--- a/bitten/build/svntools.py
+++ b/bitten/build/svntools.py
@@ -67,7 +67,8 @@
     if errors:
         raise Error, errors
 
-def checkout(ctxt, url, path=None, revision=None, dir_='.', verbose=False, shared_path=None):
+def checkout(ctxt, url, path=None, revision=None, dir_='.', verbose=False, shared_path=None,
+        username=None, password=None):
     """Perform a checkout from a Subversion repository.
     
     :param ctxt: the build context
@@ -78,6 +79,8 @@
     :param dir_: the name of a local subdirectory to check out into
     :param verbose: whether to log the list of checked out files
     :param shared_path: a shared directory to do the checkout in, before copying to dir_
+    :param username: a username of the repository
+    :param password: a password of the repository
     """
     args = ['checkout']
     if revision:
@@ -86,6 +89,10 @@
         final_url = posixpath.join(url, path.lstrip('/'))
     else:
         final_url = url
+    if username:
+        args += ['--username', username]
+    if password:
+        args += ['--password', password]
     args += [final_url, dir_]
 
     cofilter = None
@@ -106,7 +113,7 @@
     if returncode != 0:
         ctxt.error('svn checkout failed (%s)' % returncode)
 
-def export(ctxt, url, path=None, revision=None, dir_='.'):
+def export(ctxt, url, path=None, revision=None, dir_='.', username=None, password=None):
     """Perform an export from a Subversion repository.
     
     :param ctxt: the build context
@@ -115,12 +122,18 @@
     :param path: the path inside the repository
     :param revision: the revision to check out
     :param dir_: the name of a local subdirectory to export out into
+    :param username: a username of the repository
+    :param password: a password of the repository
     """
     args = ['export', '--force']
     if revision:
         args += ['-r', revision]
     if path:
         url = posixpath.join(url, path)
+    if username:
+        args += ['--username', username]
+    if password:
+        args += ['--password', password]
     args += [url, dir_]
 
     from bitten.build import shtools

--- a/doc/commands.txt
+++ b/doc/commands.txt
@@ -795,6 +795,10 @@
 |                 | relative to the project directory, so for standard usage    |
 |                 | set it to something like ``../trunk``                       |
 +-----------------+-------------------------------------------------------------+
+| ``username``    | Username to pass for authentication (optional)              |
++-----------------+-------------------------------------------------------------+
+| ``password``    | Password to pass for authentication (optional)              |
++-----------------+-------------------------------------------------------------+
 
 
 Examples
@@ -836,6 +840,10 @@
 | ``dir``      | Path specifying which directory the sources should be       |
 |              | exported to (defaults to '.')                               |
 +--------------+-------------------------------------------------------------+
+| ``username`` | Username to pass for authentication (optional)              |
++--------------+-------------------------------------------------------------+
+| ``password`` | Password to pass for authentication (optional)              |
++--------------+-------------------------------------------------------------+
 
 Examples
 --------