Base64算法,消息摘要算法-Base64,MD5,SHA,MAC加密

2019-11-11 02:18:13
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参考慕课的加密视频上面的代码:http://www.imooc.com/learn/285
学习security应用与算法如下:
         *   1.Base64算法	 *   2.消息摘要算法	 *   3.对称加密算法	 *   4.非对称加密算法	 *   5.数字签名算法	 *   6.数字证书	 *   7.安全协议
1.创建一个maven项目,可以参考一下百度:http://jingyan.baidu.com/article/ea24bc39b1a8c7da63b33159.html
2.pom.xml文件进行如下配置：
<PRoject xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">	<modelVersion>4.0.0</modelVersion>	<groupId>com.samlai</groupId>	<artifactId>security</artifactId>	<version>0.0.1-SNAPSHOT</version>	<packaging>jar</packaging>	<name>security</name>	<url>http://maven.apache.org</url>	<properties>		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>	</properties>	<dependencies>		<dependency>			<groupId>junit</groupId>			<artifactId>junit</artifactId>			<version>3.8.1</version>			<scope>test</scope>		</dependency>		<!-- https://mvnrepository.com/artifact/org.bouncycastle/bcprov-jdk16 -->		<dependency>			<groupId>org.bouncycastle</groupId>			<artifactId>bcprov-jdk16</artifactId>			<version>1.45</version>		</dependency>		<!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->		<dependency>			<groupId>commons-codec</groupId>			<artifactId>commons-codec</artifactId>			<version>1.10</version>		</dependency>		<!-- 不知道为什么引入jdk的base64Decoder,所以要添加jdk中jre的rt.jar,进行pom引入本地文件 -->		<dependency>			<groupId>com.samlai</groupId>			<artifactId>my-tools</artifactId>			<version>2.5.0</version>			<type>jar</type>			<scope>system</scope>			<systemPath>${basedir}/lib/rt.jar</systemPath>		</dependency>	</dependencies></project>4.直接在project写对应的Base64的class类:
package com.samlai.security;import java.io.IOException;import org.apache.commons.codec.binary.Base64;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;//Base64算法//应用：证书，密钥，emailpublic class Base64Study {	/**	 * 加密应用:	 * 	 1.Base64算法	 *   2.消息摘要算法	 *   3.对称加密算法	 *   4.非对称加密算法	 *   5.数字签名算法	 *   6.数字证书	 *   7.安全协议	 * 	 * 3种方式进行加密解密处理：	 *  	1.原生的JDK方式	 *  	2.Bouncy Castle	 *  		-两种支持方案:A.配置 2.调用	 *      3.Commons Codec	 *      	-Apache	 *      	-Base64,二进制,十六进制,字符集编码	 *      	-Url编码/解码	 */		private static String STR="one type of security:Base64";		public static void main(String[] args) {		//JDK方式实现		jdkDoBase64();		//CC实现的方式		commonsCodecBase64();		//BC实现的方式		bouncyCastleBase64();	}			//JDK方式实现	public static void jdkDoBase64(){		try {			BASE64Encoder encoder=new BASE64Encoder();			String encode=encoder.encode(STR.getBytes());			System.out.println("jdk encode:  "+encode);			BASE64Decoder decoder=new BASE64Decoder();			System.out.println("jdk decode:  "+new String(decoder.decodeBuffer(encode)));		} catch (IOException e) {			e.printStackTrace();		}	}		//Commons Codec方式实现	public static void commonsCodecBase64(){		byte[] encodeBytes=Base64.encodeBase64(STR.getBytes());		System.out.println("cc encode:  "+new String(encodeBytes));		byte[] decodeBytes=Base64.decodeBase64(encodeBytes);		System.out.println("cc decode:  "+new String(decodeBytes));	}		//Bouncy Castle方式实现	public static void bouncyCastleBase64(){		byte[] encodeBytes=org.bouncycastle.util.encoders.Base64.encode(STR.getBytes());		System.out.println("bc encode: "+new String(encodeBytes));		byte[] decodeBytes=org.bouncycastle.util.encoders.Base64.decode(encodeBytes);		System.out.println("bc decode: "+new String(decodeBytes));	}					}
运行的结果是：
jdk encode:  b25lIHR5cGUgb2Ygc2VjdXJpdHk6QmFzZTY0jdk decode:  one type of security:Base64cc encode:  b25lIHR5cGUgb2Ygc2VjdXJpdHk6QmFzZTY0cc decode:  one type of security:Base64bc encode: b25lIHR5cGUgb2Ygc2VjdXJpdHk6QmFzZTY0bc decode: one type of security:Base64
5.新建消息摘要算法-MD,以Jdk,bc,cc方式来进行实现
package com.samlai.security;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import org.apache.commons.codec.binary.Hex;import org.apache.commons.codec.digest.DigestUtils;import org.bouncycastle.crypto.Digest;import org.bouncycastle.crypto.digests.MD2Digest;import org.bouncycastle.crypto.digests.MD4Digest;import org.bouncycastle.crypto.digests.md5Digest;//消息摘要算法public class MessageDigestStudy {	/**	 * MD(Message Digest) 	 * 		MD家族(128位摘要信息) -MD2,MD4 	 * 	类型: 	 * 		算法     长度         实现方	 * 		MD2-128位-JDK	 * 		MD4-128位-Boundcy Castle 	 * 		MD5-128位-JDK	 * 	 * SHA(Secure Hash Algorithm) MAC(Message Authentication Code) 验证数据的完整性	 * 数字签名核心算法	 */	private static String STR = "one type of security:MD-X";	public static void main(String[] args) {		jdkMd5();		jdkMd2();		bcMd4();		bcMd2();		bcMd5();		ccMd5();		ccMd2();	}	// jdkMd5	public static void jdkMd5() {		try {			MessageDigest md = MessageDigest.getInstance("MD5");			byte[] md5Bytes = md.digest(STR.getBytes());			// 借助cc的算法来进行md5的加密出对应的字符串			System.out.println("JDK MD5: " + Hex.encodeHexString(md5Bytes));		} catch (NoSuchAlgorithmException e) {			e.printStackTrace();		}	}	// jdkMd2	public static void jdkMd2() {		try {			MessageDigest md = MessageDigest.getInstance("MD2");			byte[] md5Bytes = md.digest(STR.getBytes());			// 借助cc的算法来进行md2的加密出对应的字符串			System.out.println("JDK MD2: " + Hex.encodeHexString(md5Bytes));		} catch (NoSuchAlgorithmException e) {			e.printStackTrace();		}	}	// bcMd4	public static void bcMd4() {		Digest digest = new MD4Digest();		digest.update(STR.getBytes(), 0, STR.getBytes().length);		byte[] md4Bytes = new byte[digest.getDigestSize()];		digest.doFinal(md4Bytes, 0);		System.out.println("bc Md4: " + Hex.encodeHexString(md4Bytes));	}	// bcMd2	public static void bcMd2() {		Digest digest = new MD2Digest();		digest.update(STR.getBytes(), 0, STR.getBytes().length);		byte[] md4Bytes = new byte[digest.getDigestSize()];		digest.doFinal(md4Bytes, 0);		System.out.println("bc Md2: " + Hex.encodeHexString(md4Bytes));	}	// bcMd5	public static void bcMd5() {		Digest digest = new MD5Digest();		digest.update(STR.getBytes(), 0, STR.getBytes().length);		byte[] md4Bytes = new byte[digest.getDigestSize()];		digest.doFinal(md4Bytes, 0);		System.out.println("bc Md5: " + Hex.encodeHexString(md4Bytes));	}	// ccMD5	public static void ccMd5() {		System.out.println("CC MD5: " + DigestUtils.md5Hex(STR.getBytes()));	}	// ccMD2	public static void ccMd2() {		System.out.println("CC MD2: " + DigestUtils.md2Hex(STR.getBytes()));	}}
运行的结果如下：
JDK MD5: 124a5c93d2b8d49e96f3e62aa758af78JDK MD2: 5f35106ba9b40d343bd33ee777e15bdabc Md4: 2182747909e25a336d8928bd4c5b7f31bc Md2: 5f35106ba9b40d343bd33ee777e15bdabc Md5: 124a5c93d2b8d49e96f3e62aa758af78CC MD5: 124a5c93d2b8d49e96f3e62aa758af78CC MD2: 5f35106ba9b40d343bd33ee777e15bda
6.新建消息摘要算法-SHA,以Jdk,bc,cc方式来进行实现：
package com.samlai.security;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import org.apache.commons.codec.binary.Hex;import org.apache.commons.codec.digest.DigestUtils;import org.bouncycastle.crypto.Digest;import org.bouncycastle.crypto.digests.SHA1Digest;import org.bouncycastle.crypto.digests.SHA224Digest;public class SHAMessageDigestStudy {	/**	 * 消息摘要算法--SHA	 * 	  安全散列算法	 * 	SHA-1,SHA-2(SHA-224,SHA-256,SHA-384,SHA-512)	 * 	算法       	摘要长度         实现方	 * 	SHA-1   160     JDK	 *  SHA-224 224     Bouncy Castle	 *  SHA-256 256     JDK	 *  SHA-384 384     JDK	 *  SHA-512 512     JDK	 */	private static String STR = "one type of security:SH-X";		public static void main(String[] args) {		jdkSHA1();		bcSHA1();		bcSHA224();		ccSHA1();	}		//Jdk的SHA1算法	public static void jdkSHA1() {		try {			MessageDigest md=MessageDigest.getInstance("SHA");			md.update(STR.getBytes());			System.out.println("jdk sha-1:"+Hex.encodeHexString(md.digest()));		} catch (NoSuchAlgorithmException e) {			e.printStackTrace();		}	}			//bc的SHA1算法	public static void bcSHA1() {		 Digest digest=new SHA1Digest();		 digest.update(STR.getBytes(),0,STR.getBytes().length);		 byte[] sha1Bytes=new byte[digest.getDigestSize()];		 digest.doFinal(sha1Bytes, 0);		 System.out.println("bc SHA-1:  "+Hex.encodeHexString(sha1Bytes));	}			//bc的SHA224算法	public static void bcSHA224() {		Digest digest=new SHA224Digest();		digest.update(STR.getBytes(),0,STR.getBytes().length);		byte[] sha1Bytes=new byte[digest.getDigestSize()];		digest.doFinal(sha1Bytes, 0);		System.out.println("bc SHA-224:  "+Hex.encodeHexString(sha1Bytes));	}		//cc的SHA1算法	public static void ccSHA1(){		System.out.println("cc SHA1 1: "+DigestUtils.sha1Hex(STR.getBytes()));		System.out.println("cc SHA1 2: "+DigestUtils.sha1Hex(STR));	}		}
运行的结果如下:
jdk sha-1:6f1f5458f87160e40de37b632c9f202521c38069bc SHA-1:  6f1f5458f87160e40de37b632c9f202521c38069bc SHA-224:  8809029976d18ef9564042591b9e02401d7fec17cece03f43b6e886acc SHA1 1: 6f1f5458f87160e40de37b632c9f202521c38069cc SHA1 2: 6f1f5458f87160e40de37b632c9f202521c38069
7.新建消息摘要算法-MAC,以Jdk,bc实现：
package com.samlai.security;import java.security.NoSuchAlgorithmException;import javax.crypto.KeyGenerator;import javax.crypto.Mac;import javax.crypto.SecretKey;import javax.crypto.spec.SecretKeySpec;import org.apache.commons.codec.binary.Hex;import org.bouncycastle.crypto.digests.MD5Digest;import org.bouncycastle.crypto.macs.HMac;import org.bouncycastle.crypto.params.KeyParameter;import org.omg.IOP.Encoding;//消息摘要算法-MACpublic class MACMessageDigest {	/**	 * MAC:Message Authentication Code	 *     含有密钥的散列函数算法	 *     融合MD,SHA	 *     	 -MD系列:HMACMD2,HmacMd4,HmacMd5	 *       -SHA系列：HmacSHA1,HmacSHA224,HmacSHA256,HmacSHA384,HmacSHA512	 *       应用如：SecureCRT	 */	private static String STR = "one type of security:MAC";	public static void main(String[] args) {		jdkHmacMd5();		bcHmacMd5();	}		//jdk hmac	public static void jdkHmacMd5(){		try {			//初始化KeyGenerator			KeyGenerator keyGenerator=KeyGenerator.getInstance("HmacMD5");			//产生密钥			SecretKey secretKey=keyGenerator.generateKey();			//获取密钥//			byte[] key=secretKey.getEncoded();			byte[] key=Hex.decodeHex(new char[]{'a','a','a','a','a','a','a','a'});						//还原密钥			SecretKey restoreSecretKey=new SecretKeySpec(key, "HmacMD5");			//实例化MAC			Mac mac=Mac.getInstance(restoreSecretKey.getAlgorithm());			//初始化Mac			mac.init(restoreSecretKey);			//执行摘要			byte[] hmacMD5Bytes=mac.doFinal(STR.getBytes());			System.out.println("jdk HmacMD5:"+Hex.encodeHexString(hmacMD5Bytes));		} catch (Exception e) {			e.printStackTrace();		}			}		//bc hmac	public static void bcHmacMd5(){		HMac hMac=new HMac(new MD5Digest());		hMac.init(new KeyParameter(org.bouncycastle.util.encoders.Hex.decode("aaaaaaaa")));		hMac.update(STR.getBytes(),0,STR.getBytes().length);		//执行摘要		byte[] hmacMD5bytes=new byte[hMac.getMacSize()];		hMac.doFinal(hmacMD5bytes, 0);		System.out.println("bc HmacMD5:"+Hex.encodeHexString(hmacMD5bytes));	}		}