac implementation returns me a list of the following bytes (each value from 0 to 255, of course):

90 114 197 46 26 146 78 211 61 102 19 97 252 102 251 251 132 8 164 238

which I cast to characters and pass them to the base64_encode function, obtaining the following:

WnLFLhqSTtM9ZhNh+Gb704QIpO4=

which is refused by Twitter, while the Erlang answer (accepted by the server) with the same list is:

WnLFLhqSTtM9ZhNh/Gb7+4QIpO4=

Do you happen to have an idea of the reason behind this?

Could you set the license of your source code in order to know if I can use it, modify it ..?

Regards,
Mimil,