tree d497e2f317ea290ed6cea4fd3918a4257650bc80
parent b65c2be5f174468a178b6d9456b20ca969d4a3d6
author Andres AG <andres.amayagarcia@arm.com> 1484825073 +0000
committer Simon Butcher <simon.butcher@arm.com> 1494536117 +0100

Fix data loss in unsigned int cast in PK

This patch introduces some additional checks in the PK module for 64-bit
systems only. The problem is that the API functions in the PK
abstraction accept a size_t value for the hashlen, while the RSA module
accepts an unsigned int for the hashlen. Instead of silently casting
size_t to unsigned int, this change checks whether the hashlen overflows
an unsigned int and returns an error.