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It is well-studied that quantum computing breaks the security of the current worldwide implemented public key cryptosystems. This forces us toward post quantum cryptography (PQC) whose security remains solid even against adversaries having access to quantum computers. For this matter, national institute of standards and technology (NIST) announced four winners in 2022. Among them, CRYSTALS-Kyber which is the only key encapsulation mechanism (KEM)/PKE algorithm, is the aim of this article. In this article, through using physical unclonable functions (PUFs) and true random number generators (TRNGs), we improve the overall security of Kyber and provide physical security to it. Our implementation results on ARMv7 and ARMv8 architectures, indicate significant speedup, compared to the reference work. For example, for the CCA.KEM-KeyGen() algorithm, we achieved roughly 26%, 13%, and 10% speedup at security levels of 512, 768, and 1024 on ARMv7 implementation, and 25%, 12%, and 10% for ARMv8 implementation. Comparing the implementation results of our design with the reference work indicates that both the security and the system performance are improved. 

An estimated 14.7 billion Internet of Things (IoT) devices will be connected to the Internet by 2023. The ubiquity of these devices creates exciting new opportunities, while at the same time introducing new concerns about privacy and security. To address these concerns, efficient cryptographic algorithms are needed to secure communication between IoT devices. In this work, we present an optimized implementation of one such algorithm, the Edwards Curve Digital Signature Algorithm (EdDSA) with operations Keygen, Sign, and Verify using the Ed25519 parameter on the ARM Cortex-M4 implemented in assembly code. The ARM Cortex-M4 is used in millions of devices world-wide, and is a popular choice for a wide range of IoT applications. We discuss the optimization of field and group arithmetic on this platform to produce high-throughput cryptographic primitives. Then, we present the first SCA-resistant implementation of the Signed Comb method, and Test Vector Leakage Assessment (TVLA) measurements. Our fastest implementation performs Ed25519 Keygen in 200,000 cycles, Sign in 240,000 cycles, and Verify in 720,000 cycles on the ARM Cortex-M4.