Function nginx::RSA_meth_get_priv_enc

pub unsafe extern "C" fn RSA_meth_get_priv_enc(
    meth: *const RSA_METHOD
) -> Option<unsafe extern "C" fn(meth: c_int, arg1: *const c_uchar, arg2: *mut c_uchar, arg3: *mut RSA, arg4: c_int) -> c_int>