Policy based cryptographic application programming interface in secure memory

Systems, methods, and apparatus are provided for policy protected cryptographic Application Programming Interfaces (APIs) that are deployed in secure memory. One embodiment is a method of software execution. The method includes executing an application in a first secure memory partition; formatting a request to comply with a pre-defined secure communication protocol; transmitting the request from the application to a cryptographic application programming interface (API) of the application, the API being in a second secure memory partition that is separate and secure from the first secure memory partition; and verifying, in the second secure memory partition, that the request complies with a security policy before executing the request.