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mirror of https://github.com/kkapsner/CanvasBlocker synced 2024-12-22 21:00:23 +01:00
CanvasBlocker/test/testAPI.js
2020-03-14 12:54:23 +01:00

29 lines
672 B
JavaScript

const testAPI = function(){
"use strict";
const digest = crypto.subtle? crypto.subtle.digest.bind(crypto.subtle, "SHA-256"): function(buffer){
return new Uint32Array(buffer.buffer);
};
function bufferToString(hash){
const chunks = [];
(new Uint32Array(hash)).forEach(function(num){
chunks.push(num.toString(16));
});
return chunks.map(function(chunk){
return "0".repeat(8 - chunk.length) + chunk;
}).join("");
}
return {
hash: async function(input){
const buffer = ((typeof input) === "string")?
new TextEncoder("utf-8").encode(input):
input;
const hash = await digest(buffer);
return bufferToString(hash);
}
};
}();