Created
August 14, 2018 15:55
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Metamask signing form
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<!-- | |
Created using JS Bin | |
http://jsbin.com | |
Copyright (c) 2018 by anonymous (http://jsbin.com/fovamotoca/2/edit) | |
Released under the MIT license: http://jsbin.mit-license.org | |
--> | |
<meta name="robots" content="noindex"> | |
<meta name="viewport" content="width=device-width"> | |
<title>JS Bin</title> | |
</head> | |
<body> | |
<textarea id='pvt'> | |
message to be signed | |
</textarea> | |
<br> | |
<input type='button' value='Sign' onclick='sign()'/> | |
<br> | |
Hash of message to sign: | |
<br> | |
<span id='hashpvt'> | |
</span> | |
<br> | |
Signed object: | |
<br> | |
<script src="https://code.jquery.com/jquery-3.1.0.js"></script> | |
<textarea id='pvtsigned'> | |
</textarea> | |
<script> | |
function sign() { | |
var msg = $('#pvt').text() | |
var msgToSign = web3.sha3(msg); | |
$('#hashpvt').text(msgToSign); | |
web3.eth.sign(web3.eth.coinbase, msgToSign, function(err, signature) { | |
if(err) { | |
$('#pvtsigned').text(err); | |
return; | |
} | |
var signed = { | |
signature: signature, | |
signed_message: msgToSign, | |
origin_message: msg | |
}; | |
$('#pvtsigned').text(JSON.stringify(signed, null, 4)) | |
}) | |
} | |
</script> | |
</body> | |
</html> |
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