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@@ -44,6 +44,12 @@ Exceptions
Module: rsa.bigfile
--------------------------------------------------
+.. warning::
+
+ The :py:mod:`rsa.bigfile` module is NOT recommended for general use, has been
+ deprecated since Python-RSA 3.4, and will be removed in a future release. It's
+ vulnerable to a number of attacks. See :ref:`bigfiles` for more information.
+
The :py:mod:`rsa.bigfile` module contains functions for encrypting and
decrypting files that are larger than the RSA key. See
:ref:`bigfiles` for more information.
@@ -57,6 +63,12 @@ decrypting files that are larger than the RSA key. See
The VARBLOCK file format
++++++++++++++++++++++++++++++++++++++++++++++++++
+.. warning::
+
+ The VARBLOCK format is NOT recommended for general use, has been deprecated since
+ Python-RSA 3.4, and will be removed in a future release. It's vulnerable to a
+ number of attacks. See :ref:`bigfiles` for more information.
+
The VARBLOCK file format allows us to encrypt files that are larger
than the RSA key. The format is as follows; || denotes byte string
concatenation::