Non-pageable memory
Normal allocated memory can be paged to disk at the whim of the operating system. This can be a problem for sensitive information like passwords, keys and secrets.
The Gcr library holds passwords and keys in non-pageable, or locked memory. This is only possible if the OS contains support for it.
The set of gcr_secure_memory_*()
functions allow applications to use secure
memory to hold passwords and other sensitive information.