錯誤密碼破譯

Question

爲什麼下面的代碼拋出了一個DecipherFinal錯誤密碼 -

var crypto = require('crypto'); 
    c=new Date; 
    x= (c.getTime()+"."+c.getMilliseconds()).toString()+".uIn"; 
    key = 'sevsolut' 
     , plaintext = x 
     , cipher = crypto.createCipher('aes-256-cbc', key) 
     , decipher = crypto.createDecipher('aes-256-cbc', key); 
    cipher.update(plaintext, 'utf8', 'base64'); 
    var encryptedPassword = cipher.final('base64') 

    decipher.update(encryptedPassword, 'base64', 'utf8'); 
    var decryptedPassword = decipher.final('utf8'); 

    console.log('encrypted :', encryptedPassword); 
    console.log('decrypted :', decryptedPassword); 

Answer 1

你需要從更新的輸出：

var crypto = require('crypto'); 
c=new Date(); 
x= (c.getTime()+"."+c.getMilliseconds()).toString()+".uIn"; 
key = "sevsolut" 
     , plaintext = x 
     , cipher = crypto.createCipher('aes-256-cbc', key) 
     , decipher = crypto.createDecipher('aes-256-cbc', key); 
var encryptedPassword = cipher.update(plaintext, 'utf8', 'base64'); 
encryptedPassword += cipher.final('base64') 

var decryptedPassword = decipher.update(encryptedPassword, 'base64', 'utf8'); 
decryptedPassword += decipher.final('utf8'); 

console.log('encrypted :', encryptedPassword); 
console.log('decrypted :', decryptedPassword);