Security Challenges Faced by RISC-V open-source Processors and its Security Features: A Survey

RISC-V, an open-source instruction set architecture (ISA), presents unique security dynamics due to its transparent development model. This survey illuminates the principal security challenges inherent to RISC-V and elaborates on the corresponding countermeasures, from hardware security mechanisms to cryptographic interventions. We explore the unique security challenges posed by its open-source nature and detail the innovative security features implemented to counteract them, including hardware security extensions and cryptographic solutions. As RISC-V processors gain traction, this comprehensive overview aids professionals in understanding both its vulnerabilities and strengths, serving as a guide for future research and development in the realm of RISC-V security.