| // Copyright (C) 2017-2018 Baidu, Inc. All Rights Reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in |
| // the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Baidu, Inc., nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #![crate_name = "secretsharingenclave"] |
| #![crate_type = "staticlib"] |
| |
| #![cfg_attr(not(target_env = "sgx"), no_std)] |
| #![cfg_attr(target_env = "sgx", feature(rustc_private))] |
| |
| extern crate sgx_types; |
| #[cfg(not(target_env = "sgx"))] |
| #[macro_use] |
| extern crate sgx_tstd as std; |
| |
| use sgx_types::*; |
| use std::vec::Vec; |
| use std::slice; |
| use std::io::{self, Write}; |
| |
| extern crate threshold_secret_sharing as tss; |
| |
| /// A function simply invokes ocall print to print the incoming string |
| /// |
| /// # Parameters |
| /// |
| /// **some_string** |
| /// |
| /// A pointer to the string to be printed |
| /// |
| /// **len** |
| /// |
| /// An unsigned int indicates the length of str |
| /// |
| /// # Return value |
| /// |
| /// Always returns SGX_SUCCESS |
| #[no_mangle] |
| pub extern "C" fn say_something(some_string: *const u8, some_len: usize) -> sgx_status_t { |
| let str_slice = unsafe { slice::from_raw_parts(some_string, some_len) }; |
| let _ = io::stdout().write(str_slice); |
| |
| const PRIME: i64 = 1300477; |
| |
| let ref tss = tss::shamir::ShamirSecretSharing { |
| threshold: 9, |
| share_count: 20, |
| prime: PRIME, // any large enough prime will do |
| }; |
| |
| let secret: i64 = 23242; |
| println!("Secret generated is {}", secret); |
| let all_shares = tss.share(secret); |
| |
| let reconstruct_share_count = 10; |
| assert!(reconstruct_share_count >= tss.reconstruct_limit()); |
| |
| let indices: Vec<usize> = (0..reconstruct_share_count).collect(); |
| let shares: &[i64] = &all_shares[0..reconstruct_share_count]; |
| let recovered_secret = tss.reconstruct(&indices, shares); |
| |
| println!("The recovered secret is {}", recovered_secret); |
| assert_eq!(recovered_secret, secret); |
| |
| |
| sgx_status_t::SGX_SUCCESS |
| } |