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