diff --git a/src/main/java/com/rekoe/utils/EncryptUtil.java b/src/main/java/com/rekoe/utils/EncryptUtil.java
new file mode 100644
index 0000000..a9b0a8e
--- /dev/null
+++ b/src/main/java/com/rekoe/utils/EncryptUtil.java
@@ -0,0 +1,118 @@
+package com.rekoe.utils;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * 加密工具
+ * 
+ * @author <a href="mailto:yuanhuiwu@gmail.com">Huiwu Yuan</a>
+ * @since 1.0
+ */
+public class EncryptUtil {
+	/**
+	 * 
+	 */
+	private static final String cvt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz0123456789#@$";
+
+	/**
+	 * 
+	 */
+	private static final int fillchar = '*';
+
+	/**
+	 * 加密
+	 * 
+	 * @param str
+	 *            明文
+	 * @return 密文
+	 */
+	public static String encrypt(String str) {
+		byte[] data = str.getBytes();
+		int c;
+		int len = data.length;
+		StringBuffer ret = new StringBuffer(((len / 3) + 1) * 4);
+		for (int i = 0; i < len; ++i) {
+			c = (data[i] >> 2) & 0x3f;
+			ret.append(cvt.charAt(c));
+			c = (data[i] << 4) & 0x3f;
+			if (++i < len) {
+				c |= (data[i] >> 4) & 0x0f;
+			}
+			ret.append(cvt.charAt(c));
+			if (i < len) {
+				c = (data[i] << 2) & 0x3f;
+				if (++i < len) {
+					c |= (data[i] >> 6) & 0x03;
+				}
+				ret.append(cvt.charAt(c));
+			} else {
+				++i;
+				ret.append((char) fillchar);
+			}
+			if (i < len) {
+				c = data[i] & 0x3f;
+				ret.append(cvt.charAt(c));
+			} else {
+				ret.append((char) fillchar);
+			}
+		}
+		return ret.toString();
+	}
+
+	/**
+	 * 解密
+	 * 
+	 * @param str
+	 *            密文
+	 * @return 明文
+	 */
+	public static String decrypt(String str) {
+		byte[] data = str.getBytes();
+		int c, c1;
+		int len = data.length;
+		StringBuffer ret = new StringBuffer((len * 3) / 4);
+		for (int i = 0; i < len; ++i) {
+			c = cvt.indexOf(data[i]);
+			++i;
+			c1 = cvt.indexOf(data[i]);
+			c = ((c << 2) | ((c1 >> 4) & 0x3));
+			ret.append((char) c);
+			if (++i < len) {
+				c = data[i];
+				if (fillchar == c) {
+					break;
+				}
+				c = cvt.indexOf((char) c);
+				c1 = ((c1 << 4) & 0xf0) | ((c >> 2) & 0xf);
+				ret.append((char) c1);
+			}
+			if (++i < len) {
+				c1 = data[i];
+				if (fillchar == c1) {
+					break;
+				}
+				c1 = cvt.indexOf((char) c1);
+				c = ((c << 6) & 0xc0) | c1;
+				ret.append((char) c);
+			}
+		}
+		return ret.toString();
+	}
+
+	/**
+	 * apache SHA1 加密
+	 * 
+	 * @param str
+	 *            明文
+	 * @return 密文
+	 */
+	public static String encriptSHA1(String str) {
+		try {
+			return new sun.misc.BASE64Encoder().encode(MessageDigest.getInstance("SHA1").digest(str.getBytes()));
+		} catch (NoSuchAlgorithmException e) {
+			e.printStackTrace();
+			throw new RuntimeException(e);
+		}
+	}
+}
diff --git a/src/main/java/com/rekoe/utils/UsrProvider.java b/src/main/java/com/rekoe/utils/UsrProvider.java
new file mode 100644
index 0000000..ef7a0f4
--- /dev/null
+++ b/src/main/java/com/rekoe/utils/UsrProvider.java
@@ -0,0 +1,43 @@
+/**
+ * 
+ */
+package com.rekoe.utils;
+
+import com.rekoe.domain.Usr;
+
+/**
+ * 为当前的线程提供登录的用户
+ * 
+ */
+public class UsrProvider {
+
+	private static final ThreadLocal<Usr> USR_THREAD_LOCAL = new ThreadLocal<Usr>();
+
+	/**
+	 * @return 当前的用户
+	 */
+	public static Usr getCurrentUsr() {
+		Usr usr = USR_THREAD_LOCAL.get();
+		if (usr == null) {
+			throw new RuntimeException("当前线程没有设置用户!");
+		}
+		return usr;
+	}
+
+	/**
+	 * 设置当前的用户到当前线程中
+	 * 
+	 * @param usr
+	 *            用户
+	 */
+	public static void setUsr(Usr usr) {
+		USR_THREAD_LOCAL.set(usr);
+	}
+
+	/**
+	 * 清空线程的用户
+	 */
+	public static void removeUsr() {
+		USR_THREAD_LOCAL.remove();
+	}
+}