| 提交 | 用户 | age | ||
| 5c5945 | 1 | package com.hx.util; |
| E | 2 | |
| 3 | import org.apache.commons.codec.binary.Base64; | |
| 4 | ||
| 5 | import javax.crypto.Cipher; | |
| 6 | import javax.crypto.SecretKey; | |
| 7 | import javax.crypto.spec.SecretKeySpec; | |
| 8 | import java.io.UnsupportedEncodingException; | |
| 9 | ||
| 10 | /** | |
| 11 | * AES加密工具类 | |
| 12 | */ | |
| 13 | public class Aes { | |
| 14 | ||
| 15 | /** | |
| 16 | * 将二进制转换成16进制 | |
| 17 | * | |
| 18 | * @param buf 字节数组 | |
| 19 | * @return | |
| 20 | */ | |
| 21 | public static String parseByte2HexStr(byte buf[]) { | |
| 22 | StringBuffer sb = new StringBuffer(); | |
| 23 | for (int i = 0; i < buf.length; i++) { | |
| 24 | String hex = Integer.toHexString(buf[i] & 0xFF); | |
| 25 | if (hex.length() == 1) { | |
| 26 | hex = '0' + hex; | |
| 27 | } | |
| 28 | sb.append(hex.toUpperCase()); | |
| 29 | } | |
| 30 | return sb.toString(); | |
| 31 | } | |
| 32 | ||
| 33 | /** | |
| 34 | * 将16进制转换为二进制 | |
| 35 | * | |
| 36 | * @param hexStr 16进制字符 | |
| 37 | * @return | |
| 38 | */ | |
| 39 | public static byte[] parseHexStr2Byte(String hexStr) { | |
| 40 | if (hexStr.length() < 1) | |
| 41 | return null; | |
| 42 | byte[] result = new byte[hexStr.length() / 2]; | |
| 43 | for (int i = 0; i < hexStr.length() / 2; i++) { | |
| 44 | int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16); | |
| 45 | int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16); | |
| 46 | result[i] = (byte) (high * 16 + low); | |
| 47 | } | |
| 48 | return result; | |
| 49 | } | |
| 50 | ||
| 51 | /** | |
| 52 | * 加密 | |
| 53 | * @param str 待加密字符串 | |
| 54 | * @param secret 密钥 | |
| 55 | * @return | |
| 56 | */ | |
| 57 | public static byte[] encrypt(String str, String secret) { | |
| 58 | if (null != str) { | |
| 59 | byte[] bytes = null; | |
| 60 | ||
| 61 | try { | |
| 62 | Base64 base64 = new Base64(); | |
| 63 | String ALGORITHM = "AES"; | |
| 64 | SecretKey desKey = new SecretKeySpec(secret.getBytes("UTF-8"), ALGORITHM);// 生成密钥 | |
| 65 | Cipher c; | |
| 66 | c = Cipher.getInstance(ALGORITHM); | |
| 67 | c.init(Cipher.ENCRYPT_MODE, desKey); | |
| 68 | bytes = c.doFinal(str.getBytes("UTF-8")); | |
| 69 | return bytes; | |
| 70 | } catch (Exception e) { | |
| 71 | e.printStackTrace(); | |
| 72 | } | |
| 73 | ||
| 74 | } | |
| 75 | return null; | |
| 76 | } | |
| 77 | ||
| 78 | /** | |
| 79 | * 解密 | |
| 80 | * @param str 待解密字符串 | |
| 81 | * @param secret 密钥 | |
| 82 | * @return | |
| 83 | */ | |
| 84 | public static byte[] decrypt(byte[] str, String secret) { | |
| 85 | try { | |
| 86 | String ALGORITHM = "AES"; | |
| 87 | SecretKey desKey = new SecretKeySpec(secret.getBytes("UTF-8"), ALGORITHM);// 生成密钥 | |
| 88 | Cipher c = Cipher.getInstance(ALGORITHM); | |
| 89 | c.init(Cipher.DECRYPT_MODE, desKey); | |
| 90 | return c.doFinal(str); | |
| 91 | } catch (Exception e) { | |
| 92 | e.printStackTrace(); | |
| 93 | } | |
| 94 | return null; | |
| 95 | } | |
| 96 | ||
| 97 | public static void main(String[] args) throws UnsupportedEncodingException { | |
| 98 | ||
| 99 | String content = "apiKey=phitabfaceapi&userId=o5W1it6Pvqn6vPX6E1BGERH8J1lw"; | |
| 100 | String password = "phitabfacesecret"; | |
| 101 | ||
| 102 | byte[] encode = encrypt(content, password); | |
| 103 | String code = parseByte2HexStr(encode); | |
| 104 | System.out.println("密文字符串：" + code); | |
| 105 | ||
| 106 | //16进制字符串转成字节数组 | |
| 107 | byte[] decode = parseHexStr2Byte(code); | |
| 108 | // 解密 | |
| 109 | byte[] decryptResult = decrypt(decode, password); | |
| 110 | System.out.println("解密后：" + new String(decryptResult, "UTF-8")); //不转码会乱码 | |
| 111 | ||
| 112 | } | |
| 113 | } | |
