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sample_jwsverify.html
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<html>
<head>
<title>Sample JWS Verification Application</title>
<script language="JavaScript" type="text/javascript" src="../jsrsasign-all-min.js"></script>
<style type="text/css">
TD {vertical-align: top; border: solid 1px #000000; }
</style>
<script language="JavaScript" type="text/javascript">
function doVerify() {
var sJWS = document.form1.jws1.value;
var hN = document.form1.pubkey1_n.value;
var hE = document.form1.pubkey1_e.value;
var jws = new KJUR.jws.JWS();
var result = 0;
var pubKey;
try {
pubKey = KEYUTIL.getKey({n: hN, e: hE});
jws.parseJWS(sJWS);
result = KJUR.jws.JWS.verify(sJWS, pubKey, ["RS256"]);
} catch (ex) {
alert("Error: " + ex);
result = 0;
}
document.form1.im_enchead1.value = jws.parsedJWS.headB64U;
document.form1.im_encpayload1.value = jws.parsedJWS.payloadB64U;
document.form1.im_encsigval1.value = jws.parsedJWS.sigvalB64U;
document.form1.im_siginput1.value = jws.parsedJWS.si;
document.form1.im_sigval_h1.value = jws.parsedJWS.sigvalH;
document.form1.im_head1.value = jws.parsedJWS.headS;
document.form1.im_payload1.value = jws.parsedJWS.payloadS;
if (result == 1) {
alert("JWS signature is *Valid*.");
} else {
alert("JWS signature is *Invalid*.");
}
}
</script>
</head>
<body>
<form name="form1">
<h1>Sample JWS Verification Application</h1>
<p>
Default values are cited from <a href="http://tools.ietf.org/html/draft-jones-json-web-signature-04#appendix-A.2" target="_blank">
"draft-jones-json-web-signature-04 Annex.2"</a>.
</p>
<table width="100%">
<tbody>
<tr><td rowspan="3">Input</td><td>JWS</td><td colspan="2">
<textarea name="jws1" rows="8" cols="100">eyJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ.cC4hiUPoj9Eetdgtv3hF80EGrhuB__dzERat0XF9g2VtQgr9PJbu3XOiZj5RZmh7AAuHIm4Bh-0Qc_lF5YKt_O8W2Fp5jujGbds9uJdbF9CUAr7t1dnZcAcQjbKBYNX4BAynRFdiuB--f_nZLgrnbyTyWzO75vRK5h6xBArLIARNPvkSjtQBMHlb1L07Qe7K0GarZRmB_eSN9383LcOLn6_dO--xi12jzDwusC-eOkHWEsqtFZESc6BfI7noOPqvhJ1phCnvWh6IeYI2w9QOYEUipUTI8np6LbgGY9Fs98rqVt5AXLIhWkWywlVmtVrBp0igcN_IoypGlUPQGe77Rw</textarea></td></tr>
<tr><td rowspan="2">Verifying Public Key</td><td>Public Key Modulus (N)</td><td>
<textarea name="pubkey1_n" cols="64" rows="8">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</textarea>
</td></tr>
<tr><td>Public Exponent (E)</td><td>
<textarea name="pubkey1_e">010001</textarea><br/>
</td></tr>
<tr><td colspan="4">
<input type="button" value="Verify JWS Signature" onClick="doVerify();"/><br/>
</td></tr>
<tr><td colspan="2">Encoded Head</td><td colspan="2">
<textarea name="im_enchead1" cols="100" rows="1" readonly></textarea>
</td></tr>
<tr><td colspan="2">Encoded Payload</td><td colspan="2">
<textarea name="im_encpayload1" cols="100" rows="1" readonly></textarea>
</td></tr>
<tr><td colspan="2">Encoded Signature Value</td><td colspan="2">
<textarea name="im_encsigval1" cols="100" rows="6" readonly></textarea>
</td></tr>
<tr><td colspan="2">Signature Input</td><td colspan="2">
<textarea name="im_siginput1" cols="100" rows="3" readonly></textarea>
</td></tr>
<tr><td colspan="2">Signature Value (Hex)</td><td colspan="2">
<textarea name="im_sigval_h1" cols="100" rows="8" readonly></textarea>
</td></tr>
<tr><td colspan="2">Head</td><td colspan="2">
<textarea name="im_head1" cols="100" rows="2" readonly></textarea>
</td></tr>
<tr><td colspan="2">Payload</td><td colspan="2">
<textarea name="im_payload1" cols="100" rows="3" readonly></textarea>
</td></tr>
</tbody>
</table>
</form>
<h3>USAGE</h3>
<ol>
<li>Fill JWS signature, modulus and public exponent of a public key if you need.</li>
<li>Then just press "Verify JWS Signature" button.</li>
<li>If the signature is valid, you will see a dialog 'JWS signature is '*Valid*'.
You may see an error dialog if it is malformed signature.</li>
</li>
<li>As for JWS signature generation, please see <a href="sample_generate.html">this sample</a>.</li>
</ol>
<center>
Copyright © 2012-2016 Kenji Urushima, All Rights Reserved.
</center>
<div align="right">
<a href="index.html">Go back to index</a>
</div>
</body>
</html>