Node.jsにおけるAES暗号化と他の言語の不一致問題解決方法
この数日間は一つの問題に悩まされています。NodejsのAES暗号とJava，C嗳暗号化による不一致。もちろん、これでは解読できません。長い間悩んでいました。後はやっぱりだめでした。ソースコードを見てから、まだ迷っています。インターネットでは、通常のnodejs AESは他の言語とは違っています。いいでしょう。nodejsのcryptモジュールです。
var crypto = require('crypto');
var data = "156156165152165156156";
console.log('Original cleartext: ' + data);
var algorithm = 'aes-128-ecb';
var key = '78541561566';
var clearEncoding = 'utf8';
//var cipherEncoding = 'hex';
//If the next line is uncommented, the final cleartext is wrong.
var cipherEncoding = 'base64';
/* */
var cipher = crypto.createCipher(algorithm, key);
var cipherChunks = [];
cipherChunks.push(cipher.update(data, clearEncoding, cipherEncoding));
cipherChunks.push(cipher.final(cipherEncoding));
console.log(cipherEncoding + ' ciphertext: ' + cipherChunks.join(''));
/* */
var decipher = crypto.createDecipher(algorithm, key);
var plainChunks = [];
for (var i = 0;i < cipherChunks.length;i++) {
plainChunks.push(decipher.update(cipherChunks[i], cipherEncoding, clearEncoding));
}
plainChunks.push(decipher.final(clearEncoding));
console.log("UTF8 plaintext deciphered: " + plainChunks.join(''));
var crypto = require('crypto');
var data = "156156165152165156156";
console.log('Original cleartext: ' + data);
var algorithm = 'aes-128-ecb';
var key = '78541561566';
var clearEncoding = 'utf8';
var iv = "";
//var cipherEncoding = 'hex';
//If the next line is uncommented, the final cleartext is wrong.
var cipherEncoding = 'base64';
var cipher = crypto.createCipheriv(algorithm, key,iv);
var cipherChunks = [];
cipherChunks.push(cipher.update(data, clearEncoding, cipherEncoding));
cipherChunks.push(cipher.final(cipherEncoding));
console.log(cipherEncoding + ' ciphertext: ' + cipherChunks.join(''));
var decipher = crypto.createDecipheriv(algorithm, key,iv);
var plainChunks = [];
for (var i = 0;i < cipherChunks.length;i++) {
plainChunks.push(decipher.update(cipherChunks[i], cipherEncoding, clearEncoding));
}
plainChunks.push(decipher.final(clearEncoding));
console.log("UTF8 plaintext deciphered: " + plainChunks.join(''));
例二：
仕事中にnodejs端末がaes暗号化を通じて、Androidクライアントjava解読を行い、nodejsもAndroidクライアントの暗号化された内容を解読する必要があることに同意します。二つの暗号化結果が違っています。照会資料はjava端末が鍵zaに対してもうMD 5を暗号化する必要があることを発見しました。以下はaes ecbの内容です。cbcも同様に秘密鍵MD 5を暗号化する必要があります。
nodejs：
/**
* aes
* @param data
* @param secretKey
*/
encryptUtils.aesEncrypt = function(data, secretKey) {
var cipher = crypto.createCipher('aes-128-ecb',secretKey);
return cipher.update(data,'utf8','hex') + cipher.final('hex');
}
/**
* aes
* @param data
* @param secretKey
* @returns {*}
*/
encryptUtils.aesDecrypt = function(data, secretKey) {
var cipher = crypto.createDecipher('aes-128-ecb',secretKey);
return cipher.update(data,'hex','utf8') + cipher.final('utf8');
}
package com.iofamily.util;
import java.security.MessageDigest;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
/**
* AES ， Nodejs
* @author lmiky
* @date 2014-2-25
*/
public class AESForNodejs {
public static final String DEFAULT_CODING = "utf-8";
/**
*
* @author lmiky
* @date 2014-2-25
* @param encrypted
* @param seed
* @return
* @throws Exception
*/
private static String decrypt(String encrypted, String seed) throws Exception {
byte[] keyb = seed.getBytes(DEFAULT_CODING);
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] thedigest = md.digest(keyb);
SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");
Cipher dcipher = Cipher.getInstance("AES");
dcipher.init(Cipher.DECRYPT_MODE, skey);
byte[] clearbyte = dcipher.doFinal(toByte(encrypted));
return new String(clearbyte);
}
/**
*
* @author lmiky
* @date 2014-2-25
* @param content
* @param key
* @return
* @throws Exception
*/
public static String encrypt(String content, String key) throws Exception {
byte[] input = content.getBytes(DEFAULT_CODING);
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] thedigest = md.digest(key.getBytes(DEFAULT_CODING));
SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skc);
byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
ctLength += cipher.doFinal(cipherText, ctLength);
return parseByte2HexStr(cipherText);
}
/**
*
* @author lmiky
* @date 2014-2-25
* @param hexString
* @return
*/
private static byte[] toByte(String hexString) {
int len = hexString.length() / 2;
byte[] result = new byte[len];
for (int i = 0; i < len; i++) {
result[i] = Integer.valueOf(hexString.substring(2 * i, 2 * i + 2), 16).byteValue();
}
return result;
}
/**
* 16
* @author lmiky
* @date 2014-2-25
* @param buf
* @return
*/
private static String parseByte2HexStr(byte buf[]) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < buf.length; i++) {
String hex = Integer.toHexString(buf[i] & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex);
}
return sb.toString();
}
public static void main(String[] args) throws Exception {
System.out.println(AESForNodejs.encrypt("fsadfsdafsdafsdafsadfsadfsadf", "1234fghjnmlkiuhA"));
System.out.println(AESForNodejs.decrypt("5b8e85b7a86ad15a275a7cb61fe4c0606005e8741f68797718a3e90d74b5092a", "1234fghjnmlkiuhA"));
}
}