AesUtil 加解密（aes加解密工具）

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import javax.crypto.Cipher;

import javax.crypto.CipherInputStream;

import javax.crypto.spec.IvParameterSpec;

import javax.crypto.spec.SecretKeySpec;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.io.OutputStream;

/**

* Createdby on 2024-03-27.

*/

public class AesUtil {

private static Log loger = LogFactory.getLog(AesUtil.class);

/**

* 加密key

*/

private IvParameterSpec dps = new IvParameterSpec("1234567812345678".getBytes());

private SecretKeySpec secretKey = new SecretKeySpec("1234567812345678".getBytes(), "AES");

public AesUtil(){

}

public static AesUtil getInstance(String password,String ivparameterspec){

AesUtil aesUtil=new AesUtil();

aesUtil.secretKey = new SecretKeySpec(password.getBytes(), "AES");

aesUtil.dps = new IvParameterSpec(ivparameterspec.getBytes());

return aesUtil;

}

/**

*

* decode:Ars加密

*

* @param @param str

* @param @return

* @param @throws Exception

* @return byte[]

* @throws

* @since CodingExample　Ver 1.1

*/

public byte[] encode(byte[] str){

try{

Cipher cp = Cipher.getInstance("AES/CBC/PKCS5Padding");

cp.init(Cipher.ENCRYPT_MODE, secretKey,dps);

return cp.doFinal(str);

}catch (Exception e) {

loger.error(e.getMessage(), e);

}

return null;

}

/**

*

* encode:Ars解密

*

* @param @param bye

* @param @return

* @param @throws Exception

* @return String

* @throws

* @since CodingExample　Ver 1.1

*/

public byte[] decode(byte[] bye){

try{

Cipher cpjm = Cipher.getInstance("AES/CBC/PKCS5Padding");

cpjm.init(Cipher.DECRYPT_MODE, secretKey,dps);

return cpjm.doFinal(bye);

}catch (Exception e) {

loger.error(e.getMessage(), e);

}

return null; //重新显示明文

}

/**

*

* decode:Ars加密

*

* @param @param str

* @param @return

* @param @throws Exception

* @return byte[]

* @throws

* @since CodingExample　Ver 1.1

*/

public void encode(InputStream fin, OutputStream fout){

try{

Cipher cp = Cipher.getInstance("AES/CBC/PKCS5Padding");

cp.init(Cipher.ENCRYPT_MODE, secretKey,dps);

CipherInputStream cipherInputStream = new CipherInputStream(fin, cp);

byte[] input = new byte[64];

int len = 0;

while ((len = cipherInputStream.read(input)) != -1) {

fout.write(input, 0, len);

}

fout.flush();

}catch (Exception e) {

loger.error(e.getMessage(), e);

}

return;

}

/**

*

* encode:Ars解密

*

* @param @param bye

* @param @return

* @param @throws Exception

* @return String

* @throws

* @since CodingExample　Ver 1.1

*/

public void decode(InputStream fin, OutputStream fout){

// try{

// Cipher cpjm = Cipher.getInstance("AES/CBC/PKCS5Padding");

// cpjm.init(Cipher.DECRYPT_MODE, secretKey,dps);

// CipherOutputStream cout = new CipherOutputStream(fout, cpjm);

// byte[] input = new byte[64];

// int len = 0;

// while ((len = fin.read(input)) != -1) {

// cout.write(input, 0, len);

// }

// cout.flush();

// }catch (Exception e) {

// loger.error(e.getMessage(), e);

// }

try{

Cipher cpjm = Cipher.getInstance("AES/CBC/PKCS5Padding");

cpjm.init(Cipher.DECRYPT_MODE, secretKey,dps);

CipherInputStream cipherInputStream = new CipherInputStream(fin, cpjm);

byte[] input = new byte[64];

int len = 0;

while ((len = cipherInputStream.read(input)) != -1) {

fout.write(input, 0, len);

}

fout.flush();

}catch (Exception e) {

loger.error(e.getMessage(), e);

}

return;

}

public static void main(String[] args) throws Exception {

// String s = "12345678901234567890123456789012345678901234567890123456789012345678901234567890";

String s = "12345678901234567890";

AesUtil aesUtil = new AesUtil();

aesUtil=AesUtil.getInstance(MD5Util.MD5Encoder("12345678901234567890").substring(0,16),MD5Util.MD5Encoder("12345678901234567890").substring(0,16));

String encode = ByteArrayHexStringUtil.bytesToHexString(aesUtil.encode(s.getBytes("UTF-8")));

System.out.println(encode);

System.out.println(new String(aesUtil.decode(ByteArrayHexStringUtil.hexStringToBytes(encode)),"UTF-8"));

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

// FileOutputStream outputStream=new FileOutputStream("miwen");

aesUtil.encode(new ByteArrayInputStream(s.getBytes()), byteArrayOutputStream);

// CypherStreamUtil.encryptFile(new ByteArrayInputStream(s.getBytes()),outputStream,"dldata123", "dldata12".getBytes());

// outputStream.flush();

// outputStream.close();

System.out.println(ByteArrayHexStringUtil.bytesToHexString(byteArrayOutputStream.toByteArray()));

ByteArrayOutputStream byteArrayOutputStream2 = new ByteArrayOutputStream();

// outputStream=new FileOutputStream("minwen");

aesUtil.decode(new ByteArrayInputStream(byteArrayOutputStream.toByteArray()), byteArrayOutputStream2);

System.out.println(ByteArrayHexStringUtil.bytesToHexString(byteArrayOutputStream2.toByteArray()));

System.out.println((new String(byteArrayOutputStream2.toByteArray())));

}