Introduce sha256 security review fixes
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
diff --git a/include/mbedtls/sha256.h b/include/mbedtls/sha256.h
index 6ef2245..42aa988 100644
--- a/include/mbedtls/sha256.h
+++ b/include/mbedtls/sha256.h
@@ -118,7 +118,7 @@
* and have a hash operation started.
* \param input The buffer holding the data. This must be a readable
* buffer of length \p ilen Bytes.
- * \param ilen The length of the input data in Bytes.
+ * \param ilen The length of the input data in Bytes. At most UINT32_MAX.
*
* \return \c 0 on success.
* \return A negative error code on failure.