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---
layout: post
---
<script src="/js/aes.js"></script>
<script>
function getByteLen(val) {
var len = 0;
for (var i = 0; i < val.length; i++) {
if (val[i].match(/[^\x00-\xff]/ig) != null) len += 3;
else len += 1;
}
return len;
}
function onbtnDecrypto() {
var encryptedData = "{{ content | strip_html | strip_newlines }}";
var keyword = document.getElementById("inputkey").value;
if (keyword.replace(/(^\s*)|(\s*$)/g, "") == '') {
alert("请输入密码！");
return;
}
while (getByteLen(keyword) % 8 != 0) {
keyword = keyword + "\0";
}
var key = CryptoJS.enc.Utf8.parse(keyword);
var encryptedHexStr = CryptoJS.enc.Hex.parse(encryptedData);
var encryptedBase64Str = CryptoJS.enc.Base64.stringify(encryptedHexStr);
var decryptedData = CryptoJS.AES.decrypt(encryptedBase64Str, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
});
if (decryptedData.sigBytes < 0) {
document.getElementById("output").innerHTML = "解密失败！密文或者key错误!";
return;
}
try {
decryptedData.toString(CryptoJS.enc.Utf8)
} catch(e) {
document.getElementById("output").innerHTML = "解密失败！密文或者key错误!";
return;
}
var decryptedStr = decryptedData.toString(CryptoJS.enc.Utf8);
document.getElementById("output").innerHTML = decryptedStr;
document.getElementById("pwinput").style.display = "none";
}
</script>
<div id="pwinput">{{ page.tips | default: "请输入密码:" }}<br />
<input id="inputkey" type="password" /> <button onclick="onbtnDecrypto()">解密</button>
</div>
<div id="output"></div> <br />
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