本文介绍了node.js aes decipher.final 错误的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我使用以下示例.我的问题是解密时:
Im using the following sample. The problem I have is when decrypting:
var 解密 = decipher.update(edata, 'binary') + decipher.final('binary');
var decrypted = decipher.update(edata, 'binary') + decipher.final('binary');
得到错误数字包络例程:EVD_DecryptFinal_ex:错误的最终块长度.我已经搜索过,但似乎无法弄清楚.我只指 node.js 加密/解密代码:
gets an error digital envelope routines:EVD_DecryptFinal_ex:wrong final block length. Ive searched but cant seem to figure it out. Im only referring to the node.js encrypt/decrypt code:
function AES()
{
}
AES.prototype.encrypt256 = function(input, password, callback)
{
var m = crypto.createHash('md5');
m.update(password)
var key = m.digest('hex');
m = crypto.createHash('md5');
m.update(password + key)
var iv = m.digest('hex');
var data = new Buffer(input, 'utf8').toString('binary');
var cipher = crypto.createCipheriv('aes-256-cbc', key, iv.slice(0,16));
var encrypted = cipher.update(data, 'binary') + cipher.final('binary');
var encoded = new Buffer(encrypted, 'binary').toString('base64');
callback(encoded);
}
AES.prototype.decrypt256 = function(input, password, callback)
{
// Convert urlsafe base64 to normal base64
var input = input.replace(/\-/g, '+').replace(/_/g, '/');
// Convert from base64 to binary string
var edata = new Buffer(input, 'base64').toString('binary')
// Create key from password
var m = crypto.createHash('md5');
m.update(password)
var key = m.digest('hex');
// Create iv from password and key
m = crypto.createHash('md5');
m.update(password + key)
var iv = m.digest('hex');
// Decipher encrypted data
var decipher = crypto.createDecipheriv('aes-256-cbc', key, iv.slice(0,16));
var decrypted = decipher.update(edata, 'binary') + decipher.final('binary');
var plaintext = new Buffer(decrypted, 'binary').toString('utf8');
callback(plaintext);
}
var data = "This is some test that I will use to remove";
var password = "test";
var aes = new AES();
aes.encrypt256(data, password, function(encrypted_data)
{
console.log("Encrypted=> " + encrypted_data);
aes.decrypt256(encrypted_data, password, function(decrypted_data)
{
console.log("Decrypted=> " + decrypted_data);
});
});
任何帮助都很棒.
推荐答案
我能够让它工作.这是代码,以防有人感兴趣:
I was able to get it working. Here is the code in case anyone is interested:
var crypto = require("crypto");
function encrypt(text, password){
var m = crypto.createHash('md5');
m.update(password)
var key = m.digest('hex');
m = crypto.createHash('md5');
m.update(password + key)
var iv = m.digest('hex');
var data = new Buffer(text, 'utf8').toString('binary');
var cipher = crypto.createCipher('aes-256-cbc', key, iv.slice(0,16));
var encrypted = cipher.update(data,'utf8','hex');
encrypted += cipher.final('hex');
var crypted = new Buffer(encrypted, 'binary').toString('base64');
return crypted;
}
function decrypt(text, password){
var m = crypto.createHash('md5');
m.update(password)
var key = m.digest('hex');
// Create iv from password and key
m = crypto.createHash('md5');
m.update(password + key)
var iv = m.digest('hex');
var input = text.replace(/\-/g, '+').replace(/_/g, '/');
var edata = new Buffer(input, 'base64').toString('binary');
var decipher = crypto.createDecipher('aes-256-cbc', key, iv.slice(0,16));
var decrypted = decipher.update(edata,'hex','utf8');
decrypted += decipher.final('utf8');
var dec = new Buffer(decrypted, 'binary').toString('utf8');
return dec;
}
var pass = 'test';
var hw = encrypt("hello world the is one of the best one eight 333 43345 45654654", pass);
console.log(hw);
var dd = decrypt(hw, pass);
console.log(dd);
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