Various embodiments are generally directed to techniques for enclave confidentiality management, such as for protecting cross enclave confidentiality on servers, for instance. Some embodiments are particularly directed to a computing platform including hardware and/or instruction set architecture (ISA) extensions that ensure enclaves cannot access confidential data of other enclaves. For example, key programming ISA extensions and/or hardware changes to the page miss handler (PMH) may ensure that the key uniquely associated with an enclave is used for its memory accesses.