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sha512 hmac in ie11

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This commit is contained in:
Bruno Windels 2020-09-15 18:16:17 +02:00
parent 8b0892974d
commit 885983c2f7
1 changed files with 91 additions and 0 deletions
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prototypes/ie11-hmac.html Normal file
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<script src="https://dl.dropboxusercontent.com/s/r55397ld512etib/EncoderDecoderTogether.min.js?dl=0" nomodule="" type="text/javascript"></script>
<script src="https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js"></script>
<script src="deps/jsSHA/dist/sha512.js"></script>
<script type="text/javascript">
function decodeBase64(base64) {
const binStr = window.atob(base64);
const len = binStr.length;
const bytes = new Uint8Array(len);
for (let i = 0; i < len; i++) {
bytes[i] = binStr.charCodeAt(i);
}
return bytes;
}
function encodeBase64(bytes) {
let binStr = "";
for (let i = 0; i < bytes.length; i++) {
binStr += String.fromCharCode(bytes[i]);
}
return window.btoa(binStr);
}
function subtleCryptoResult(promiseOrOp, method) {
if (promiseOrOp instanceof Promise) {
return promiseOrOp;
} else {
return new Promise(function(resolve, reject) {
promiseOrOp.oncomplete = function(e) {resolve(e.target.result);}
promiseOrOp.onerror = function(e) {
reject(new Error("Crypto error on " + method));
}
});
}
}
const subtleCrypto = (window.crypto || window.msCrypto).subtle;
function computeFallback(key, data, hash) {
const shaObj = new jsSHA(hash, "UINT8ARRAY", {
"hmacKey": {
"value": key,
"format": "UINT8ARRAY"
}
});
shaObj.update(data);
return Promise.resolve(shaObj.getHash("UINT8ARRAY"));
}
function compute(key, data, hash) {
const opts = {
name: 'HMAC',
hash: {name: hash},
};
return subtleCryptoResult(subtleCrypto.importKey(
'raw',
key,
opts,
false,
['sign']
), "importKey").then(function (hmacKey) {
console.log("hmacKey", hmacKey);
return subtleCryptoResult(subtleCrypto.sign(
opts,
hmacKey,
data
), "sign");
}).then(function(buffer) {
return new Uint8Array(buffer);
});
}
const te = new TextEncoder();
computeFallback(
new Uint8Array(te.encode("I am a key!!")),
new Uint8Array(te.encode("I am some data!!")),
"SHA-512"
).then(function(mac) {
// should be 9bpJS7myNR/ttCfts+woXJSapVb19qqFRntGh17rHydOBB8+pplZFG8Cc4Qkxxznri4nWyzhFWcWnenY9vd5rA==
alert(encodeBase64(mac));
})
</script>
</body>
</html>