引入库
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/hmac-sha256.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/enc-base64.min.js"></script>
</head>版本查询：https://cdnjs.com/libraries
HmacSHA256摘要
<script>
$("#signature").click(function() {
var name = $("#name").val()
var email = $("#email").val()
var text = "";
if (name !== undefined && name != null && name.length > 0) {
text += "name" + name
}
if (email !== undefined && email != null && email.length > 0) {
text += "email" + email
}
console.log(text)
var hash = CryptoJS.HmacSHA256(text, "secret");
var signature = base64toHEX(CryptoJS.enc.Base64.stringify(hash)).toLowerCase();
console.log(signature)
$("#sign").val(signature)
});
function base64toHEX(base64) {
var raw = atob(base64);
var HEX = '';
for ( i = 0; i < raw.length; i++ ) {
var _hex = raw.charCodeAt(i).toString(16)
HEX += (_hex.length==2 ? _hex : '0'+_hex);
}
return HEX.toUpperCase();
}
</script>