Node.js 破译. final()方法
原文:https://www . geesforgeks . org/node-js-decrypt-final-method/
decrypt . final()方法是加密模块内一个内置的 decrypt 类应用编程接口，用于返回包含 decrypt 对象值的缓冲区。
语法:
const decipher.final([outputEncoding])
参数:该方法以输出编码为参数。
返回值:该方法返回包含解密值的缓冲区对象。
示例 1: 文件名:index.js
java 描述语言
// Node.js program to demonstrate the
// decipher.final() method
// Importing crypto module
const crypto = require('crypto');
// Creating and initializing algorithm and password
const algorithm = 'aes-192-cbc';
const password = 'Password used to generate key';
// Getting key for the decipher object
const key = crypto.scryptSync(password, 'salt', 24);
// Creating and initializing the static iv
const iv = Buffer.alloc(16, 0);
// Creating and initializing the decipher object
const decipher = crypto.createDecipheriv(algorithm, key, iv);
// Encrypted using same algorithm, key and iv.
const encrypted =
'e5f79c5915c02171eec6b212d5520d44480993d7d622a7c4c2da32f6efda0ffa';
// Updating the data to tbe decipher
let decrypted = decipher.update(encrypted, 'hex', 'utf8');
// Deciphering data by using
// final() method
decrypted += decipher.final('utf8');
// Display the result
console.log(decrypted);
输出:
some clear text data
示例 2: 文件名:index . js
JavaScript
// Node.js program to demonstrate the
// decipher.final() method
// Importing crypto module
const crypto = require('crypto');
// Creating and initializing algorithm and password
const algorithm = 'aes-192-cbc';
const password = 'Password used to generate key';
// Getting key for the decipher object
const key = crypto.scryptSync(password, 'salt', 24);
// creating and initializing the static iv
const iv = Buffer.alloc(16, 0);
// creating and initializing the decipher object
const decipher = crypto.createDecipheriv(algorithm, key, iv);
// Encrypted using same algorithm, key and iv.
const encrypted =
'e5f79c5915c02171eec6b212d5520d44480993d7d622a7c4c2da32f6efda0ffa';
// Creating and initializing empty buffer
var buf = [];
// Updating the data to tbe decipher
let decrypted = decipher.update(encrypted, 'hex', 'utf8');
// Pushing the updated data into buffer
buf.push(decrypted);
// Pushing decrypted data into buffer
buf.push(decipher.final('utf8'));
// Display the result
console.log(buf.join(' '));
输出:
some clear text data
使用以下命令运行 index.js 文件:
node index.js
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