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())));
}