-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathindex.html
35 lines (35 loc) · 1.52 KB
/
index.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
<html>
<body>
<h1>File to SHA256</h1>
<p>Choose a file under 1GB:</p>
<input type="file" id="myfile" onchange="onMyfileChange(this)" />
<br>
<code id="hash"></code>
<script src="https://unpkg.com/[email protected]/dist/jszip.js" type="text/javascript"></script>
<script type="text/javascript">
function onMyfileChange(fileInput) {
if(fileInput.files[0] == undefined) {
return ;
}
var filename = fileInput.files[0].name;
// var filesize = fileInput.files[0].size;
var reader = new FileReader();
reader.onload = function(ev) {
console.log("File", filename, ":");
//
crypto.subtle.digest('SHA-256', ev.target.result).then(hashBuffer => {
// Convert hex to hash, see https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest#converting_a_digest_to_a_hex_string
const hashArray = Array.from(new Uint8Array(hashBuffer));
const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join(''); // convert bytes to hex string
console.log(hashHex);
document.getElementById('hash').innerHTML = hashHex;
}).catch(ex => console.error(ex));
};
reader.onerror = function(err) {
console.error("Failed to read file", err);
}
reader.readAsArrayBuffer(fileInput.files[0]);
}
</script>
</body>
</html>