Showing papers by "Hyoung Joong Kim published in 2022"

Fully Homomorphic Encryption Scheme and Fermat's Little Theorem

Abstract: In this paper, we take an algebraic approach to the generalized DGHV scheme without using bootstrapping technique. We investigate the homomorphic evaluation algorithm in detail and provide several sufficient conditions for correct homomorphic evaluation of arbitrary polynomial circuits. Compared with the bootstrapping procedure, we show that our approach is much simpler and more efficient. Moreover, we prove that both of the key sizes are actually bounded above and that these upper-bounds depend only on the plaintext space and the security parameter. Hence we need only one pair of secret key and public key for correct homomorphic evaluation of all polynomial circuits, which implies the generalized DGHV scheme is a fully homomorphic encryption in itself. Thus our approach shows that the generalized DGHV scheme provides extremely simple and efficient algorithms.

A 64Gb/s Downlink and 32Gb/s Uplink NRZ Wireline Transceiver with Supply Regulation, Background Clock Correction and EOM-based Channel Adaptation for Mid-Reach Cellular Mobile Interface in 8nm FinFET

Abstract: A 32Gb/s/lane NRZ wireline transceiver for the cellular mobile interface has been implemented. The maximum data bandwidth is 64Gb/s downlink and 32Gb/s uplink which meets the bandwidth requirement of the next FR2 standard. The master-slave LDO regulation is used to supply the stable power at each transmitter and receiver that operates independently. The dedicated clock correction and the channel adaptation have been performed to satisfy the time margin of 0.28UI at bit error rate (BER) of 10−12.