java的BASE64Encoder,BASE64Decoder加密与解密

package com.app.common;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import sun.misc.BASE64Decoder;

import sun.misc.BASE64Encoder;

/**

*@DEMO:napp

*@Author:jilongliang

*@Date:2013-7-25

*/

@SuppressWarnings("all")

public class EDncrypt {

private static BASE64Encoder encoder = new BASE64Encoder();// 加密

private static BASE64Decoder decoder = new BASE64Decoder();// 解密

/**

* 加密文件

*

* @param f

* @param path

*/

private static String encryptFile(File f, String path) {

InputStream in = null;

OutputStream out = null;

String key = "";

try {

f = new File(path);

in = new FileInputStream(f);

out = new ByteArrayOutputStream();

// System.out.println(f.getAbsolutePath());

// System.out.println(f.length());

encoder.encodeBuffer(in, out);

key = out.toString();

in.close();

out.close();

} catch (IOException e) {

e.printStackTrace();

}

return key;

}

/**

*解密

*

* @param f

* @param path

*/

private static String decryptFile(File f, String path) {

InputStream in = null;

OutputStream out = null;

String key = "";

try {

f = new File(path);

in = new FileInputStream(f);

out = new ByteArrayOutputStream();

decoder.decodeBuffer(in, out);

key = out.toString();

in.close();

out.close();

} catch (IOException e) {

e.printStackTrace();

}

return key;

}

/**

* 加密

*

* @param key

* @return

* @throws Exception

*/

public static String encryptBASE64(String inputStr) {

String value = "";

try {

byte[] key = inputStr.getBytes();

value = encoder.encodeBuffer(key);

} catch (Exception e) {

e.printStackTrace();

}

return value;

}

/**

* 解密

*

* @param key

* @return

* @throws Exception

*/

public static String decryptBASE64(String outputStr) {

String value = "";

try {

byte[] key = decoder.decodeBuffer(outputStr);

value = new String(key);

} catch (Exception e) {

}

return value;

}

}

可逆的加密：Apache的

public static String encodePassword(String rawPass,String type) {

        String pass="";

        if(type.toLowerCase().equals("md5")){

            Md5PasswordEncoder md5PasswordEncoder=new Md5PasswordEncoder();

            pass=md5PasswordEncoder.encodePassword(rawPass, null);

        }

        return pass;

}

public static String encodePassword(String rawPass) {

    return encodePassword(rawPass,"MD5");

}

java 加密 Digest EnCrypt 加密与解密

package digest;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import javax.crypto.Cipher;

import javax.crypto.KeyGenerator;

import javax.crypto.SecretKey;

import org.apache.commons.codec.binary.Base64;

public class DigestExample {

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

        //加密内容

        final String content = "hello hello hello";

        /*

         * 单向加密 md5 & sha

         */

        //md5 加密

        MessageDigest md5 = MessageDigest.getInstance("md5");

        byte[] md5SecretStr = md5.digest(content.getBytes());

        System.out.print("md5 加密 : { " + new String(Base64.encodeBase64(md5SecretStr)) + " }\n\r");

        //sha 加密

        MessageDigest sha = MessageDigest.getInstance("sha");

        byte[] shaSecretBytes = sha.digest(content.getBytes());

        System.out.print("sha 加密 : { " + new String(Base64.encodeBase64(shaSecretBytes)) + " }\n\r");

        /*

         * 对称加密 aes & des

         */

        //aes 加密

        KeyGenerator aesKeyGenerator = KeyGenerator.getInstance("aes");

        SecretKey aesSecretKey = aesKeyGenerator.generateKey();

        Cipher aesCipher = Cipher.getInstance("aes");

        aesCipher.init(Cipher.ENCRYPT_MODE, aesSecretKey);

        byte[] aseResultBytes = aesCipher.doFinal(content.getBytes());

        System.out.print("aes 加密 : { " + new String(Base64.encodeBase64(aseResultBytes)) + " }\n\r");

        //aes 解密

        aesCipher.init(Cipher.DECRYPT_MODE, aesSecretKey);

        aseResultBytes = aesCipher.doFinal(aseResultBytes);

        System.out.print("aes 解密: { " + new String(aseResultBytes) + " }\n\r");

        //des 加密

        KeyGenerator desKeyGenerator = KeyGenerator.getInstance("aes");

        SecretKey desSecretKey = desKeyGenerator.generateKey();

        Cipher desCipher = Cipher.getInstance("aes");

        desCipher.init(Cipher.ENCRYPT_MODE, desSecretKey);

        byte[] dseResultBytes = desCipher.doFinal(content.getBytes());

        System.out.print("des 加密 : { " + new String(Base64.encodeBase64(dseResultBytes)) + " }\n\r");

        desCipher.init(Cipher.DECRYPT_MODE, desSecretKey);

        dseResultBytes = desCipher.doFinal(dseResultBytes);

        System.out.print("aes 解密: { " + new String(dseResultBytes) + " }\n\r");

    }

}

console run result

md5 : { ZnptFLLcFU/qw2LdrU1MqA== }

sha : { g52cyhSXeHXr8kcWODkq738OAVk= }

aes 加密 : { pudmyrvBANStqfcDIb7+DFPK+5gPZP/ais6sibTKyIk= }

aes 解密: { hello hello hello }

des : { Nx2RwaJBl5+P2eVb0v+JRVTd8tfwAQQ7KA28n97Ln8E= }

aes 解密: { hello hello hello }

rsa 非对称加密

package digest;

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.PrivateKey;

import java.security.PublicKey;

import javax.crypto.Cipher;

import org.apache.commons.codec.binary.Base64;

public class RsaExample {

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

        final String context = "rsa加密";

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("rsa");

        KeyPair gkp = kpg.generateKeyPair();

        PrivateKey privateKey = gkp.getPrivate();

        PublicKey publicKey = gkp.getPublic();

        byte[] encode1 = privateKey.getEncoded();

        byte[] encode2 = publicKey.getEncoded();

        byte[] key1 = Base64.encodeBase64(encode1);

        byte[] key2 = Base64.encodeBase64(encode2);

        System.out.println(new String(key1));

        System.out.println(new String(key2));

        /*System.out.println("privateKey:{"+privateKey+"}");

        System.out.println("publicKey:{" +publicKey+"}");*/

        Cipher cipher = Cipher.getInstance("rsa");

        cipher.init(, privateKey);

        byte[] result = cipher.doFinal(context.getBytes());

        byte[] signatrue = Base64.encodeBase64(result);

        System.out.println("result:{" + new String(signatrue)+"}");

        byte[] i = Base64.decodeBase64(signatrue);

        cipher.init(, publicKey);

        System.out.println(new String(cipher.doFinal(i)));

    }

}

console run result

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

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPirX/2wD50xEeMC/o2MEoI78IN1VOCka3b6DoqcvOtkTnCXcPZwhkSMnxaSGBWAC2OZJtBk20dXL3weTeOxmxGnfDjLDItSTrzYIpKfKH1IBXeGq7Ig+qerFne0bML1X4HRSkJj+jm7vYzOcwmcXrWh/29MSurQTSSVv8J/sxvQIDAQAB

privateKey:{Sun RSA private CRT key,  bits

  modulus:

  public exponent:

  private exponent:

  prime p:

  prime q:

  prime exponent p:

  prime exponent q:

  crt coefficient:  }

publicKey:{Sun RSA public key,  bits

  modulus:

  public exponent: }

result:{XxdVrhgArX5/AnDGGqU2/VGTcrmjcY37SnKxnTR7+5VFaACbj6aSi+S3xyfgu1UHwlDUrpYczCU+ikXrbSQWs9+WGT1CixYrCC04VuxxZ32G4gKLY8Q9Ag904PuTQbA/s/YWuHxfvKykr9r2Epx2wHrZiRKA6eFvVQIQCKzWjvk=}

rsa加密