package util; import org.apache.commons.codec.binary.Hex; import javax.crypto.Mac; import javax.crypto.spec.SecretKeySpec; import java.security.InvalidKeyException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class CipherUtil { // 十六进制下数字到字符的映射数组 private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" }; /** * 把inputString加密 */ public static String generatePassword(String inputString) { return encodeByMD5(inputString); } /** * 验证输入的密码是否正确 * * @param password * 加密后的密码 * @param inputString * 输入的字符串 * @return 验证结果,TRUE:正确 FALSE:错误 */ public static boolean validatePassword(String password, String inputString) { if (password.equals(encodeByMD5(inputString))) { return true; } else { return false; } } /** 对字符串进行MD5加密 */ private static String encodeByMD5(String originString) { if (originString != null) { try { // 创建具有指定算法名称的信息摘要 MessageDigest md = MessageDigest.getInstance("MD5"); // 使用指定的字节数组对摘要进行最后更新,然后完成摘要计算 byte[] results = md.digest(originString.getBytes()); // 将得到的字节数组变成字符串返回 String resultString = byteArrayToHexString(results); return resultString.toUpperCase(); } catch (Exception ex) { ex.printStackTrace(); } } return null; } /** * 转换字节数组为十六进制字符串 * * @param b 字节数组 * @return 十六进制字符串 */ private static String byteArrayToHexString(byte[] b) { StringBuffer resultSb = new StringBuffer(); for (int i = 0; i < b.length; i++) { resultSb.append(byteToHexString(b[i])); } return resultSb.toString(); } /** 将一个字节转化成十六进制形式的字符串 */ private static String byteToHexString(byte b) { int n = b; if (n < 0) n = 256 + n; int d1 = n / 16; int d2 = n % 16; return hexDigits[d1] + hexDigits[d2]; } /** * 生成签名数据 * * @param message * 待加密的数据 * @param key * 加密使用的key * @throws InvalidKeyException * @throws NoSuchAlgorithmException */ public static String hmacMd5Encode(String key, String message) throws Exception { SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "HmacMD5"); Mac mac = Mac.getInstance("HmacMD5"); mac.init(keySpec); byte[] rawHmac = mac.doFinal(message.getBytes()); return Hex.encodeHexString(rawHmac); } public static void main(String[] args) { // String str = generatePassword("123"); //account.getEmail() // + resource.getName() + resource.getPlatform() + dateStr /* System.out.println(generatePassword("demo@reyun.com金融产品iOS"+DateUtil .getCurrentDateStr(DateUtil.C_TIME_PATTON_DEFAULT)).toLowerCase());*/ } }