Online Base64 Encoder

I am trying to encode a file which is in a certain folder and create a base64 string. I can load the file and read() it, but creating the base64 string prints nothing.

for file in os.listdir(os.path.join(app.config['UPLOAD_FOLDER'])):     print file     print type(file)     if file.startswith(str(current_user.id)):           with open(file, 'rb') as thefile:                                         data = thefile.read().encode("base64")                print "base: ", data                print "the ", type(thefile)

Here are the prints:

1-bild-1.jpg<type 'str'>base:  the  <type 'file'>

EDIT:

I noticed that thefile.read() is empty aswell. print shows nothing.

I am trying to encode a text string to base64.

i tried doing this :

name = "your name"print('encoding %s in base64 yields = %s\n'%(name,name.encode('base64','strict')))

But this gives me the following error:

LookupError: 'base64' is not a text encoding; use codecs.encode() to handle arbitrary codecs

How do I go about doing this ? ( using Python 3.4)

I have a string say FhY= which has been encoded to hex. So when run

>>> b6 = 'FhY='>>> b6.decode('base64')'\x16\x16'

This is a hex string that once converted should be 22 22. This result has been proven on the site https://conv.darkbyte.ru/. However, I cannot seem to do a proper conversion from base64 to decimal representation. Some of the challenges I am facing are

1. Expectation of decimal being an int. I just want base 10
2. Incorrect values. I have tried the following conversions base64 > base16(Convert a base64 encoded string to binary), base64 > binary > decimal(Convert hex string to int in Python) both of which have failed.

Please assist.

I want to use teh function base64.encode() to directly encode the contents of a file in Python.

The documentation states:

base64.encode(input, output)

Encode the contents of the binary input file and write the resulting base64 encoded data to the output file. input and output must be file objects.

So I do this:

encode(open('existing_file.dat','r'), open('output.dat','w'))

and get the following error:

>>> import base64>>> base64.encode(open('existing_file.dat','r'), open('output.dat','w'))Traceback (most recent call last):  File "<stdin>", line 1, in <module>  File "/usr/lib/python3.6/base64.py", line 502, in encode    line = binascii.b2a_base64(s)TypeError: a bytes-like object is required, not 'str'

To my eye that looks like a bug in /usr/lib/python3.6/base64.py but a big part of me does not want to believe that...

I have a problem with Base64 encoding/decoding. I have google chrome extension which scraps some simple data from opened web page like title, URL, image and then I am doing encoding of all these data and sending them to my nodejs app route.

The problem happens when some time in node router Base64 decode removes 'r' char from web page URL.

Here is my code in chrome extension which doing a encoding:

var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+=",encode:function(e){var t="";var n,r,i,s,o,u,a;var f=0;e=Base64._utf8_encode(e);while(f<e.length){n=e.charCodeAt(f++);r=e.charCodeAt(f++);i=e.charCodeAt(f++);s=n>>2;o=(n&3)<<4|r>>4;u=(r&15)<<2|i>>6;a=i&63;if(isNaN(r)){u=a=64}else if(isNaN(i)){a=64}t=t+this._keyStr.charAt(s)+this._keyStr.charAt(o)+this._keyStr.charAt(u)+this._keyStr.charAt(a)}return t},decode:function(e){var t="";var n,r,i;var s,o,u,a;var f=0;e=e.replace(/[^A-Za-z0-9+/=]/g,"");while(f<e.length){s=this._keyStr.indexOf(e.charAt(f++));o=this._keyStr.indexOf(e.charAt(f++));u=this._keyStr.indexOf(e.charAt(f++));a=this._keyStr.indexOf(e.charAt(f++));n=s<<2|o>>4;r=(o&15)<<4|u>>2;i=(u&3)<<6|a;t=t+String.fromCharCode(n);if(u!=64){t=t+String.fromCharCode(r)}if(a!=64){t=t+String.fromCharCode(i)}}t=Base64._utf8_decode(t);return t},_utf8_encode:function(e){e=e.replace(/rn/g,"n");var t="";for(var n=0;n<e.length;n++){var r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r)}else if(r>127&&r<2048){t+=String.fromCharCode(r>>6|192);t+=String.fromCharCode(r&63|128)}else{t+=String.fromCharCode(r>>12|224);t+=String.fromCharCode(r>>6&63|128);t+=String.fromCharCode(r&63|128)}}return t},_utf8_decode:function(e){var t="";var n=0;var r=c1=c2=0;while(n<e.length){r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r);n++}else if(r>191&&r<224){c2=e.charCodeAt(n+1);t+=String.fromCharCode((r&31)<<6|c2&63);n+=2}else{c2=e.charCodeAt(n+1);c3=e.charCodeAt(n+2);t+=String.fromCharCode((r&15)<<12|(c2&63)<<6|c3&63);n+=3}}return t}}var posturl1 = Base64.encode(posturl);

And this is my code in Nodejs router which doing Base64 decoding:

    var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+=",encode:function(e){var t="";var n,r,i,s,o,u,a;var f=0;e=Base64._utf8_encode(e);while(f<e.length){n=e.charCodeAt(f++);r=e.charCodeAt(f++);i=e.charCodeAt(f++);s=n>>2;o=(n&3)<<4|r>>4;u=(r&15)<<2|i>>6;a=i&63;if(isNaN(r)){u=a=64}else if(isNaN(i)){a=64}t=t+this._keyStr.charAt(s)+this._keyStr.charAt(o)+this._keyStr.charAt(u)+this._keyStr.charAt(a)}return t},decode:function(e){var t="";var n,r,i;var s,o,u,a;var f=0;e=e.replace(/[^A-Za-z0-9+/=]/g,"");while(f<e.length){s=this._keyStr.indexOf(e.charAt(f++));o=this._keyStr.indexOf(e.charAt(f++));u=this._keyStr.indexOf(e.charAt(f++));a=this._keyStr.indexOf(e.charAt(f++));n=s<<2|o>>4;r=(o&15)<<4|u>>2;i=(u&3)<<6|a;t=t+String.fromCharCode(n);if(u!=64){t=t+String.fromCharCode(r)}if(a!=64){t=t+String.fromCharCode(i)}}t=Base64._utf8_decode(t);return t},_utf8_encode:function(e){e=e.replace(/rn/g,"n");var t="";for(var n=0;n<e.length;n++){var r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r)}else if(r>127&&r<2048){t+=String.fromCharCode(r>>6|192);t+=String.fromCharCode(r&63|128)}else{t+=String.fromCharCode(r>>12|224);t+=String.fromCharCode(r>>6&63|128);t+=String.fromCharCode(r&63|128)}}return t},_utf8_decode:function(e){var t="";var n=0;var r=c1=c2=0;while(n<e.length){r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r);n++}else if(r>191&&r<224){c2=e.charCodeAt(n+1);t+=String.fromCharCode((r&31)<<6|c2&63);n+=2}else{c2=e.charCodeAt(n+1);c3=e.charCodeAt(n+2);t+=String.fromCharCode((r&15)<<12|(c2&63)<<6|c3&63);n+=3}}return t}}  var url = Base64.decode(decodedurl);

This is a sample of a problem:I am encoding this url and some other data (title, imagepath from page and url) http://www.c-sharpcorner.com/article/angularjs-2-0-from-beginning-introduction-of-angular-js-2-0/

This is result of encoding an nodejs router: http://www.c-sharpconer.com/article/angularjs-2-0-from-beginning-introduction-of-angular-js-2-0/

Decoded url missing 'r' charachter in domain name c-sharpconer shuld be c-sharpcoRner