Methods, apparatus, and systems for secure demand paging and other paging operations for processor devices

A method comprising:

• wiping, by a processor, a first page from a page slot of an internal memory;
• reading, by the processor, a second page from an external memory;
• decrypting, by the processor, the second page, to produce a decrypted page;
• overwriting, by the processor, the page slot with the decrypted page;
• performing, by the processor, a hash on the decrypted page;
• and
• in response to determining that the decrypted page fails the hash, wiping the decrypted page from the page slot of the internal memory.

A non-transitory computer readable storage medium storing a program for execution by a processor, the program configured to, when executed by the processor, cause the processor to:

• wipe a first page from a page slot of an internal memory;
• read a second page from an external memory;
• decrypt the second page, to produce a decrypted page;
• overwrite the page slot with the decrypted page;
• perform a hash on the decrypted page;
• and
• in response to determining that the decrypted page fails the hash, wipe the decrypted page from the page slot of the internal memory.