A signal processing device includes: a filter configured to perform an adaptive equalization process of a signal, on a basis of a filter coefficient; an updater configured to update the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and a corrector configured to correct the target value, on a basis of the amplitude of the signal.

A signal processing device includes: a filter configured to perform an adaptive equalization process of a signal, on a basis of a filter coefficient; an updater configured to update the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and a corrector configured to correct the target value, on a basis of the amplitude of the signal.

Techniques for remote SGX enclave authentication are described. An attestation service may be used to attest that an enclave was successfully established on a Software Guard Extensions (SGX) enabled platform. Further, an attestation service may, in embodiments, be used as a notary system to attest that a public-key certificate was generated by a particular SGX enclave and, therefore, may be trusted by other remote enclaves for authentication. In an embodiment, a client-side SGX enclave may generate a public-private key pair (SK, PK), compute a cryptographic hash H of PK, create a report R containing H, obtain a quote Q on the report R from a quoting enclave component, obtain remote attestation response RA from an attestation service, and broadcast RA and PK to one or more server side SGX enclaves. Other embodiments are described and claimed.