Efficient hardware for modular exponentiation using the sliding-window method

Modular exponentiation is an essential operations for various applications, such as cryptography. The performance of this operations has a tremendous impact on the efficiency of the whole application. Therefore, many researchers devoted special interest to providing smart methods and efficient implementation for modular exponentaition. One these methods is the sliding-window method, which pre-processes the exponent into zero and non-zero partitions so that the number of modular multiplications required to compute the modular power is reduced. In this paper, we devise a novel harwdare for computing modular exponentiation using the sliding-window method. The implementation is efficient when compared against existing hardware implementations of the modular exponentiation.