System and method for facilitating stateful processing of a middlebox module implemented in a trusted execution environment

A system for facilitating stateful processing of a middlebox module implemented in a trusted execution environment, the system comprise:

• one or more processors arranged to
• (a) determine, based on an identifier, from a lookup module in the trusted execution environment, whether a lookup entry of a flow and corresponding to the identifier exists;
• (b) if it is determined that the lookup entry corresponding to the identifier exists, determine, based on the lookup entry, whether an entry associated with the flow is arranged inside the trusted execution environment or outside the trusted execution environment;
• and
• (c) if it is determined that the entry associated with the flow is outside the trusted execution environment, cache, in a cache in the trusted execution environment, the entry associated with the flow and corresponding to the identifier to facilitate provision of a flow state associated with the flow to the middlebox module.

A non-transistory computer readable medium storing computer instructions that, when executed by one or more processors, are arranged to cause the one or more processors to perform a computer-implemented method for facilitating stateful processing of a middlebox module implemented in a trusted execution environment, the computer-implemented method comprising:

• (a) determining, based on an identifier, from a lookup module in the trusted execution environment, whether a lookup entry of a flow and corresponding to the identifier exists;
• (b) if it is determined that the lookup entry corresponding to the identifier exists, determining, based on the lookup entry, whether an entry associated with the flow is arranged inside the trusted execution environment or outside the trusted execution environment;
• and
• (c) if it is determined that the entry associated with the flow is outside the trusted execution environment, caching, in a cache in the trusted execution environment, the entry associated with the flow and corresponding to the identifier to facilitate provision of a flow state associated with the flow to the middlebox module.