如何使用JavaScript中的AES(高级加密标准)实现加密和解密。
为什么要使用AES(高级加密标准)?
安全性:与竞争性算法相比,应根据竞争算法的抗攻击能力来判断竞争算法,尽管安全强度被认为是竞争中最重要的因素。
成本::打算在全球,非排他性和免版税的基础上发布候选算法,并对其计算和内存效率进行评估。
答案 0 :(得分:2)
AES是一种非常简单而强大的加密和解密方法。请参阅下面的示例,该示例在您准备好的代码中将非常易于使用。
只需调用encryptMessage
和decryptMessage
函数。我已经在下面提供了运行示例。
如何调用这些方法:
code.encryptMessage('Welcome to AES !','your_password');
code.decryptMessage('U2FsdGVkX1/S5oc9WgsNyZb8TJHsuL7+p4yArjEpOCYgDTUdkVxkmr+E+NdJmro9','your_password')
let code = (function(){
return{
encryptMessage: function(messageToencrypt = '', secretkey = ''){
var encryptedMessage = CryptoJS.AES.encrypt(messageToencrypt, secretkey);
return encryptedMessage.toString();
},
decryptMessage: function(encryptedMessage = '', secretkey = ''){
var decryptedBytes = CryptoJS.AES.decrypt(encryptedMessage, secretkey);
var decryptedMessage = decryptedBytes.toString(CryptoJS.enc.Utf8);
return decryptedMessage;
}
}
})();
console.log(code.encryptMessage('Welcome to AES !','your_password'));
console.log(code.decryptMessage('U2FsdGVkX1/S5oc9WgsNyZb8TJHsuL7+p4yArjEpOCYgDTUdkVxkmr+E+NdJmro9','your_password'))
<!DOCTYPE html>
<html>
<head>
<title>E2EE</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js"></script>
</head>
<body>
</body>
</html>
您还可以参考我的 github 代码存储库以获取更多参考。
https://github.com/shedagemayur/JavaScriptCode/tree/master/AES
答案 1 :(得分:1)
您为什么要在JavaScript中实现AES?与本地(或wasm)实现相比,这将非常慢。幸运的是,您可以访问a native implementation right in the browser(如果您做了一些更改,甚至可以访问IE11)。它非常快(根据some benchmarks posted a while ago on the Webkit blog,速度提高了数百倍),并且不需要50kb的库。
在此示例中使用GCM,但如果不需要身份验证,则可以使用CTR模式:
const key = await crypto.subtle.generateKey({name: 'AES-GCM', length: 128}, true, ['encrypt', 'decrypt'])
const text = "confidential message"
// IV must be the same length (in bits) as the key
const iv = await crypto.getRandomValues(new Uint8Array(16))
const cyphertext = await crypto.subtle.encrypt({name: 'AES-GCM', tagLength: 32, iv}, key, new TextEncoder().encode(text))
这将导致cyphertext
包含一个带有加密字符串和4字节身份验证标签的ArrayBuffer(特定于GCM,其他AES模式将只生成加密数据)。只要拥有用于加密的密钥和IV,就可以轻松解密。
const cleartext = await crypto.subtle.decrypt({name: 'AES-GCM', tagLength: 32, iv}, key, cyphertext)
console.log(new TextDecoder().decode(cleartext))
答案 2 :(得分:1)
function encrypt(message = '', key = ''){
var message = CryptoJS.AES.encrypt(message, key);
return message.toString();
}
function decrypt(message = '', key = ''){
var code = CryptoJS.AES.decrypt(message, key);
var decryptedMessage = code.toString(CryptoJS.enc.Utf8);
return decryptedMessage;
}
console.log(encrypt('Hello World'));
console.log(decrypt('U2FsdGVkX1/0oPpnJ5S5XTELUonupdtYCdO91v+/SMs='))
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js"></script>
答案 3 :(得分:0)
下面的代码对我有用
encryptMessage: function(messageToencrypt = '', secretkey = ''){
var encryptedMessage = CryptoJS.AES.encrypt(messageToencrypt, secretkey);
return encryptedMessage.toString();
},
decryptMessage: function(encryptedMessage = '', secretkey = ''){
var decryptedBytes = CryptoJS.AES.decrypt(encryptedMessage, secretkey);
var decryptedMessage = decryptedBytes.toString(CryptoJS.enc.Utf8);
return decryptedMessage;
}
谢谢
答案 4 :(得分:0)
如果您要构建React或Node.js应用,则只需使用此库ncrypt-js即可加密和解密数据。
用法:
es5
Select
Buying.Customer_ID, Buying.Product_ID, Product.ID,
Product.Name, Customer.ID,
Customer.Customer_FName, Customer.Customer_Lname
from
((Buying
inner join
Product on Buying.Product_ID = Product.ID)
inner join
Customer on Buying.Customer_ID = Customer.ID)
where
Product.Address like '%Burwood%';
es6
var ncrypt = require('ncrypt-js'); // or var { encrypt, decrypt } = require('ncrypt-js);
let encryptData = ncrypt.encrypt('super secret data', 'secret_key');
// or
// let encryptData = encrypt('super secret data', 'secret_key');
console.log(encryptData); // 11ab949601eb136f58ac3fe846e30d76.f9ce133b20adc35eef32af95957547abbb6fbfc5cb91cd14f5b0a088bd031883963cde1a56fd62fe2aeb75451a065d21
var decryptedData = ncrypt.decrypt(encryptData);
// or
// var decryptedData = decrypt(encryptData);
console.log(decryptedData); // super secret data
答案 5 :(得分:0)
我已经构建了一个名为encrypt-with-password
的NPM程序包,该程序包允许您使用AES并使用PBDKF2从密码中导出AES密钥,从而使用密码来加密和解密文本和JavaScript对象。
安装:
npm install encrypt-with-password
或:
yarn add encrypt-with-password
加密和解密文本:
const encryptpwd = require('encrypt-with-password');
const text = 'Hello, World!';
const password = 'examplepassword';
const encrypted = encryptpwd.encrypt(text, password); // ---> this is the encrypted (output) value
// example encrypted value: 'e68e7ccd9e908665818a49f111c342ed:c9b83ff7624bb3b26af8cc853d61cd2f7959cecc4308383c39a0924e90637889'
const decrypted = encryptpwd.decrypt(encrypted, password) // ---> this decrypts the encrypted value and yields the original text
加密和解密JavaScript对象:
const encryptpwd = require('encrypt-with-password');
const jsObject = {
aString: 'Lorem ipsum dolor sit amet, consectetur adipisicing elit.',
aNumber: 5,
anArray: [1, 2, 3, 4, 5],
anObj: {
aKey: 'a value'
}
};
const password = 'examplepassword2';
const encrypted = encryptpwd.encryptJSON(jsObject, password); // ---> this is the encrypted value
// example encrypted value: 'f953284ffe3e44a7b9de8487b50c3449:123378b5c481399488f520ebb774b076b85a12bc0f9a67cf8faf359eb4f804fc0594bc42374a20b4216b1312d7a408cf94517e19dfcada5513c49f6d13d26c982c562904306900a3f777b9c19b9c002e12dd216984f68566684f9f0259a45e007a0cecb2325333faafb18ed0e751933d8b1195b02b2adda29269cf1c6fa6fff73f0bac4abcf58b391521e0382c06a5f01f31c1243d827f8c7076f81d7f530259a3ae459e524bee80230672f153ab6a4e'
const decrypted = encryptpwd.decryptJSON(encrypted, password) // ---> this decrypts the encrypted value and yields the original object
此软件包背后的代码是开源的:https://github.com/xtrp/encrypt-with-password。