Data integrity and fault tolerance are prerequisites for RISC-V adoption in enterprise server environments, relying heavily on Cyclic Redundancy Check (CRC) and Erasure Coding (EC) for storage reliability and network transmission. Currently, the RISC-V ISA lacks the dedicated hardware acceleration found in mature architectures such as x86, leading to significant overhead in implementations. We propose novel ISA extensions to bridge this gap: a fused carry-less multiply-add instruction for CRC folding achieving up to 4x speedup, and a specialized GF(2^8) multiply-accumulate instruction for EC delivering 4x throughput gains over vectorized baselines. Evaluation confirms that these extensions significantly enhance data path efficiency, positioning RISC-V as a competitive architecture for reliable, high-performance storage and networking systems.