- base64 decode then json decode: base64.NewDecoder EOF error and json invalid character error
I'm trying to base64 decode HTTP request, then decode it using JSON decoder.
I tried two ways to implement base64 decoder:
func decode(encoded []byte) ([]byte, error) { buff := new(bytes.Buffer) decoder := base64.NewDecoder(base64.StdEncoding, buff) _, err := decoder.Read(encoded) return buff.Bytes(), err}This function returns an EOF error. Go playground link: https://play.golang.org/p/038rEXWYW6q
func decode(encoded []byte) ([]byte, error) { decoded := make([]byte, base64.StdEncoding.EncodedLen(len(encoded))) _, err := base64.StdEncoding.Decode(decoded, encoded) return decoded, err}This works but has extra
x\00characters so when decoding JSON we would haveinvalid character '\x00' after top-level valueerror.Where is the problem with the first strategy?
- What form of binary to text encoding is this?
On October 16, at about 8 PM CDT, YouTube went down. Visitors of the site were presented with the following "Internal Server Error" page:
This page presented the user with some information (the full text from this screenshot is here) that they could give to the YouTube support team, which is encoded in some form.
It appears to have 64 different possible characters [a-zA-Z0-9\-_], which seems to suggest that it could be a modified form of base64. However, when I tried replacing
-with+and_with/as well as the other way around, I was unable to produce any meaningful data.1, 2Can anyone tell what form of binary-to-text encoding this is?
1. Although it is worth noting that replacing-with+and_with/produced technically valid base64 input while replacing-with/and_with+did not. Could be just a fluke, though.2. I tried using
fileto detect the file type. There are definitely other ways that I'm not aware of. - Base64 Encoding Image
I am building an open search add-on for Firefox/IE and the image needs to be Base64 Encoded so how can I base 64 encode the favicon I have?
I am only familiar with PHP
- NodeJS: How to decode base64 encoded string back to binary? [duplicate]
This question already has an answer here:
- How to do Base64 encoding in node.js? 3 answers
I was implementing password hashing with salt, so I generated salt as binary, hashed the password, base64 encoded the password and salt then stored them into database.
Now when I am checking password, I am supposed to decode the salt back into binary data, use it to hash the supplied password, base64 encode the result and check if the result matches the one in database.
The problem is, I cannot find a method to decode the salt back into binary data. I encoded them using the Buffer.toString method but there doesn't seem to be reverse function.
- Node.js get image from web and encode with base64
I'm trying to fetch an image from the web and encode it with base64.
what i have so far is basically:
var request = require('request');var BufferList = require('bufferlist').BufferList;bl = new BufferList(),request({uri:'http://tinypng.org/images/example-shrunk-8cadd4c7.png',responseBodyStream: bl}, function (error, response, body) { if (!error && response.statusCode == 200) { var type = response.headers["content-type"]; var prefix = "data:" + type + ";base64,"; var base64 = new Buffer(bl.toString(), 'binary').toString('base64'); var data = prefix + base64; console.log(data); }});This seems to be pretty close to the solution but i can't quite get it to work. It recognizes the data type and gives out the output:
data:image/png;base64however the bufferlist 'bl' seems to be empty.
Thanks in advance!