def powMod( x, y, mod ):

    x = mpz(x)
    y = mpz(y)
    mod = mpz(mod)
    return pow(x, y, mod)
(Efficiently) Calculate and return `x' to the power of `y' mod `mod'.
dataset/ETHPy150Open isislovecruft/obfsproxy/obfsproxy/common/modexp.py/powMod