Created
April 9, 2018 03:18
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Signature Test (iOS UTF-8 message)
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Signature Test</title> | |
</head> | |
<body> | |
<div id="from"></div> | |
<div id="sig"></div> | |
<div id="recover"></div> | |
<script src="dist/index.js"></script> | |
</body> | |
</html> |
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// need webpack or other bundler to use web3, output to dist/index.js | |
var Web3 = require("web3"); | |
window.setTimeout(function() { | |
var web3 = new Web3(window.web3.currentProvider); | |
var from; | |
var e = document.getElementById('from'); | |
var msg = "\u2665"; // ♥ | |
var signData = web3.utils.utf8ToHex(msg); | |
web3.eth.getAccounts().then((accs) => { | |
console.log(accs); | |
from = accs[0].toLowerCase(); | |
e.innerHTML = 'Signing address: ' + from; | |
e = document.getElementById('sig'); | |
return web3.eth.personal.sign(signData, from); | |
}).then((sig) => { | |
console.log(sig); | |
e.innerHTML = `Signature of '${msg}': ${sig}`; | |
e = document.getElementById('recover'); | |
return web3.eth.personal.ecRecover(signData, sig); | |
}).then((addr) => { | |
var recovered = addr.toLowerCase(); | |
console.log(recovered); | |
e.innerHTML = `Recovered address: ${recovered} (${recovered === from ? 'match' : 'NOT MATCH'})`; | |
}).catch((err) => { | |
console.log(err); | |
e.innerHTML = 'ERROR: ' + err; | |
}); | |
}, 500); |
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