2022年电子商务安全技术实验 .pdf

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1、键入文字 西安邮电大学电子商务安全技术实验一报告系部名称： 经济与管理学院学生姓名：韩振伟专业名称：电子商务班级：1101班学号：02112003 时间：2014-5-10 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 1 页，共 13 页 - - - - - - - - - 键入文字 一、实验目的 ：通过 JAVA 语言，来实现对称密钥加密算法，非对称秘钥加密算法对信息的加密解密，通过实际操作加深学生对对称密钥加密、非对称秘钥加密解密的理解。二、实验内容：安装 JDK，配置 Ja

2、va开发环境，加压 eclipse，编写对称秘钥的生成、对称密钥加密、解密的程序。编写非对称秘钥加密解密的程序，用私钥对信息进行加密，用公钥对信息进行解密，然后用公钥对信息进行加密，用私钥对信息进行解密。三、实验用到的主要技术及工具主要技术： Java、Bouncy Castle 主要工具： Eclipse四、开发步骤：1、安装 JDK ，配置 JAVA环境变量。2、解压 eclipse 。名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 2 页，共 13 页 - - - - - -

3、- - - 键入文字 3、在 eclipse中新建项目名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 3 页，共 13 页 - - - - - - - - - 键入文字 4、编写使用 DES 算法生成秘钥的程序。package org.zlex.chapter07_1; import java.security.Key; import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto

4、.KeyGenerator; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESKeySpec; public abstract class DESCoder public static final String KEY_ALGORITHM = DES; public static final String CIPHER_ALGORITHM = DES/ECB/PKCS5PADDING; private static Key toKey(byte ke

5、y) throws Exception DESKeySpec dks = new DESKeySpec(key); SecretKeyFactory keyFactory = SecretKeyFactory .getInstance(KEY_ALGORITHM); SecretKey secretKey = keyFactory.generateSecret(dks); return secretKey; public static byte decrypt(byte data, byte key) throws Exception Key k = toKey(key); Cipher ci

6、pher = Cipher.getInstance(CIPHER_ALGORITHM); cipher.init(Cipher.DECRYPT_MODE, k); return cipher.doFinal(data); public static byte encrypt(byte data, byte key) throws Exception Key k = toKey(key); Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM); cipher.init(Cipher.ENCRYPT_MODE, k); return cipher

7、.doFinal(data); public static byte initKey() throws Exception KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM); kg.init(56, new SecureRandom(); SecretKey secretKey = kg.generateKey(); return secretKey.getEncoded(); 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - -

8、- 第 4 页，共 13 页 - - - - - - - - - 键入文字 package org.zlex.chapter07_1; import static org.junit.Assert.*; import mons.codec.binary.Base64; import org.junit.Test; public class DESCoderTest Test public final void test() throws Exception String inputStr = DES; byte inputData = inputStr.getBytes(); System.e

9、rr.println(原文:t + inputStr); byte key = DESCoder.initKey(); System.err.println(密钥:t + Base64.encodeBase64String(key); inputData = DESCoder.encrypt(inputData, key); System.err.println(加密后 :t + Base64.encodeBase64String(inputData); byte outputData = DESCoder.decrypt(inputData, key); String outputStr =

10、 new String(outputData); System.err.println(解密后 :t + outputStr); assertEquals(inputStr, outputStr); 5、使用生成的秘钥对“电子商务安全技术”进行加密。6、用第 4 步骤中生成的秘钥对第5 部中生成的加密后的内容进行解密。名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 5 页，共 13 页 - - - - - - - - - 键入文字 7、使用 AES算法重复 4-6 步骤。packag

11、e org.zlex.chapter07_3; import java.security.Key; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; public abstract class AESCoder public static final String KEY_ALGORITHM = AES; public static final String CIPHER_ALGO

12、RITHM = AES/ECB/PKCS5Padding; private static Key toKey(byte key) throws Exception SecretKey secretKey = new SecretKeySpec(key, KEY_ALGORITHM); return secretKey; public static byte decrypt(byte data, byte key) throws Exception Key k = toKey(key); Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);

13、cipher.init(Cipher.DECRYPT_MODE, k); return cipher.doFinal(data); public static byte encrypt(byte data, byte key) throws Exception Key k = toKey(key); Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM); cipher.init(Cipher.ENCRYPT_MODE, k); return cipher.doFinal(data); public static byte initKey()

14、throws Exception KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM); kg.init(128); SecretKey secretKey = kg.generateKey(); return secretKey.getEncoded(); package org.zlex.chapter07_3; import static org.junit.Assert.*; import mons.codec.binary.Base64; import org.junit.Test; public class AESCod

15、erTest 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 6 页，共 13 页 - - - - - - - - - 键入文字 Test public final void test() throws Exception String inputStr = AES; byte inputData = inputStr.getBytes(); System.err.println(原文:t + inputStr); byte key = AESCoder.initKey(); Sys

16、tem.err.println(密钥:t + Base64.encodeBase64String(key); inputData = AESCoder.encrypt(inputData, key); System.err.println(加密后 :t + Base64.encodeBase64String(inputData); byte outputData = AESCoder.decrypt(inputData, key); String outputStr = new String(outputData); System.err.println(解密后 :t + outputStr)

17、; assertEquals(inputStr, outputStr); 8、使用 RSA算法生成公钥和私钥。package org.zlex.chapter08_2; import java.security.Key; import java.security.KeyFactory; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.security.PrivateKey; import java.security.PublicKey; import java.security.i

18、nterfaces.RSAPrivateKey; import java.security.interfaces.RSAPublicKey; import java.security.spec.PKCS8EncodedKeySpec; import java.security.spec.X509EncodedKeySpec; import java.util.HashMap; import java.util.Map; import javax.crypto.Cipher; public abstract class RSACoder public static final String KE

19、Y_ALGORITHM = RSA; private static final String PUBLIC_KEY = RSAPublicKey; private static final String PRIVATE_KEY = RSAPrivateKey; private static final int KEY_SIZE = 512; public static byte decryptByPrivateKey(byte data, byte key) throws Exception PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8Encoded

20、KeySpec(key); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PrivateKey privateKey = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm(); cipher.init(Cipher.DECRYPT_MODE, privateKey); return cipher.doFinal(data); 名师资料总结 - - -精品资料欢迎下载

21、 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 7 页，共 13 页 - - - - - - - - - 键入文字 public static byte decryptByPublicKey(byte data, byte key) throws Exception X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(key); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Publi

22、cKey publicKey = keyFactory.generatePublic(x509KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm(); cipher.init(Cipher.DECRYPT_MODE, publicKey); return cipher.doFinal(data); public static byte encryptByPublicKey(byte data, byte key) throws Exception X509EncodedKeySpec x509KeySpec

23、= new X509EncodedKeySpec(key); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PublicKey publicKey = keyFactory.generatePublic(x509KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm(); cipher.init(Cipher.ENCRYPT_MODE, publicKey); return cipher.doFinal(data); public s

24、tatic byte encryptByPrivateKey(byte data, byte key) throws Exception PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(key); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PrivateKey privateKey = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(ke

25、yFactory.getAlgorithm(); cipher.init(Cipher.ENCRYPT_MODE, privateKey); return cipher.doFinal(data); public static byte getPrivateKey(Map keyMap) throws Exception Key key = (Key) keyMap.get(PRIVATE_KEY); return key.getEncoded(); public static byte getPublicKey(Map keyMap) throws Exception Key key = (

26、Key) keyMap.get(PUBLIC_KEY); return key.getEncoded(); public static Map initKey() throws Exception KeyPairGenerator keyPairGen = KeyPairGenerator .getInstance(KEY_ALGORITHM); keyPairGen.initialize(KEY_SIZE); KeyPair keyPair = keyPairGen.generateKeyPair(); RSAPublicKey publicKey = (RSAPublicKey) keyP

27、air.getPublic(); RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 8 页，共 13 页 - - - - - - - - - 键入文字 Map keyMap = new HashMap(2); keyMap.put(PUBLIC_KEY, publicKey); keyMap.put(PRIVATE_KEY, privateKey); ret

28、urn keyMap; package org.zlex.chapter08_2; import static org.junit.Assert.*; import mons.codec.binary.Base64; import org.junit.Before; import org.junit.Test; import java.util.Map; public class RSACoderTest private byte publicKey; private byte privateKey; Before public void initKey() throws Exception

29、Map keyMap = RSACoder.initKey(); publicKey = RSACoder.getPublicKey(keyMap); privateKey = RSACoder.getPrivateKey(keyMap); System.err.println(公钥: n + Base64.encodeBase64String(publicKey); System.err.println(私钥： n + Base64.encodeBase64String(privateKey); Test public void test() throws Exception System.

30、err.println(n-私钥加密公钥解密 -); String inputStr1 = RSA加密算法 ; byte data1 = inputStr1.getBytes(); System.err.println(原文:n + inputStr1); / 加密byte encodedData1 = RSACoder.encryptByPrivateKey(data1, privateKey); System.err.println(加密后:n + Base64.encodeBase64String(encodedData1); byte decodedData1 = RSACoder.d

31、ecryptByPublicKey(encodedData1, publicKey); String outputStr1 = new String(decodedData1); System.err.println(解密后 :n + outputStr1); assertEquals(inputStr1, outputStr1); System.err.println(n-公钥加密私钥解密 -); String inputStr2 = RSA Encypt Algorithm; byte data2 = inputStr2.getBytes(); System.err.println(原文:

32、n + inputStr2); byte encodedData2 = RSACoder.encryptByPublicKey(data2, publicKey); 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 9 页，共 13 页 - - - - - - - - - 键入文字 System.err.println(加密后:n + Base64.encodeBase64String(encodedData2); byte decodedData2 = RSACoder.decryp

33、tByPrivateKey(encodedData2, privateKey); String outputStr2 = new String(decodedData2); System.err.println(解密后 : + outputStr2); assertEquals(inputStr2, outputStr2); 9、用公钥对“电子商务安全技术RSA ”进行加密。10、用私钥对第九步中加密的信息进行解密。11、用生成的私钥对“电子商务安全技术RSA ”进行加密。12、用公钥对 11步中的信息进行解密。名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - -

34、- - - - - - - - 名师精心整理 - - - - - - - 第 10 页，共 13 页 - - - - - - - - - 键入文字 13、请把你的公钥发送给你旁边的同学，让该同学用公钥进行加密，然后再把加密后的信息发送给你，你再用你的私钥对信息进行解密。名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 11 页，共 13 页 - - - - - - - - - 键入文字 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 12 页，共 13 页 - - - - - - - - - 键入文字 名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 13 页，共 13 页 - - - - - - - - -