Rishabh developed a tricyclic batch matrix multiplication kernel for ciphertext-ciphertext operations in the google/heir repository, extending secure computation capabilities. He approached the problem by designing and implementing the kernel in C++, focusing on efficient tensor operations and cryptographic correctness. To ensure reliability, he refactored and expanded unit tests, improving the maintainability and clarity of the secure computation test suite. Rishabh also enhanced the tensor layout evaluation function, which contributed to greater build stability and restored CI reliability. His work demonstrated depth in C++ development, algorithm design, and cryptography, resulting in a robust foundation for future secure matrix operations.