| 提交 | 用户 | age | ||
| 826b66 | 1 | package com.hx.util.mysql.aes; |
| C | 2 | |
| 3 | import com.hx.util.StringUtils; | |
| 4 | import org.apache.commons.codec.binary.Hex; | |
| 5 | ||
| 6 | import javax.crypto.Cipher; | |
| 7 | import javax.crypto.spec.SecretKeySpec; | |
| 8 | import java.io.UnsupportedEncodingException; | |
| 9 | import java.util.regex.Pattern; | |
| 10 | ||
| 11 | /** | |
| 12 | * mybatis数据库的AES_ENCRYPT（加密）和AES_DECRYPT（解密） | |
| 13 | * mybatis数据库的HEX（加壳）UNHEX（解壳） | |
| 14 | * @author CJH | |
| 15 | * @Date 2021-01-06 | |
| 16 | */ | |
| 17 | public class MysqlHexAesTool { | |
| 18 | ||
| 19 | ||
| 20 | public static SecretKeySpec generateMySQLAESKey(final String key, final String encoding) { | |
| 21 | try { | |
| 22 | final byte[] finalKey = new byte[16]; | |
| 23 | int i = 0; | |
| 24 | for(byte b : key.getBytes(encoding)) { | |
| 25 | finalKey[i++%16] ^= b; | |
| 26 | } | |
| 27 | return new SecretKeySpec(finalKey, "AES"); | |
| 28 | } catch(UnsupportedEncodingException e) { | |
| 29 | throw new RuntimeException(e); | |
| 30 | } | |
| 31 | } | |
| 32 | ||
| 33 | /**AES 解密 | |
| 34 | * @param data 需要解密的数据 | |
| 35 | * @param aesKey 秘钥 | |
| 36 | * @param encoding 编码，不填默认UTF-8 | |
| 37 | * @return 解密数据 | |
| 38 | */ | |
| 39 | public static String decryptData(String data,String aesKey,String encoding) { | |
| 40 | try{ | |
| 41 | if(data == null){ | |
| 42 | return null; | |
| 43 | } | |
| 44 | if(!isHexStrValid(data)){ | |
| 45 | return data; | |
| 46 | } | |
| 47 | if(StringUtils.isEmpty(encoding)){ | |
| 48 | encoding = "UTF-8"; | |
| 49 | } | |
| 50 | // Decrypt | |
| 51 | final Cipher decryptCipher = Cipher.getInstance("AES"); | |
| 52 | decryptCipher.init(Cipher.DECRYPT_MODE, generateMySQLAESKey(aesKey, encoding)); | |
| 53 | data = new String(decryptCipher.doFinal(Hex.decodeHex(data.toCharArray()))); | |
| 54 | }catch (Exception e){ | |
| 55 | throw new RuntimeException(e); | |
| 56 | } | |
| 57 | return data; | |
| 58 | } | |
| 59 | ||
| 60 | /**AES加密 | |
| 61 | * @param data 需要解密的数据 | |
| 62 | * @param aesKey 秘钥 | |
| 63 | * @param encoding 编码，不填默认UTF-8 | |
| 64 | * @return 返回大写加密的数据 | |
| 65 | */ | |
| 66 | public static String encryptData(String data,String aesKey,String encoding) { | |
| 67 | try { | |
| 68 | if(data == null){ | |
| 69 | return null; | |
| 70 | } | |
| 71 | ||
| 72 | if (StringUtils.isEmpty(encoding)) { | |
| 73 | encoding = "UTF-8"; | |
| 74 | } | |
| 75 | // Encrypt | |
| 76 | final Cipher encryptCipher = Cipher.getInstance("AES"); | |
| 77 | encryptCipher.init(Cipher.ENCRYPT_MODE, generateMySQLAESKey(aesKey, encoding)); | |
| 78 | char[] code = Hex.encodeHex(encryptCipher.doFinal(data.getBytes(encoding))); | |
| 79 | StringBuilder builder = new StringBuilder(); | |
| 80 | for (char d : code) { | |
| 81 | builder.append(d); | |
| 82 | } | |
| 83 | data = builder.toString().toUpperCase(); | |
| 84 | } catch (Exception e) { | |
| 85 | throw new RuntimeException(e); | |
| 86 | } | |
| 87 | return data; | |
| 88 | } | |
| 89 | ||
| 90 | /** | |
| 91 | * 判断是不是十六进制的字符串（字母是大写的） | |
| 92 | * @param str 需要判断的字符串 | |
| 93 | * @return true or false | |
| 94 | */ | |
| 95 | public static boolean isHexStrValid(String str) { | |
| 96 | ||
| 97 | if(str == null){ | |
| 98 | return false; | |
| 99 | } | |
| 100 | //是否32位倍数 | |
| 101 | if(str.length()%32 != 0){ | |
| 102 | return false; | |
| 103 | } | |
| 104 | String pattern = "^[0-9A-F]+$"; | |
| 105 | return Pattern.compile(pattern).matcher(str).matches(); | |
| 106 | } | |
| 107 | ||
| 108 | ||
| 109 | ||
| 110 | } | |
