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262 lines
7.7 KiB
262 lines
7.7 KiB
package com.fr.plugin.loginAuth.utils; |
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import com.fr.log.FineLoggerFactory; |
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import sun.misc.BASE64Decoder; |
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import sun.misc.BASE64Encoder; |
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import javax.crypto.Cipher; |
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import javax.crypto.SecretKey; |
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import javax.crypto.SecretKeyFactory; |
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import javax.crypto.spec.DESKeySpec; |
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import javax.crypto.spec.SecretKeySpec; |
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import java.io.IOException; |
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import java.security.Key; |
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import java.security.MessageDigest; |
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import java.security.SecureRandom; |
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/** |
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* 加解密工具类 |
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*/ |
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public class CipherUtils { |
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/** |
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* 加密 |
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* |
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* @param datasource |
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* byte[] |
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* @param password |
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* String |
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* @return byte[] |
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*/ |
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public static byte[] desEncrypt(byte[] datasource, String password) { |
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try { |
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SecureRandom random = new SecureRandom(); |
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DESKeySpec desKey = new DESKeySpec(password.getBytes()); |
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// 创建一个密匙工厂,然后用它把DESKeySpec转换成 |
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SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); |
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SecretKey securekey = keyFactory.generateSecret(desKey); |
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// Cipher对象实际完成加密操作 |
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Cipher cipher = Cipher.getInstance("DES"); |
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// 用密匙初始化Cipher对象 |
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cipher.init(Cipher.ENCRYPT_MODE, securekey, random); |
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// 现在,获取数据并加密 |
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// 正式执行加密操作 |
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return cipher.doFinal(datasource); |
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} catch (Throwable e) { |
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e.printStackTrace(); |
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} |
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return null; |
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} |
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/** |
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* 解密 |
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* |
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* @param src |
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* byte[] |
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* @param password |
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* String |
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* @return byte[] |
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* @throws Exception |
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*/ |
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public static byte[] desDecrypt(byte[] src, String password) throws Exception { |
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// DES算法要求有一个可信任的随机数源 |
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SecureRandom random = new SecureRandom(); |
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// 创建一个DESKeySpec对象 |
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DESKeySpec desKey = new DESKeySpec(password.getBytes("UTF-8")); |
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// 创建一个密匙工厂 |
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SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); |
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// 将DESKeySpec对象转换成SecretKey对象 |
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SecretKey securekey = keyFactory.generateSecret(desKey); |
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// Cipher对象实际完成解密操作 |
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Cipher cipher = Cipher.getInstance("DES"); |
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// 用密匙初始化Cipher对象 |
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cipher.init(Cipher.DECRYPT_MODE, securekey, random); |
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// 真正开始解密操作 |
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return cipher.doFinal(src); |
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} |
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/** |
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* 自定义一个key |
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**/ |
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public static byte[] getKey(String keyRule) { |
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Key key = null; |
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byte[] keyByte = keyRule.getBytes(); |
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// 创建一个空的八位数组,默认情况下为0 |
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byte[] byteTemp = new byte[8]; |
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// 将用户指定的规则转换成八位数组 |
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for (int i = 0; i < byteTemp.length && i < keyByte.length; i++) { |
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byteTemp[i] = keyByte[i]; |
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} |
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key = new SecretKeySpec(byteTemp, "DES"); |
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return key.getEncoded(); |
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} |
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/** |
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* 将16进制转换为二进制 |
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* |
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* @param hexStr |
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* @return |
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*/ |
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public static byte[] parseHexStr2Byte(String hexStr) { |
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if (hexStr.length() < 1) return null; |
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byte[] result = new byte[hexStr.length() / 2]; |
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for (int i = 0; i < hexStr.length() / 2; i++) { |
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int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16); |
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int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16); |
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result[i] = (byte) (high * 16 + low); |
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} |
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return result; |
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} |
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/*** |
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* 解密数据 |
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* @param decryptString |
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* @param decryptKey |
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* @return |
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* @throws Exception |
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*/ |
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public static String decryptDES(String decryptString, String decryptKey) throws Exception { |
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SecretKeySpec key = new SecretKeySpec(getKey(decryptKey), "DES"); |
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Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding"); |
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cipher.init(Cipher.DECRYPT_MODE, key); |
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byte decryptedData[] = cipher.doFinal(parseHexStr2Byte(decryptString)); |
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return new String(decryptedData,"utf-8"); |
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} |
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/** |
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* jdksha256加密 |
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* @param str |
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* @return |
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*/ |
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public static String jdksha256(String str) |
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{ |
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String sha256Str = ""; |
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try { |
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MessageDigest sha256Deget = MessageDigest.getInstance("SHA-256"); |
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byte[] sha256Encode = sha256Deget.digest(str.getBytes()); |
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sha256Str = ByteToHexStr(sha256Encode); |
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}catch (Exception e){ |
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FineLoggerFactory.getLogger().info("FRLOG:SHA256加密异常:"+e.getMessage()); |
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} |
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return sha256Str; |
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} |
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/** |
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* byte数组转16进制字符串 |
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* @param bytes |
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* @return |
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*/ |
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private static String ByteToHexStr(byte[] bytes) |
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{ |
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String hexStr = ""; |
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for(int i =0;i<bytes.length;i++) |
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{ |
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int temp = bytes[i] & 0xff; |
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String tempHex = Integer.toHexString(temp); |
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if(tempHex.length() < 2) |
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{ |
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hexStr += "0"+tempHex; |
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} |
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else { |
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hexStr += tempHex; |
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} |
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} |
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return hexStr; |
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} |
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/** |
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* base64加密 |
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* @param key |
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* @return |
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*/ |
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public static String base64Encode(String key){ |
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return (new BASE64Encoder()).encodeBuffer(key.getBytes()); |
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} |
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/** |
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* base64解密 |
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* @param key |
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* @return |
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*/ |
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public static String base64Decode(String key){ |
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String result = ""; |
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try { |
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result = new String((new BASE64Decoder()).decodeBuffer(key)); |
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} catch (IOException e) { |
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FineLoggerFactory.getLogger().info("FRLOG:BASE64解密异常:"+e.getMessage()); |
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} |
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return result; |
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} |
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public static String getBase64DecodeStr(String str){ |
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if(str == null || str.isEmpty()){ |
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return ""; |
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} |
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String result = base64Decode(str); |
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return result.contains("base64")?result:str; |
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} |
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/** |
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* 是否被base64加密过 |
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* @param str |
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* @return |
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*/ |
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public static boolean isBase64(String str) { |
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if (str == null || str.trim().length() == 0) { |
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return false; |
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} |
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else { |
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if (str.length() % 4 != 0) { |
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return false; |
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} |
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char[] strChars = str.toCharArray(); |
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for (char c:strChars) { |
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if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') |
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|| c == '+' || c == '/' || c == '=') { |
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continue; |
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} |
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else { |
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return false; |
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} |
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} |
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return true; |
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} |
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} |
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public static void main(String[] args) throws Exception { |
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// String key = "z2bse2zh"; |
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// String key = "ajshcjzj"; |
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// String str = "男"; |
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//// |
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// byte[] a =desEncrypt(str.getBytes(),key); |
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//// System.out.println(new String(a)); |
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// String a1 = new BASE64Encoder().encodeBuffer(a); |
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//// |
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// System.out.println(a1); |
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//// |
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//// byte[] b = desDecrypt(a,key); |
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//// System.out.println(new String(b)); |
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// |
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// String key2 = "rdTK5iLsDFw="; |
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// byte[] b2 = desDecrypt(new BASE64Decoder().decodeBuffer(key2),"ajshcjzj"); |
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// System.out.println(new String(b2)); |
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// //密钥 |
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// String key = "z2bse2zh"; |
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// //解密数据 |
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// String encryDate = "DF2DF0F837C38A1233A8B1255B0532E36E9D29052873B7F8707936C025E2FE368B0A8919A93C8869"; |
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// String a = "ED33AD65CDBAEF49"; |
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// String result = decryptDES(a, key); |
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// |
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// System.out.println("result:" + result); |
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// System.out.println("result2:"+new String(decrypt(result.getBytes(),key))); |
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} |
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}
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