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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var util = {
// Compare the contents of two ArrayBuffer(View)s
memcmp: function util_memcmp(x, y) {
if (!x || !y) { return false; }
var xb = new Uint8Array(x);
var yb = new Uint8Array(y);
if (x.byteLength !== y.byteLength) { return false; }
for (var i=0; i<xb.byteLength; ++i) {
if (xb[i] !== yb[i]) {
return false;
}
}
return true;
},
// Convert an ArrayBufferView to a hex string
abv2hex: function util_abv2hex(abv) {
var b = new Uint8Array(abv);
var hex = "";
for (var i=0; i <b.length; ++i) {
var zeropad = (b[i] < 0x10) ? "0" : "";
hex += zeropad + b[i].toString(16);
}
return hex;
},
// Convert a hex string to an ArrayBufferView
hex2abv: function util_hex2abv(hex) {
if (hex.length % 2 !== 0) {
hex = "0" + hex;
}
var abv = new Uint8Array(hex.length / 2);
for (var i=0; i<abv.length; ++i) {
abv[i] = parseInt(hex.substr(2*i, 2), 16);
}
return abv;
},
clone: function (obj) {
return new Promise(resolve => {
let {port1, port2} = new MessageChannel();
// Wait for the cloned object to arrive.
port1.onmessage = msg => resolve(msg.data);
// Clone the object.
port2.postMessage(obj);
});
},
cloneExportCompareKeys: function (key) {
return util.clone(key).then(clone => {
var exports = [];
if (key instanceof CryptoKey) {
exports.push(crypto.subtle.exportKey("raw", key));
exports.push(crypto.subtle.exportKey("raw", clone));
} else {
exports.push(crypto.subtle.exportKey("spki", key.publicKey));
exports.push(crypto.subtle.exportKey("spki", clone.publicKey));
exports.push(crypto.subtle.exportKey("pkcs8", key.privateKey));
exports.push(crypto.subtle.exportKey("pkcs8", clone.privateKey));
}
return Promise.all(exports).then(pairs => {
for (var i = 0; i < pairs.length; i += 2) {
if (!util.memcmp(pairs[i], pairs[i + 1])) {
throw new Error("keys don't match");
}
}
return clone;
});
});
}
};
function exists(x) {
return (x !== undefined);
}
function hasFields(object, fields) {
return fields
.map(x => exists(object[x]))
.reduce((x,y) => (x && y));
}
function hasKeyFields(x) {
return hasFields(x, ["algorithm", "extractable", "type", "usages"]);
}
function hasBaseJwkFields(x) {
return hasFields(x, ["kty", "alg", "ext", "key_ops"]);
}
function shallowArrayEquals(x, y) {
if (x.length != y.length) {
return false;
}
for (i in x) {
if (x[i] != y[i]) {
return false;
}
}
return true;
}
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