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make prototype work on ie11

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Bruno Windels 2020-08-26 15:44:50 +02:00
parent 6edbec45eb
commit baa9879234
1 changed files with 85 additions and 0 deletions
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prototypes/olmtest-ie11.html Normal file
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style type="text/css">
pre {
font-family: monospace;
display: block;
white-space: pre;
font-size: 2em;
}
</style>
</head>
<body>
<script type="text/javascript">
if (!Math.imul) Math.imul = function(a, b) {
var aHi = (a >>> 16) & 0xffff;
var aLo = a & 0xffff;
var bHi = (b >>> 16) & 0xffff;
var bLo = b & 0xffff;
// the shift by 0 fixes the sign on the high part
// the final |0 converts the unsigned value into a signed value
return ((aLo * bLo) + (((aHi * bLo + aLo * bHi) << 16) >>> 0) | 0);
};
if (!Math.clz32) Math.clz32 = (function(log, LN2){
return function(x) {
// Let n be ToUint32(x).
// Let p be the number of leading zero bits in
// the 32-bit binary representation of n.
// Return p.
var asUint = x >>> 0;
if (asUint === 0) {
return 32;
}
return 31 - (log(asUint) / LN2 | 0) |0; // the "| 0" acts like math.floor
};
})(Math.log, Math.LN2);
</script>
<script src="https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js"></script>
<script type="text/javascript" src="../lib/olm/olm_legacy.js"></script>
<script type="text/javascript">
function main() {
if (window.msCrypto && !window.crypto) {
window.crypto = window.msCrypto;
}
Olm.init( ).then(function() {
const alice = new Olm.Account();
alice.create();
console.log("alice", alice.identity_keys());
const bob = new Olm.Account();
bob.unpickle("secret", "EWfA87or4GgQ+wqVkyuFiW9gUk3FI6QSXgp8E2dS5RFLvXgy4oFvxwQ1gVnbMkdJz2Hy9ex9UmJ/ZyuRU0aRt0IwXpw/SUNq4IQeVJ7J/miXW7rV4Ep+4RSEf945KbDrokDCS2CoL5PIfv/NYyey32gA0hMi8wWIfIlOxFBV4SBJYSC+Qd54VjprwCg0Sn9vjQouKVrM/+5jzsv9+JK5OpWW0Vrb3qrXwyAOEAQ4WlOQcqZHAyPQIw");
console.log("bob", bob.identity_keys());
// generate OTK on receiver side
bob.generate_one_time_keys(1);
const bobOneTimeKeys = JSON.parse(bob.one_time_keys());
const otkName = Object.getOwnPropertyNames(bobOneTimeKeys.curve25519)[0];
const bobOneTimeKey = bobOneTimeKeys.curve25519[otkName];
// encrypt
const aliceSession = new Olm.Session();
aliceSession.create_outbound(
alice,
JSON.parse(bob.identity_keys()).curve25519,
bobOneTimeKey
);
const message = aliceSession.encrypt("hello secret world");
console.log("message", message);
// decrypt
const bobSession = new Olm.Session();
bobSession.create_inbound(bob, message.body);
const plaintext = bobSession.decrypt(message.type, message.body);
console.log("plaintext", plaintext);
// remove Bob's OTK as it was used to start an olm session
console.log("bob OTK before removing", bob.one_time_keys());
bob.remove_one_time_keys(bobSession);
console.log("bob OTK after removing", bob.one_time_keys());
});
}
main();
</script>
</body>
</html>