1 package com.dl.network_flow.utils;
2
3 import javax.crypto.Cipher;
4 import javax.crypto.spec.IvParameterSpec;
5 import javax.crypto.spec.SecretKeySpec;
6
7 import sun.misc.BASE64Decoder;
8
9 public class AES256Encryption {
10
11 // private static String key = "H5gOs1ZshKZ6WikN";
12 // private static String iv = "8888159601152533";
13
14 private static final String key = PropertyUtils.getValue("secreKey");
15 private static final String iv = PropertyUtils.getValue("vector");
16
17 private static final String KEY_ALGORITHM = "AES";
18 private static final String CIPHER_ALGORITHM = "AES/CBC/PKCS5Padding";
19
20 /**
21 * 加密 encrypt
22 * @time 2016年2月25日下午4:57:15
23 * @packageName com.dl.network_flow.utils
24 * @return
25 * @throws Exception
26 */
27 public static byte[] encrypt(String data) throws Exception {
28 try {
29
30 Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
31 int blockSize = cipher.getBlockSize();
32
33 byte[] dataBytes = data.getBytes();
34 int plaintextLength = dataBytes.length;
35 if (plaintextLength % blockSize != 0) {
36 plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
37 }
38 byte[] plaintext = new byte[plaintextLength];
39 System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
40
41 SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), KEY_ALGORITHM);
42 IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
43
44 cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
45 byte[] encrypted = cipher.doFinal(plaintext);
46
47 return encrypted;
48
49 } catch (Exception e) {
50 e.printStackTrace();
51 return null;
52 }
53 }
54
55
56 public static String encodeBytes(byte[] bytes){
57 StringBuffer sbfBuffer = new StringBuffer();
58 for (int i = 0; i < bytes.length; i++) {
59 sbfBuffer.append((char)(((bytes[i]>>4)&0xf)+((int)'a')));
60 sbfBuffer.append((char)(((bytes[i])&0xf)+((int)'a')));
61 }
62 return sbfBuffer.toString();
63 }
64
65
66
67 /**
68 * 解密 desEncrypt
69 *
70 * @time 2016年2月25日下午4:57:20
71 * @packageName com.dl.network_flow.utils
72 * @param data
73 * @return
74 * @throws Exception
75 */
76 public static String desEncrypt(String data) throws Exception {
77 try {
78 byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);
79
80 Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
81 SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), KEY_ALGORITHM);
82 IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
83
84 cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
85
86 byte[] original = cipher.doFinal(encrypted1);
87 String originalString = new String(original);
88 System.out.println(originalString.length());
89 return originalString;
90 } catch (Exception e) {
91 e.printStackTrace();
92 return null;
93 }
94 }
95 }
1 package com.dl.network_flow.utils;
2
3 import java.io.UnsupportedEncodingException;
4 import java.security.InvalidKeyException;
5 import java.security.MessageDigest;
6 import java.security.NoSuchAlgorithmException;
7 import java.security.SecureRandom;
8 import javax.crypto.BadPaddingException;
9 import javax.crypto.Cipher;
10 import javax.crypto.IllegalBlockSizeException;
11 import javax.crypto.KeyGenerator;
12 import javax.crypto.NoSuchPaddingException;
13 import javax.crypto.SecretKey;
14 import javax.crypto.spec.SecretKeySpec;
15
16 public class DecriptTest {
17
18 public static String SHA1(String decript) {
19 try {
20 MessageDigest digest = java.security.MessageDigest.getInstance("SHA-1");
21 digest.update(decript.getBytes());
22 byte messageDigest[] = digest.digest();
23 // Create Hex String
24 StringBuffer hexString = new StringBuffer();
25 // 字节数组转换为 十六进制 数
26 for (int i = 0; i < messageDigest.length; i++) {
27 String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
28 if (shaHex.length() < 2) {
29 hexString.append(0);
30 }
31 hexString.append(shaHex);
32 }
33 return hexString.toString();
34
35 } catch (NoSuchAlgorithmException e) {
36 e.printStackTrace();
37 }
38 return "";
39 }
40
41 public static String SHA(String decript) {
42 try {
43 MessageDigest digest = java.security.MessageDigest
44 .getInstance("SHA");
45 digest.update(decript.getBytes());
46 byte messageDigest[] = digest.digest();
47 // Create Hex String
48 StringBuffer hexString = new StringBuffer();
49 // 字节数组转换为 十六进制 数
50 for (int i = 0; i < messageDigest.length; i++) {
51 String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
52 if (shaHex.length() < 2) {
53 hexString.append(0);
54 }
55 hexString.append(shaHex);
56 }
57 return hexString.toString();
58
59 } catch (NoSuchAlgorithmException e) {
60 e.printStackTrace();
61 }
62 return "";
63 }
64
65 public static String MD5(String input) {
66 try {
67 // 获得MD5摘要算法的 MessageDigest 对象
68 MessageDigest mdInst = MessageDigest.getInstance("MD5");
69 // 使用指定的字节更新摘要
70 mdInst.update(input.getBytes());
71 // 获得密文
72 byte[] md = mdInst.digest();
73 // 把密文转换成十六进制的字符串形式
74 StringBuffer hexString = new StringBuffer();
75 // 字节数组转换为 十六进制 数
76 for (int i = 0; i < md.length; i++) {
77 String shaHex = Integer.toHexString(md[i] & 0xFF);
78 if (shaHex.length() < 2) {
79 hexString.append(0);
80 }
81 hexString.append(shaHex);
82 }
83 return hexString.toString();
84 } catch (NoSuchAlgorithmException e) {
85 e.printStackTrace();
86 }
87 return "";
88 }
89
90 /**
91 * 加密
92 *
93 * @param content
94 * 需要加密的内容
95 * @param password
96 * 加密密码
97 * @return
98 */
99 public static byte[] encryptAES(String content, String password) {
100 try {
101 KeyGenerator kgen = KeyGenerator.getInstance("AES");
102 kgen.init(128, new SecureRandom(password.getBytes()));
103 SecretKey secretKey = kgen.generateKey();
104 byte[] enCodeFormat = secretKey.getEncoded();
105 SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
106 Cipher cipher = Cipher.getInstance("AES");// 创建密码器
107 byte[] byteContent = content.getBytes("utf-8");
108 cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
109 byte[] result = cipher.doFinal(byteContent);
110 return result; // 加密
111 } catch (NoSuchAlgorithmException e) {
112 e.printStackTrace();
113 } catch (NoSuchPaddingException e) {
114 e.printStackTrace();
115 } catch (InvalidKeyException e) {
116 e.printStackTrace();
117 } catch (UnsupportedEncodingException e) {
118 e.printStackTrace();
119 } catch (IllegalBlockSizeException e) {
120 e.printStackTrace();
121 } catch (BadPaddingException e) {
122 e.printStackTrace();
123 }
124 return null;
125 }
126
127 /**
128 * 解密
129 *
130 * @param content
131 * 待解密内容
132 * @param password
133 * 解密密钥
134 * @return
135 */
136 public static byte[] decryptAES(byte[] content, String password) {
137 try {
138 KeyGenerator kgen = KeyGenerator.getInstance("AES");
139 kgen.init(128, new SecureRandom(password.getBytes()));
140 SecretKey secretKey = kgen.generateKey();
141 byte[] enCodeFormat = secretKey.getEncoded();
142 SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
143 Cipher cipher = Cipher.getInstance("AES");// 创建密码器
144 cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
145 byte[] result = cipher.doFinal(content);
146 return result; // 加密
147 } catch (NoSuchAlgorithmException e) {
148 e.printStackTrace();
149 } catch (NoSuchPaddingException e) {
150 e.printStackTrace();
151 } catch (InvalidKeyException e) {
152 e.printStackTrace();
153 } catch (IllegalBlockSizeException e) {
154 e.printStackTrace();
155 } catch (BadPaddingException e) {
156 e.printStackTrace();
157 }
158 return null;
159 }
160
161 public static void main(String[] args) {
162 String str = MD5("siyanlvQ");
163 System.out.println(str);
164 }
165 }
1 /* strType SHA-256 SHA-512 */
2 private String SHA(final String strText, final String strType) {
3 // 返回值
4 String strResult = null;
5
6 // 是否是有效字符串
7 if (strText != null && strText.length() > 0) {
8 try {
9 // SHA 加密开始
10 // 创建加密对象 并傳入加密類型
11 MessageDigest messageDigest = MessageDigest
12 .getInstance(strType);
13 // 传入要加密的字符串
14 messageDigest.update(strText.getBytes());
15 // 得到 byte 類型结果
16 byte byteBuffer[] = messageDigest.digest();
17
18 // 將 byte 转换为 string
19 StringBuffer strHexString = new StringBuffer();
20 // 遍歷 byte buffer
21 for (int i = 0; i < byteBuffer.length; i++) {
22 String hex = Integer.toHexString(0xff & byteBuffer[i]);
23 if (hex.length() == 1) {
24 strHexString.append('0');
25 }
26 strHexString.append(hex);
27 }
28 // 得到返回結果
29 strResult = strHexString.toString();
30 } catch (NoSuchAlgorithmException e) {
31 System.out.println(e.getMessage());
32 }
33 }
34 return strResult;
35 }
