Thomas Luther Email & Phone Number

Seoul, Kr

Development for LG’s Enhanced Lightweight Cryptography (ELWC) library for embedded applications. Developed low-level Curve 25519 field operations in assembly for the Synopsys ARC processor as well as a generic C implementation for low-end 32-bit processors (including RISC V). Implemented various improvements in the higher level Ed25519 code that significantly improved the performance on all supported platforms.Implemented a post quantum version of LG’s eSCMS (Universal Butterfly Key Expansion) scheme on the Utimaco Security Server CSe HSM. This was presented at the Utimaco Applied Crypto Symposium in the US 2018.Implemented LG’s eSCMS on the Infineon SLI37 HSM. Additional proof of concept of running LG’s ELWC on the SLI37’s ARM processor to implement ED25519 support.Extended the SPOG/cuPoly GPU homomorphic encryption library to implement a practical proof of concept use case of fingerprint identification using convolutional neural network inference. Additional research of using homomorphic encryption to perform machine learning training.Wrote simulations to study the characteristics of the binary hash tree used in the Activation Codes for Pseudonym Certificates (ACPC) scheme. Namely the loss of anonymity when clients download activation codes and the size of the hash tree when vehicles are revoked. The results of this research and proposed solutions are part of the uACPC paper.Research and development of LG’s AaaS (Authentication as a Service) technology based on authentication using blind signatures. This includes not only the generation of anonymous X.509 certificates, but the back end software to manage certificate expiration and prevent certificate reuse if necessary.Research and development of LG’s AaaS CV2X solution which utilizes LG’s uACPC and Anonymous Authentication as a Service technology. Solution includes both in vehicle and backend software.

San Jose, California, Us

Worked on the following Electra broadcast video encoders: 5400, 7000, 8000, and 9000 (Ambarella A1 and A6 based). Everything from board being up, manufacturing diagnostics, integration. and feature development throughout the product's life cycle.Worked on the Spider video processing and encoding library used by the current generation of Harmonic broadcast video encoders. Most of my notable contributions were related to GPU acceleration using Intel Media SDK and Open CL and were targeted to run on the Intel Monte Vista board.Worked on the second generation Prostream high density transcoder card based on the Ambarella A8. Developed board bring up and manufacturing diagnostics as well as ancillary data insertion features.Worked on the Harmonic MV-150 and Sierra first generation SD and HD AVC video encoders (essentially MPEG2 encoding with AVC syntax). My main contributions were refining the motion vectors to quarter-pixel and choosing the best AVC intra prediction mode.

Developed low cost, low latency lossless video compression algorithm for high definition video encoder chip based on adaptive Golomb coding. Wrote simulation software to validate performance and tune parameters. Worked with hardware engineers to reduce the cost of the codec.Worked on the Network Recorder project which was a high performance, hard disk based audio and video storage platform. The platform provided high-level API’s for storing, retrieving, and editing audio/video data. It was designed to be flexible and used in a wide variety of A/V applications including Sony's video cameras.

Involved in most areas of the design and implementation of ESS’s H.324 compliant videophone. Technology was used in the Vialta Beamer videophone as well as several OEM products using the ESS videophone chipset.