init

src/main/java/com/flagnote/note/utils/BizKeyUtils.java

@@ -0,0 +1,95 @@
+package com.flagnote.note.utils;
+
+import java.io.UnsupportedEncodingException;
+import java.util.Date;
+
+import org.springframework.util.DigestUtils;
+
+public class BizKeyUtils {
+
+	public static final String MIX_STRING = "6v8muhqp8ta45ncsyi8y";
+
+	public static final String RANGE_STRING = "abcdefhikmnopqstuvwxyz23456789";
+
+	public static String getKey() {
+
+		StringBuffer sb = new StringBuffer();
+
+		for (int i = 0; i < 13; i++) {
+			sb.append(RANGE_STRING.charAt(RandomUtils.nextInt(30)));
+		}
+
+		sb.append(getFilteredKey(md5(sb.toString() + MIX_STRING + getPrefixTime())));
+
+		return sb.toString();
+	}
+
+	public static String getFilteredKey(String key) {
+		String result = "";
+		for (int i = 0; i < key.length(); i++) {
+			String ts = String.valueOf(key.charAt(i));
+			if (RANGE_STRING.indexOf(ts) >= 0) {
+				result += ts;
+			}
+
+			if (result.length() == 3) {
+				return result;
+			}
+		}
+
+		for (int i = 1; i < 3; i++) {
+			result += "x";
+		}
+
+		return result;
+	}
+
+	public static Boolean validateKey(String key) {
+		String oKey = key.substring(0, 13);
+
+		String cKey = oKey + getFilteredKey(md5(oKey + MIX_STRING + getPrefixTime()));
+
+		if (cKey.equals(key)) {
+			return true;
+		}
+
+		cKey = oKey + getFilteredKey(md5(oKey + MIX_STRING + (getPrefixTime() - 1)));
+
+		if (cKey.equals(key)) {
+			return true;
+		}
+
+		cKey = oKey + getFilteredKey(md5(oKey + MIX_STRING + (getPrefixTime() + 1)));
+
+		if (cKey.equals(key)) {
+			return true;
+		}
+
+		return false;
+	}
+
+	public static String mixKey(String key) {
+		return md5(key + md5(MIX_STRING + key));
+	}
+
+	public static String md5(String text) {
+		try {
+			return DigestUtils.md5DigestAsHex(text.getBytes("UTF-8"));
+		} catch (UnsupportedEncodingException e) {
+			throw new RuntimeException("无法生成MD5");
+		}
+	}
+
+	public static Integer getPrefixTime() {
+		return Integer.parseInt(String.valueOf(new Date().getTime()).substring(0, 4));
+	}
+
+	public static String getCipher(String key) {
+		return md5(key + MIX_STRING + key);
+	}
+
+	public static String getSecretKey(String key, String password) {
+		return md5(key + md5(MIX_STRING + password));
+	}
+
+}