mirror of
https://github.com/balena-io/open-balena.git
synced 2024-12-22 06:57:48 +00:00
80 lines
2.3 KiB
JavaScript
80 lines
2.3 KiB
JavaScript
'use strict';
|
|
|
|
var crypto = require('crypto');
|
|
var fs = require('fs');
|
|
|
|
var base32 = (function() {
|
|
// Extracted from https://github.com/chrisumbel/thirty-two
|
|
// to avoid having to install packages for this script.
|
|
var charTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
|
|
var byteTable = [
|
|
0xff, 0xff, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
|
|
0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
|
|
0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
|
|
0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
|
|
0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
|
|
0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
|
|
0x17, 0x18, 0x19, 0xff, 0xff, 0xff, 0xff, 0xff
|
|
];
|
|
|
|
function quintetCount(buff) {
|
|
var quintets = Math.floor(buff.length / 5);
|
|
return buff.length % 5 == 0 ? quintets: quintets + 1;
|
|
}
|
|
|
|
return function(plain) {
|
|
if (!Buffer.isBuffer(plain)) {
|
|
plain = new Buffer(plain);
|
|
}
|
|
var i = 0;
|
|
var j = 0;
|
|
var shiftIndex = 0;
|
|
var digit = 0;
|
|
var encoded = new Buffer(quintetCount(plain) * 8);
|
|
|
|
/* byte by byte isn't as pretty as quintet by quintet but tests a bit
|
|
faster. will have to revisit. */
|
|
while(i < plain.length) {
|
|
var current = plain[i];
|
|
|
|
if(shiftIndex > 3) {
|
|
digit = current & (0xff >> shiftIndex);
|
|
shiftIndex = (shiftIndex + 5) % 8;
|
|
digit = (digit << shiftIndex) | ((i + 1 < plain.length) ?
|
|
plain[i + 1] : 0) >> (8 - shiftIndex);
|
|
i++;
|
|
} else {
|
|
digit = (current >> (8 - (shiftIndex + 5))) & 0x1f;
|
|
shiftIndex = (shiftIndex + 5) % 8;
|
|
if(shiftIndex == 0) i++;
|
|
}
|
|
|
|
encoded[j] = charTable.charCodeAt(digit);
|
|
j++;
|
|
}
|
|
|
|
for (i = j; i < encoded.length; i++) {
|
|
encoded[i] = 0x3d; //'='.charCodeAt(0)
|
|
}
|
|
return encoded;
|
|
}
|
|
})();
|
|
|
|
function joseKeyId(der) {
|
|
var hasher = crypto.createHash('sha256');
|
|
hasher.update(der);
|
|
var b32 = base32(hasher.digest().slice(0, 30)).toString('ascii');
|
|
var chunks = [];
|
|
for (var i = 0; i < b32.length; i += 4) {
|
|
chunks.push(b32.substr(i, 4));
|
|
}
|
|
return chunks.join(':');
|
|
}
|
|
|
|
var derFilePath = process.argv[2];
|
|
var der = fs.readFileSync(derFilePath);
|
|
process.stdout.write(joseKeyId(der));
|