diff --git a/src/main/scala/app/AccountController.scala b/src/main/scala/app/AccountController.scala
index 0b21de4..d8e6362 100644
--- a/src/main/scala/app/AccountController.scala
+++ b/src/main/scala/app/AccountController.scala
@@ -70,7 +70,7 @@
     val userName = params("userName")
     getAccountByUserName(userName).map { account =>
       updateAccount(account.copy(
-        password    = form.password.map(encrypt).getOrElse(account.password),
+        password    = form.password.map(sha1).getOrElse(account.password),
         mailAddress = form.mailAddress,
         url         = form.url))
 
@@ -93,7 +93,7 @@
 
   post("/register", newForm){ form =>
     if(loadSystemSettings().allowAccountRegistration){
-      createAccount(form.userName, encrypt(form.password), form.mailAddress, false, form.url)
+      createAccount(form.userName, sha1(form.password), form.mailAddress, false, form.url)
       updateImage(form.userName, form.fileId, false)
       redirect("/signin")
     } else NotFound
diff --git a/src/main/scala/app/SignInController.scala b/src/main/scala/app/SignInController.scala
index 3e00963..becc3b2 100644
--- a/src/main/scala/app/SignInController.scala
+++ b/src/main/scala/app/SignInController.scala
@@ -25,7 +25,7 @@
 
   post("/signin", form){ form =>
     val account = getAccountByUserName(form.userName)
-    if(account.isEmpty || account.get.password != encrypt(form.password)){
+    if(account.isEmpty || account.get.password != sha1(form.password)){
       redirect("/signin")
     } else {
       session.setAttribute("LOGIN_ACCOUNT", account.get)
diff --git a/src/main/scala/app/UserManagementController.scala b/src/main/scala/app/UserManagementController.scala
index d21308a..e5673d4 100644
--- a/src/main/scala/app/UserManagementController.scala
+++ b/src/main/scala/app/UserManagementController.scala
@@ -47,7 +47,7 @@
   })
   
   post("/admin/users/_new", newForm)(adminOnly { form =>
-    createAccount(form.userName, encrypt(form.password), form.mailAddress, form.isAdmin, form.url)
+    createAccount(form.userName, sha1(form.password), form.mailAddress, form.isAdmin, form.url)
     updateImage(form.userName, form.fileId, false)
     redirect("/admin/users")
   })
@@ -61,7 +61,7 @@
     val userName = params("userName")
     getAccountByUserName(userName).map { account =>
       updateAccount(getAccountByUserName(userName).get.copy(
-        password     = form.password.map(encrypt).getOrElse(account.password),
+        password     = form.password.map(sha1).getOrElse(account.password),
         mailAddress  = form.mailAddress,
         isAdmin      = form.isAdmin,
         url          = form.url))
diff --git a/src/main/scala/servlet/BasicAuthenticationFilter.scala b/src/main/scala/servlet/BasicAuthenticationFilter.scala
index 1f6e8f7..a69c237 100644
--- a/src/main/scala/servlet/BasicAuthenticationFilter.scala
+++ b/src/main/scala/servlet/BasicAuthenticationFilter.scala
@@ -59,7 +59,7 @@
 
   private def isWritableUser(username: String, password: String, repository: RepositoryService.RepositoryInfo): Boolean = {
     getAccountByUserName(username).map { account =>
-      account.password == encrypt(password) && hasWritePermission(repository.owner, repository.name, Some(account))
+      account.password == sha1(password) && hasWritePermission(repository.owner, repository.name, Some(account))
     } getOrElse false
   }
   
diff --git a/src/main/scala/util/StringUtil.scala b/src/main/scala/util/StringUtil.scala
index bc478c7..9cce293 100644
--- a/src/main/scala/util/StringUtil.scala
+++ b/src/main/scala/util/StringUtil.scala
@@ -2,7 +2,7 @@
 
 object StringUtil {
 
-  def encrypt(value: String): String = {
+  def sha1(value: String): String = {
     val md = java.security.MessageDigest.getInstance("SHA-1")
     md.update(value.getBytes)
     md.digest.map(b => "%02x".format(b)).mkString