JAVA AES 和 NodeJS AES

JAVA AES 和 NodeJS AES
•发布于 •作者 liuzy •1812 次浏览 •最后一次编辑是 •来自资讯

### JAVA

```java
/**
 * 下载local_policy.jar和US_export_policy.jar
 * 替换%JAVA_HOME%/jre/lib/security下文件
 */
public class AES128 {
	public static final String CHARSET = "UTF-8";
	// JAVA默认AES算法
	public static final String ALGORITHM = "AES/ECB/PKCS5Padding";

public static void main(String[] args) throws Exception {
		String data = "liuzy";
		String key = "123";
		System.out.println(encrypt(data, key));// b940e9df81cdeca66de4d6297a2f08af
		System.out.println(decrypt(encrypt(data, key), key));
	}

public static String encrypt(String data, String key) throws GeneralSecurityException, IOException {
		SecretKeySpec keySpec = new SecretKeySpec(md5(key), "AES");

Cipher cipher = Cipher.getInstance(ALGORITHM);
		cipher.init(Cipher.ENCRYPT_MODE, keySpec);
		cipher.update(data.getBytes(CHARSET));
		byte[] dataBytes = cipher.doFinal();

return toHex(dataBytes);
	}

private static String decrypt(String data, String key) throws GeneralSecurityException, IOException {
		SecretKeySpec keySpec = new SecretKeySpec(md5(key), "AES");

Cipher cipher = Cipher.getInstance(ALGORITHM);
		cipher.init(Cipher.DECRYPT_MODE, keySpec);
		cipher.update(fromHex(data));
		byte[] dataBytes = cipher.doFinal();

return new String(dataBytes, CHARSET);
	}

public static byte[] md5(String data) throws NoSuchAlgorithmException, IOException {
		MessageDigest digest = MessageDigest.getInstance("MD5");
		digest.update(data.getBytes(CHARSET));
		return digest.digest();
	}

public static byte[] fromHex(String hex) {
		byte[] bytes = new byte[hex.length() / 2];
		for (int i = 0; i < bytes.length; i++) {
			bytes[i] = (byte) Integer.parseInt(hex.substring(2 * i, 2 * i + 2), 16);
		}
		return bytes;
	}

public static String toHex(byte[] bytes) {
		BigInteger bi = new BigInteger(1, bytes);
		String hex = bi.toString(16);
		int paddingLength = (bytes.length * 2) - hex.length();
		if (paddingLength > 0)
			return String.format("%0" + paddingLength + "d", 0) + hex;
		else
			return hex;
	}
}
```

### NodeJS

```js
var crypto = require('crypto');

function md5(data) {
    return crypto.createHash('md5').update(data).digest('hex');
}

function en128(data, key) {
    var cipher = crypto.createCipher('aes-128-ecb', key);
    return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
}

function de128(data, key) {
    var cipher = crypto.createDecipher('aes-128-ecb', key);
    return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
}

function en256(data, key) {
    var cipher = crypto.createCipher('aes-256-ecb', key);
    return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
}

function de256(data, key) {
    var cipher = crypto.createDecipher('aes-256-ecb', key);
    return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
}

function en128md5(data, key) {
    var cipher = crypto.createCipher('aes-128-ecb', md5(key));
    return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
}

function de128md5(data, key) {
    var cipher = crypto.createDecipher('aes-128-ecb', md5(key));
    return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
}

function en256md5(data, key) {
    var cipher = crypto.createCipher('aes-256-ecb', md5(key));
    return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
}

function de256md5(data, key) {
    var cipher = crypto.createDecipher('aes-256-ecb', md5(key));
    return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
}

function en128vi(data, key) {
    var cipher = crypto.createCipheriv('aes-128-ecb', key, '');
    cipher.setAutoPadding(true);
    return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
}

function de128vi(data, key) {
    var cipher = crypto.createDecipheriv('aes-128-ecb', key, '');
    cipher.setAutoPadding(true);
    return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
}

var data = 'liuzy',
    key = '123';

console.log('en128\t=>\t' + en128(data, key));// b940e9df81cdeca66de4d6297a2f08af
console.log('de128\t=>\t' + de128(en128(data, key), key));// yes

console.log('en256\t=>\t' + en256(data, key));// c3287900482609282bd622f94d61d241
console.log('de256\t=>\t' + de256(en256(data, key), key));// yes

console.log('en128md5\t=>\t' + en128md5(data, key));// 6828223d5e4850d053b6b3566b60a586
console.log('de128md5\t=>\t' + de128md5(en128md5(data, key), key));// yes

console.log('en256md5\t=>\t' + en256md5(data, key));// 4330ba388a1cf9c9e391d02af9591e62
console.log('de256md5\t=>\t' + de256md5(en256md5(data, key), key));// yes

// console.log('en128vi\t=>\t' + en128vi(data, key));// error
```

1 回复

liuzy

### JAVA AES/ECB/PKCS7Padding

```java
/**
 * 下载local_policy.jar和US_export_policy.jar
 * 替换%JAVA_HOME%/jre/lib/security下文件
 * 需要bcprov-jdk*.jar
 */
public class AES256 {
	public static final String CHARSET = "UTF-8";
	// 使用此算法需要导入bcprov-jdk*.jar
	public static final String ALGORITHM = "AES/ECB/PKCS7Padding";

static {
		Security.addProvider(new BouncyCastleProvider());
	}

public static void main(String[] args) throws GeneralSecurityException, IOException {
		String data = "liuzy";
		String key = "123";
		System.out.println(encrypt(data, key));// b940e9df81cdeca66de4d6297a2f08af
		System.out.println(decrypt(encrypt(data, key), key));
	}

public static String encrypt(String data, String key) throws GeneralSecurityException, IOException {
		SecretKeySpec keySpec = new SecretKeySpec(md5(key), "AES");
		Cipher cipher = Cipher.getInstance(ALGORITHM, "BC");
		cipher.init(Cipher.ENCRYPT_MODE, keySpec);
		byte[] bytes = cipher.doFinal(data.getBytes(CHARSET));
		return toHex(bytes);
	}

public static String decrypt(String data, String key) throws GeneralSecurityException, IOException {
		SecretKeySpec keySpec = new SecretKeySpec(md5(key), "AES");
		Cipher cipher = Cipher.getInstance(ALGORITHM, "BC");
		cipher.init(Cipher.DECRYPT_MODE, keySpec);
		byte[] bytes = cipher.doFinal(fromHex(data));
		return new String(bytes, CHARSET);
	}

}
```

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liuzy

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