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kadena-crypto.html
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kadena-crypto.html
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<html>
<head>
<script src="kadena-crypto.js"></script>
</head>
<body>
<h1>Kadena Test</h1>
<button id="register" onclick="onRegister()">Register</button>
<button id="login" onclick="onLogin()">Login</button>
<script>
const recovery = lib.kadenaGenMnemonic()
console.log(recovery)
console.log("Is valid mnemonic (expecting 'true'): ", lib.kadenaCheckMnemonic(recovery));
console.log("Is valid mnemonic (expecting 'false'): ", lib.kadenaCheckMnemonic(recovery.substring(0, recovery.lastIndexOf(" "))));
const sampleHardenedIndex = 0x80000000
const index = 0x00
const pwd = "my-pwd"
const newPwd = "my-new-pwd"
var root = lib.kadenaMnemonicToRootKeypair(pwd, recovery);
console.log(root.toString('hex'))
// I'd print out the hex forms here but apparently there isn't a trivial way
// to convert ArrayBuffers or Uint8Array to hex strings on the browser?!
// Buffer offers this, and our underying nodejs code uses Buffer, but then
// it gets browserified and we don't expose it in the api
const [xprvRaw, xpubRaw] = lib.kadenaGenKeypair(pwd, root, sampleHardenedIndex | index)
const xprv = new Uint8Array(xprvRaw)
const xpub = new Uint8Array(xpubRaw)
// test signature
var msg = 'hello there'
var sig = lib.kadenaSign(pwd, msg, xprv)
console.log(lib.kadenaVerify(msg, xpub, sig))
// Make sure verification fails on a diff messgage
var msg2 = "not hello there"
console.log(lib.kadenaVerify(msg2, xpub, sig))
// Switch to a new password for the root key
const newRoot = lib.kadenaChangePassword(root, pwd, newPwd)
const [xprvRawNew, xpubRawNew] = lib.kadenaGenKeypair(newPwd, newRoot, sampleHardenedIndex | index)
const xprvNew = new Uint8Array(xprvRawNew)
const xpubNew = new Uint8Array(xpubRawNew)
var sigNew = lib.kadenaSign(newPwd, msg, xprvNew)
console.log("Use new xpub to confirm new sig", lib.kadenaVerify(msg, xpubNew, sigNew))
console.log("Use old xpub to confirm new sig", lib.kadenaVerify(msg, xpub, sigNew))
</script>
</body>
</html>