Java前端Rsa公钥加密，后端Rsa私钥解密(目前还不支持中文加密解密，其他都行)
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Base64工具类，可以让rsa编码的乱码变成一串字符序列
1 package com.utils; 2 3 import java.io.ByteArrayInputStream; 4 import java.io.ByteArrayOutputStream; 5 import java.io.File; 6 import java.io.FileInputStream; 7 import java.io.FileOutputStream; 8 import java.io.InputStream; 9 import java.io.OutputStream; 10 11 import it.sauronsoftware.base64.Base64; 12 13 /** */ 14 /** 15 * <p> 16 * BASE64编码解码工具包 17 * </p> 18 * <p> 19 * 依赖javabase64-1.3.1.jar 20 * </p> 21 * 22 * @author IceWee 23 * @date 2012-5-19 24 * @version 1.0 25 */ 26 public class Base64Utils { 27 28 /** */ 29 /** 30 * 文件读取缓冲区大小 31 */ 32 private static final int CACHE_SIZE = 1024; 33 34 /** */ 35 /** 36 * <p> 37 * BASE64字符串解码为二进制数据 38 * </p> 39 * 40 * @param base64 41 * @return 42 * @throws Exception 43 */ 44 public static byte[] decode(String base64) throws Exception { 45 return Base64.decode(base64.getBytes()); 46 } 47 48 /** */ 49 /** 50 * <p> 51 * 二进制数据编码为BASE64字符串 52 * </p> 53 * 54 * @param bytes 55 * @return 56 * @throws Exception 57 */ 58 public static String encode(byte[] bytes) throws Exception { 59 return new String(Base64.encode(bytes)); 60 } 61 62 /** */ 63 /** 64 * <p> 65 * 将文件编码为BASE64字符串 66 * </p> 67 * <p> 68 * 大文件慎用，可能会导致内存溢出 69 * </p> 70 * 71 * @param filePath 72 * 文件绝对路径 73 * @return 74 * @throws Exception 75 */ 76 public static String encodeFile(String filePath) throws Exception { 77 byte[] bytes = fileToByte(filePath); 78 return encode(bytes); 79 } 80 81 /** */ 82 /** 83 * <p> 84 * BASE64字符串转回文件 85 * </p> 86 * 87 * @param filePath 88 * 文件绝对路径 89 * @param base64 90 * 编码字符串 91 * @throws Exception 92 */ 93 public static void decodeToFile(String filePath, String base64) throws Exception { 94 byte[] bytes = decode(base64); 95 byteArrayToFile(bytes, filePath); 96 } 97 98 /** */ 99 /** 100 * <p> 101 * 文件转换为二进制数组 102 * </p> 103 * 104 * @param filePath 105 * 文件路径 106 * @return 107 * @throws Exception 108 */ 109 public static byte[] fileToByte(String filePath) throws Exception { 110 byte[] data = new byte[0]; 111 File file = new File(filePath); 112 if (file.exists()) { 113 FileInputStream in = new FileInputStream(file); 114 ByteArrayOutputStream out = new ByteArrayOutputStream(2048); 115 byte[] cache = new byte[CACHE_SIZE]; 116 int nRead = 0; 117 while ((nRead = in.read(cache)) != -1) { 118 out.write(cache, 0, nRead); 119 out.flush(); 120 } 121 out.close(); 122 in.close(); 123 data = out.toByteArray(); 124 } 125 return data; 126 } 127 128 /** */ 129 /** 130 * <p> 131 * 二进制数据写文件 132 * </p> 133 * 134 * @param bytes 135 * 二进制数据 136 * @param filePath 137 * 文件生成目录 138 */ 139 public static void byteArrayToFile(byte[] bytes, String filePath) throws Exception { 140 InputStream in = new ByteArrayInputStream(bytes); 141 File destFile = new File(filePath); 142 if (!destFile.getParentFile().exists()) { 143 destFile.getParentFile().mkdirs(); 144 } 145 destFile.createNewFile(); 146 OutputStream out = new FileOutputStream(destFile); 147 byte[] cache = new byte[CACHE_SIZE]; 148 int nRead = 0; 149 while ((nRead = in.read(cache)) != -1) { 150 out.write(cache, 0, nRead); 151 out.flush(); 152 } 153 out.close(); 154 in.close(); 155 } 156 157 }
RsaUtil工具类，可以调用里面的方法，产生公钥私钥对，和采用公钥加密，私钥加密等
1 package com.utils; 2 3 import java.io.ByteArrayOutputStream; 4 import java.security.Key; 5 import java.security.KeyFactory; 6 import java.security.KeyPair; 7 import java.security.KeyPairGenerator; 8 import java.security.PrivateKey; 9 import java.security.PublicKey; 10 import java.security.Signature; 11 import java.security.interfaces.RSAPrivateKey; 12 import java.security.interfaces.RSAPublicKey; 13 import java.security.spec.PKCS8EncodedKeySpec; 14 import java.security.spec.X509EncodedKeySpec; 15 import java.util.HashMap; 16 import java.util.Map; 17 18 import javax.crypto.Cipher; 19 20 /** */ 21 /** 22 * <p> 23 * RSA公钥/私钥/签名工具包 24 * </p> 25 * <p> 26 * 罗纳德·李维斯特（Ron [R]ivest）、阿迪·萨莫尔（Adi [S]hamir）和伦纳德·阿德曼（Leonard [A]dleman） 27 * </p> 28 * <p> 29 * 字符串格式的密钥在未在特殊说明情况下都为BASE64编码格式<br/> 30 * 由于非对称加密速度极其缓慢，一般文件不使用它来加密而是使用对称加密，<br/> 31 * 非对称加密算法可以用来对对称加密的密钥加密，这样保证密钥的安全也就保证了数据的安全 32 * </p> 33 * 34 * @author IceWee 35 * @date 2012-4-26 36 * @version 1.0 37 */ 38 public class RSAUtils { 39 40 /** */ 41 /** 42 * 加密算法RSA 43 */ 44 public static final String KEY_ALGORITHM = "RSA"; 45 46 /** */ 47 /** 48 * 签名算法 49 */ 50 public static final String SIGNATURE_ALGORITHM = "MD5withRSA"; 51 52 /** */ 53 /** 54 * 获取公钥的key 55 */ 56 private static final String PUBLIC_KEY = "RSAPublicKey"; 57 58 /** */ 59 /** 60 * 获取私钥的key 61 */ 62 private static final String PRIVATE_KEY = "RSAPrivateKey"; 63 64 /** */ 65 /** 66 * RSA最大加密明文大小 67 */ 68 private static final int MAX_ENCRYPT_BLOCK = 117; 69 70 /** */ 71 /** 72 * RSA最大解密密文大小 73 */ 74 private static final int MAX_DECRYPT_BLOCK = 128; 75 76 /** */ 77 /** 78 * <p> 79 * 生成密钥对(公钥和私钥) 80 * </p> 81 * 82 * @return 83 * @throws Exception 84 */ 85 public static Map<String, Object> genKeyPair() throws Exception { 86 KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM); 87 keyPairGen.initialize(1024); 88 KeyPair keyPair = keyPairGen.generateKeyPair(); 89 RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic(); 90 RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); 91 Map<String, Object> keyMap = new HashMap<String, Object>(2); 92 keyMap.put(PUBLIC_KEY, publicKey); 93 keyMap.put(PRIVATE_KEY, privateKey); 94 return keyMap; 95 } 96 97 /** */ 98 /** 99 * <p> 100 * 用私钥对信息生成数字签名 101 * </p> 102 * 103 * @param data 104 * 已加密数据 105 * @param privateKey 106 * 私钥(BASE64编码) 107 * 108 * @return 109 * @throws Exception 110 */ 111 public static String sign(byte[] data, String privateKey) throws Exception { 112 byte[] keyBytes = Base64Utils.decode(privateKey); 113 PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); 114 KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); 115 PrivateKey privateK = keyFactory.generatePrivate(pkcs8KeySpec); 116 Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); 117 signature.initSign(privateK); 118 signature.update(data); 119 return Base64Utils.encode(signature.sign()); 120 } 121 122 /** */ 123 /** 124 * <p> 125 * 校验数字签名 126 * </p> 127 * 128 * @param data 129 * 已加密数据 130 * @param publicKey 131 * 公钥(BASE64编码) 132 * @param sign 133 * 数字签名 134 * 135 * @return 136 * @throws Exception 137 * 138 */ 139 public static boolean verify(byte[] data, String publicKey, String sign) throws Exception { 140 byte[] keyBytes = Base64Utils.decode(publicKey); 141 X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes); 142 KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); 143 PublicKey publicK = keyFactory.generatePublic(keySpec); 144 Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); 145 signature.initVerify(publicK); 146 signature.update(data); 147 return signature.verify(Base64Utils.decode(sign)); 148 } 149 150 /** */ 151 /** 152 * <P> 153 * 私钥解密 154 * </p> 155 * 156 * @param encryptedData 157 * 已加密数据 158 * @param privateKey 159 * 私钥(BASE64编码) 160 * @return 161 * @throws Exception 162 */ 163 public static byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey) throws Exception { 164 byte[] keyBytes = Base64Utils.decode(privateKey); 165 PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); 166 KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); 167 Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); 168 Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); 169 cipher.init(Cipher.DECRYPT_MODE, privateK); 170 int inputLen = encryptedData.length; 171 ByteArrayOutputStream out = new ByteArrayOutputStream(); 172 int offSet = 0; 173 byte[] cache; 174 int i = 0; 175 // 对数据分段解密 176 while (inputLen - offSet > 0) { 177 if (inputLen - offSet > MAX_DECRYPT_BLOCK) { 178 cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); 179 } else { 180 cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); 181 } 182 out.write(cache, 0, cache.length); 183 i++; 184 offSet = i * MAX_DECRYPT_BLOCK; 185 } 186 byte[] decryptedData = out.toByteArray(); 187 out.close(); 188 return decryptedData; 189 } 190 191 /** */ 192 /** 193 * <p> 194 * 公钥解密 195 * </p> 196 * 197 * @param encryptedData 198 * 已加密数据 199 * @param publicKey 200 * 公钥(BASE64编码) 201 * @return 202 * @throws Exception 203 */ 204 public static byte[] decryptByPublicKey(byte[] encryptedData, String publicKey) throws Exception { 205 byte[] keyBytes = Base64Utils.decode(publicKey); 206 X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); 207 KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); 208 Key publicK = keyFactory.generatePublic(x509KeySpec); 209 Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); 210 cipher.init(Cipher.DECRYPT_MODE, publicK); 211 int inputLen = encryptedData.length; 212 ByteArrayOutputStream out = new ByteArrayOutputStream(); 213 int offSet = 0; 214 byte[] cache; 215 int i = 0; 216 // 对数据分段解密 217 while (inputLen - offSet > 0) { 218 if (inputLen - offSet > MAX_DECRYPT_BLOCK) { 219 cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); 220 } else { 221 cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); 222 } 223 out.write(cache, 0, cache.length); 224 i++; 225 offSet = i * MAX_DECRYPT_BLOCK; 226 } 227 byte[] decryptedData = out.toByteArray(); 228 out.close(); 229 return decryptedData; 230 } 231 232 /** */ 233 /** 234 * <p> 235 * 公钥加密 236 * </p> 237 * 238 * @param data 239 * 源数据 240 * @param publicKey 241 * 公钥(BASE64编码) 242 * @return 243 * @throws Exception 244 */ 245 public static byte[] encryptByPublicKey(byte[] data, String publicKey) throws Exception { 246 byte[] keyBytes = Base64Utils.decode(publicKey); 247 X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); 248 KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); 249 Key publicK = keyFactory.generatePublic(x509KeySpec); 250 // 对数据加密 251 Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); 252 cipher.init(Cipher.ENCRYPT_MODE, publicK); 253 int inputLen = data.length; 254 ByteArrayOutputStream out = new ByteArrayOutputStream(); 255 int offSet = 0; 256 byte[] cache; 257 int i = 0; 258 // 对数据分段加密 259 while (inputLen - offSet > 0) { 260 if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { 261 cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); 262 } else { 263 cache = cipher.doFinal(data, offSet, inputLen - offSet); 264 } 265 out.write(cache, 0, cache.length); 266 i++; 267 offSet = i * MAX_ENCRYPT_BLOCK; 268 } 269 byte[] encryptedData = out.toByteArray(); 270 out.close(); 271 return encryptedData; 272 } 273 274 /** */ 275 /** 276 * <p> 277 * 私钥加密 278 * </p> 279 * 280 * @param data 281 * 源数据 282 * @param privateKey 283 * 私钥(BASE64编码) 284 * @return 285 * @throws Exception 286 */ 287 public static byte[] encryptByPrivateKey(byte[] data, String privateKey) throws Exception { 288 byte[] keyBytes = Base64Utils.decode(privateKey); 289 PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); 290 KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); 291 Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); 292 Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); 293 cipher.init(Cipher.ENCRYPT_MODE, privateK); 294 int inputLen = data.length; 295 ByteArrayOutputStream out = new ByteArrayOutputStream(); 296 int offSet = 0; 297 byte[] cache; 298 int i = 0; 299 // 对数据分段加密 300 while (inputLen - offSet > 0) { 301 if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { 302 cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); 303 } else { 304 cache = cipher.doFinal(data, offSet, inputLen - offSet); 305 } 306 out.write(cache, 0, cache.length); 307 i++; 308 offSet = i * MAX_ENCRYPT_BLOCK; 309 } 310 byte[] encryptedData = out.toByteArray(); 311 out.close(); 312 return encryptedData; 313 } 314 315 /** */ 316 /** 317 * <p> 318 * 获取私钥 319 * </p> 320 * 321 * @param keyMap 322 * 密钥对 323 * @return 324 * @throws Exception 325 */ 326 public static String getPrivateKey(Map<String, Object> keyMap) throws Exception { 327 Key key = (Key) keyMap.get(PRIVATE_KEY); 328 return Base64Utils.encode(key.getEncoded()); 329 } 330 331 /** */ 332 /** 333 * <p> 334 * 获取公钥 335 * </p> 336 * 337 * @param keyMap 338 * 密钥对 339 * @return 340 * @throws Exception 341 */ 342 public static String getPublicKey(Map<String, Object> keyMap) throws Exception { 343 Key key = (Key) keyMap.get(PUBLIC_KEY); 344 return Base64Utils.encode(key.getEncoded()); 345 } 346 347 /** 348 * java端公钥加密 349 */ 350 public static String encryptedDataOnJava(String data, String PUBLICKEY) { 351 try { 352 data = Base64Utils.encode(encryptByPublicKey(data.getBytes(), PUBLICKEY)); 353 } catch (Exception e) { 354 // TODO Auto-generated catch block 355 e.printStackTrace(); 356 } 357 return data; 358 } 359 360 /** 361 * java端私钥解密 362 */ 363 public static String decryptDataOnJava(String data, String PRIVATEKEY) { 364 String temp = ""; 365 try { 366 byte[] rs = Base64Utils.decode(data); 367 temp = new String(RSAUtils.decryptByPrivateKey(rs, PRIVATEKEY)); 368 369 } catch (Exception e) { 370 e.printStackTrace(); 371 } 372 return temp; 373 } 374 375 }
json工具类
1 package com.utils; 2 3 import com.google.gson.Gson; 4 import com.google.gson.GsonBuilder; 5 import com.google.gson.JsonNull; 6 7 public class JsonUtil { 8 9 private static Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").serializeNulls().create(); 10 11 /** 12 * @MethodName : toJson 13 * @Description : 将对象转为JSON串，此方法能够满足大部分需求 14 * @param src 15 * :将要被转化的对象 16 * @return :转化后的JSON串 17 */ 18 public static String toJson(Object src) { 19 if (src == null) { 20 return gson.toJson(JsonNull.INSTANCE); 21 } 22 return gson.toJson(src); 23 } 24 }
到这一步我们的工具类准备的差不多了，可以开始进入我们的主题了，java端Rsa测试类和web端交互的demo了
Rsa测试java测试类
1 package com.test; 2 3 import java.util.Map; 4 5 import org.junit.Test; 6 7 import com.utils.Base64Utils; 8 import com.utils.RSAUtils; 9 10 public class RSATester { 11 12 static String publicKey; 13 static String privateKey; 14 15 static { 16 try { 17 Map<String, Object> keyMap = RSAUtils.genKeyPair(); 18 publicKey = RSAUtils.getPublicKey(keyMap); 19 privateKey = RSAUtils.getPrivateKey(keyMap); 20 System.err.println("公钥: \n\r" + publicKey); 21 System.err.println("私钥： \n\r" + privateKey); 22 } catch (Exception e) { 23 e.printStackTrace(); 24 } 25 } 26 27 public static void main(String[] args) throws Exception { 28 testJavaRsa(); 29 } 30 31 @Test 32 public void tests() throws Exception { 33 String data = "hNYdT0/8wxljGvLQVPYUDeoWS217rmB5msKOljb6OBsOhdL1Domxt6Sy3BqdGqS3StGJuZuQ9wEFzGdyoTQ7IRiC0gRrkLuxvCUq8FANt1JpJCBqvzLdQD/ygCjkJMWWkMU4EFUW3xYkAsidqM8Zynhpk+mdja3789Ng4s68xJI="; 34 35 String privateKey = "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"; 36 byte[] rs = Base64Utils.decode(data); 37 38 String r1 = new String(RSAUtils.decryptByPrivateKey(rs, privateKey)); 39 40 System.out.println("\r\n\r\n" + r1 + "okb"); 41 42 } 43 44 static void testSign() throws Exception { 45 System.err.println("私钥加密——公钥解密"); 46 String source = "32232"; 47 System.out.println("原文字：\r\n" + source); 48 byte[] data = source.getBytes(); 49 byte[] encodedData = RSAUtils.encryptByPrivateKey(data, privateKey); 50 System.out.println("加密后：\r\n" + new String(encodedData)); 51 byte[] decodedData = RSAUtils.decryptByPublicKey(encodedData, publicKey); 52 String target = new String(decodedData); 53 System.out.println("解密后: \r\n" + target); 54 System.err.println("私钥签名——公钥验证签名"); 55 String sign = RSAUtils.sign(encodedData, privateKey); 56 System.err.println("签名:\r" + sign); 57 boolean status = RSAUtils.verify(encodedData, publicKey, sign); 58 System.err.println("验证结果:\r" + status); 59 } 60 61 static void test() throws Exception { 62 System.err.println("公钥加密——私钥解密"); 63 String source = "这是一行没有任何意义的文字，你看完了等于没看，不是吗？"; 64 System.out.println("\r加密前文字：\r\n" + source); 65 byte[] data = source.getBytes(); 66 byte[] encodedData = RSAUtils.encryptByPublicKey(data, publicKey); 67 System.out.println("加密后文字：\r\n" + new String(encodedData)); 68 System.out.println("----------------:base64处理：" + Base64Utils.encode(encodedData)); 69 byte[] decodedData = RSAUtils.decryptByPrivateKey(encodedData, privateKey); 70 String target = new String(decodedData); 71 System.out.println("解密后文字: \r\n" + target); 72 } 73 74 /* 75 * 测试自己封装java端加密和解密的方法 76 */ 77 78 static void testJavaRsa() { 79 String PUBLICKEY = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCcd+0zTY9Gn94iqkQJTlxYnEnCeFsLkk0a7hoAvi2B74VzDVV3xH0ZO9RkXvo1SgCB+uzbEWdrgQkzTqyjfTtgOguu3OnkVxIMJF34ibchTY0LWHGxq1m2gLGuVVqrlu1LtdV0X7xo/5zc8Mr+46veWb86kSpqe6rOAm69WWo5GwIDAQAB"; 80 String PRIVATEKEY = "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"; 81 String data = "你好啊，冯老师！s 223 [email protected]"; 82 data = RSAUtils.encryptedDataOnJava(data, PUBLICKEY); 83 System.out.println("加密数据：" + data); 84 85 System.out.println("解密数据：" + RSAUtils.decryptDataOnJava(data, PRIVATEKEY)); 86 } 87 88 static void testFrontEncrptAndAfterDecrypt() { 89 String PRIVATEKEY = "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"; 90 String data = "FBGU7sQfpSfCgB2hqFuIqkivEUHVRHD8JFdyxYeWqQHsTj9UEuVmvi28n1fOHRwW+3aZD3ttdzfUHWiXD2NErcX/CYs5BtSXT7RcJfWWcXvegq5BBDEAJCADWCRdYnblN+SLUC+ctDXcLw4xmjwAajowSzhCfY/lU3TdnJjO488="; 91 System.out.println("解密数据：" + RSAUtils.decryptDataOnJava(data, PRIVATEKEY)); 92 } 93 94 }
前端加密jsp页面
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 <script src="js/jquery-2.1.3.js"></script> 9 <script src="js/jsencrypt.min.js"></script> 10 </head> 11 <body> 12 13 <script type="text/javascript"> 14 $(function() { 15 $("#bt").click( 16 function() { 17 18 var encrypt = new JSEncrypt(); 19 encrypt.setPublicKey($("#publickey").val()); 20 encrypt.setPrivateKey($("#privatekey").val()); 21 var password = $("#password").val(); 22 var uname = $("#uname").val(); 23 password = encrypt.encrypt(password); 24 25 uname = encrypt.encrypt(uname); 26 $("#jmName").val(uname); 27 $("#jmPasswrod").val(password); 28 var jsonData = { 29 "password" : password, 30 "uname" : uname 31 }; 32 33 $.post("jiemi.do", jsonData, function(result) { 34 alert("解密的用户名：" + result.uname + "\n" + "解密的密码：" 35 + result.password); 36 37 }, ‘json‘); 38 }); 39 }); 40 </script> 41 <h2>公钥：</h2> 42 <textarea id="publickey" rows="5" cols="45">MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCJ9s1qlOyv9qpuaTqauW6fUftzE50rVk3yVPZwv1aO1Ch/XSEz76xCwkyvqpaqceRXrPpdBmO5+ruJ+I8osOHo7L5GWEOcMOO+8izp9hXKBBrmRMD4Egpn00k9DhVIEKp/vyddZPS/doxB8onhN6poTJDLdFLFVEicMf52caN9GQIDAQAB 43 </textarea> 44 <h2>私钥</h2> 45 <textarea rows="10" cols="45" id="privatekey">MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBAIn2zWqU7K/2qm5pOpq5bp9R+3MTnStWTfJU9nC/Vo7UKH9dITPvrELCTK+qlqpx5Fes+l0GY7n6u4n4jyiw4ejsvkZYQ5ww477yLOn2FcoEGuZEwPgSCmfTST0OFUgQqn+/J11k9L92jEHyieE3qmhMkMt0UsVUSJwx/nZxo30ZAgMBAAECgYBD3YHigeuEC4R+14iaf8jo2j0kuGtB3Cxvnlez0otTqw1YyYkBsU49cLKkXvfKVEgM0Ow/QltgKvSBxCE31PrrDka5TygVMqqA/IM7NrDvjUcGLjyoeNmLA8660fWcDxUTlAGN5kxIvUATayVwKVflpWPWu0FPKsWrZustnEo+4QJBAMCmYsWqAKWYMVRXFP3/XGRfio8DV793TOckyBSN9eh8UhgoZyT3u7oeHmDJEwm4aNMHlg1Pcdc6tNsvi1FRCiUCQQC3VNzfF4xOtUgX7vWPL8YVljLuXmy12iVYmg6ofu9l31nwM9FLQ1TRFglvF5LWrIXTQb07PgGd5DJMAQWGsqLlAkAPE7Z9M73TN+L8b8hDzJ1leZi1cpSGdoa9PEKwYR/SrxAZtefEm+LEQSEtf+8OfrEtetWCeyo0pvKKiOEFXytFAkEAgynL/DC0yXsZYUYtmYvshHU5ayFTVagFICbYZeSrEo+BoUDxdI9vl0fU6A5NmBlGhaZ65G+waG5jLc1tTrlvoQJAXBEoPcBNAosiZHQfYBwHqU6mJ9/ZacJh3MtJzGGebfEwJgtln5b154iANqNWXpySBLvkK+Boq7FYRiD83pqmUg==</textarea> 46 <hr /> 47 <form> 48 用户名：<input type="text" name="uname" id="uname" /> 密码：<input 49 type="text" name="password" id="password" /> 50 <hr /> 51 用户密文 52 <textarea id="jmName"> 53 </textarea> 54 密码密文 55 <textarea id="jmPasswrod"> 56 </textarea> 57 <input type="button" id="bt" value="提交" /> 58 </form> 59 60 </body> 61 </html>
后端servlet解密
1 package com; 2 3 import java.io.IOException; 4 import java.util.HashMap; 5 6 import javax.servlet.ServletException; 7 import javax.servlet.http.HttpServlet; 8 import javax.servlet.http.HttpServletRequest; 9 import javax.servlet.http.HttpServletResponse; 10 11 import com.utils.JsonUtil; 12 import com.utils.RSAUtils; 13 14 /** 15 * Servlet implementation class JieMiServlet 16 */ 17 public class JieMiServlet extends HttpServlet { 18 private static final long serialVersionUID = 1L; 19 20 protected void doGet(HttpServletRequest request, HttpServletResponse response) 21 throws ServletException, IOException { 22 doPost(request, response); 23 } 24 25 protected void doPost(HttpServletRequest request, HttpServletResponse response) 26 throws ServletException, IOException { 27 // 获取数据 28 String uname = request.getParameter("uname"); 29 String password = request.getParameter("password"); 30 String PRIVATEKEY = "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"; 31 // 解密 32 uname = RSAUtils.decryptDataOnJava(uname, PRIVATEKEY); 33 password = RSAUtils.decryptDataOnJava(password, PRIVATEKEY); 34 // 用map封装返回的数据 35 HashMap<String, Object> result = new HashMap<String, Object>(); 36 result.put("uname", uname); 37 result.put("password", password); 38 39 response.getWriter().print(JsonUtil.toJson(result)); 40 41 } 42 43 }
需要注意的是：前端需要加入jquery-2.1.3.js和jsencrypt.min.js库，后端需要加入javabase64-1.3.1.jar和gson-2.5.jar(方便json返回)
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