这是个多方门限签名库，使用rust实现。
代码包含两个功能，秘密共享密钥生成和使用秘密共享生成签名。

项目配置

开始之前先说说项目的配置问题（Rust这个配得脑壳痛）。。。😇
github上的opentss项目代码是一个virtual manifest，包含两个lib库，不能够直接执行。修改步骤如下，

1. 首先新建一个文件夹用作workspace，暂定名称为DKG，在里面添加Cargo.toml文件，内容为

[workspace]
members = ["multi_party_ecdsa","classgroup","dkg_test"
]

2. 接着将opentss的两个lib packageclassgroup和multi_party_ecdsa扔进去
3. 在workspace里面new 一个bin package 暂定名字为dkg_test，作为该workspace的主程序

cargo new dkg_test

4. 在dkg_test的Cargo.toml里添加内容，如下

[package]
name = "dkg_test"
version = "0.1.0"
edition = "2021"# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html[dependencies]
multi_party_ecdsa = { path = "../multi_party_ecdsa" }
classgroup = { path = "../classgroup" }

目的是将两个lib package 引入到项目里
注意！！！😇这里有个坑：multi_party_ecdsa = { path = "../multi_party_ecdsa" }左边的名字要和multi_party_ecdsa/Cargo.toml里的name一致，不然要报错，建议把原来的-改成_，这样就一致了。

3. 将opentss里面的Cargo.lock拷贝到DKG目录里，覆盖掉DKG项目的，文件里面包含了很多依赖项。最终的结构如下

4. 然后就可以在main.rs里编写代码了

方案测试

环境调试

github上的代码如下

use multi_party_ecdsa::communication::sending_messages::SendingMessages;
use multi_party_ecdsa::protocols::multi_party::dmz21::keygen::KeyGenPhase;
use multi_party_ecdsa::protocols::multi_party::dmz21::keygen::Parameters;
fn main() {// New a Phase object.let partyid = "1".to_string();let params = Parameters {threshold: 1,share_count: 3,};let party_ids = vec!["1".to_string(), "2".to_string(), "3".to_string()];let mut keygen = KeyGenPhase::new(partyid, params, &Some(party_ids)).unwrap();//Start by calling process_begin, which returns the message to be sent in the next round.let sending_msg: SendingMessages = keygen.process_begin().unwrap();/* According to the SendingMessages type(Broadcast, P2P, etc.) and content, we can package the index(from, self partyid) with the message(msg) to the other participant(s).*/match sending_msg {SendingMessages::BroadcastMessage(msg) => {// broadcast the msg to all(including self).}SendingMessages::P2pMessage(msg) => {// send according to the k,v in the msg. k is the index which v will to be sent to.}SendingMessages::SubsetMessage(msg) => {// send according to the k in the party_ids or subset(used in sign phase). k is the index which msg will to be sent to.}_ => {}}//Handling messages by msg_handler./*When a message has been received, got the recv_from and recv_msg, and then pass them into msg_handler, which returns a result or the message to be sent in the next round.*/loop {// let (recv_from, recv_msg) = According to the last round of SendingMessageslet recv_from = "".to_string();let recv_msg = vec![0u8];let sending_msg = keygen.msg_handler(recv_from, &recv_msg).unwrap();match sending_msg {SendingMessages::KeyGenSuccessWithResult(msg) => {// got the keygen resultbreak;}_ => {// other sending messages, ref Step 2.}}}//Once SendingMessages::KeyGenSuccessWithResult is received, it indicates completion.}

编译的时候会报错，

链接报错

这里有个GBK乱码，用py转换一下，代码如下

content = b"LINK : fatal error LNK1181: \xce\xde\xb7\xa8\xb4\xf2\xbf\xaa\xca\xe4\xc8\xeb\xce\xc4\xbc\xfe\xa1\xb0gmp.lib\xa1\xb1\r\n"
print(content.decode("gbk"))

结果

本地用everything搜了一下，没有gmp.lib所以需要安装，这个是c艹中用于复杂运算的一个库，默认没有需要下载第三方的，然后自行编译。。。
这里选择用vcpkg这个包管理工具，来安装编译库

温馨提示：要想联动下面的貌似需要安装rust的时候选择MSVC版

安装vcpkg

先装个vs，社区版就行，勾选上c++和SDK
库地址

• 自行clone或者下载压缩包git clone https://github.com/microsoft/vcpkg
• 进入文件夹执行.\bootstrap-vcpkg.bat，执行完目录下会多一个vcpkg.exe
• 全局安装，可以在vs中使用该库：.\vcpkg integrate install
• 把它添加到环境变量Path里面

配置环境变量

安装vckpg_cli

主要是用来检查Rust是否能找到安装的库

• cargo install vckpg_cli

安装库

安装包之前，需要装个英文语言包
去visual Studio Installer里面，点击修改->语言，把英文勾选上

• vcpkg search gmp
• vcpkg install gmp:x64-windows，默认x86的

首次执行会消耗很久时间，好几个小时，也有可能会因为网络问题需要用魔法。
装好后，可以在vs里面测试一下看看装成功没有，代码如下

#include
#includevoid foo(mpz_t result, const mpz_t param, unsigned long n) {unsigned long  i; mpz_mul_ui(result, param, n);for (i = 1; i < n; i++)mpz_add_ui(result, result, i * 7);
}int main() {mpz_t  r, n;mpz_init(r); mpz_init_set_str(n, "123456", 0); foo(r, n, 20L); gmp_printf("%Zd\n", r); return 0;
}

如果遇到报错 error C4146: 一元负运算符应用于无符号类型，结果仍为无符号类型
打开 项目->属性->C/C++, 关闭SDL检查，即可。

• 用vcpkg_cli检查一下是能否被rust识别

vcpkg_cli probe gmp

如果不能识别的话，可以重启一下再试试。

再修改一下配置

主要是rust项目要用到编译的第三方非Rust代码，比如这个gmp库。

• 在项目dkg_test目录下新建一个文件build.rs，内容如下：

fn main() {vcpkg::find_package("gmp").unwrap();
}

这个会在编译rust项目之前编译

• 改一下dkg_test下的Cargo.toml，增加一个[build-dependencies]，完整的如下

[package]
name = "dkg_test"
version = "0.1.0"
edition = "2021"# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html[dependencies]
multi_party_ecdsa = { path = "../multi_party_ecdsa" }
classgroup = { path = "../classgroup" }[build-dependencies]
vcpkg = "0.2.15"

ok，一切就位，开编！！！

代码

奈斯！编译通过，跑一下试试cargo run

很好，惹烈的🐎，又报错。。。真***🐎的。。。😇😇😇
找了一下原因是，这段代码本来就跑不了，暗似春竹。
能跑的代码在opentss/multi_party_ecdsa/src/protocols/multi_party/dmz21/local.rs里面，代码
好了废话不说了

跑起来

• 将local.rs的代码拷贝到main.rs里面，注意修改包名

添加一个main函数，不然要报错

• 接着是继续修改dkg_test下的Cargo.toml文件，运行环境需要，完整内容如下

[package]
name = "dkg_test"
version = "0.1.0"
edition = "2021"# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html[dependencies]
multi_party_ecdsa = { path = "../multi_party_ecdsa" }
classgroup = { path = "../classgroup" }
libc = "0.2.0"
subtle = { version = "2" }
serde = { version = "1.0", features = ["derive"] }
serde_derive="1.0"
serde_json="1.0"
bincode = "1.3.1"
zeroize = "1.3.0"
time = "0.1"
hex = { version = "0.4", features = ["serde"] }
rand = "0.7"
curve25519-dalek = { version = "3", features = ["serde"] }
thiserror = "1"
sha2 = "0.9"
sha3 = "0.9"
# use https://github.com/ZenGo-X/curv.git -b 44537a74 (which fixs deserialization, of v0.9.0)
curv = { package = "curv-kzen", git="https://github.com/ZenGo-X/curv.git", rev="44537a74"}lazy_static = "1.4.0"
log = "0.4.6"
anyhow = "1.0"crossbeam = "0.8"
crossbeam-channel = "0.5"[build-dependencies]
vcpkg = "0.2.15"

保存，拉到main.rs代码最底，如下

值得注意的是，这里的main函数没有包含代码，只是为了整体不报错，再看看#[test]这个代表单元测试，可以单独运行，而在cargo build编译的时候会自动忽略，而cargo test则可以执行。（还没学到rust测试，只能初步用用）
这里只为测试一下密钥生成和签名，所以直接点击就行了
点击第一个密钥生成，结果如下：

点击第二个签名，结果如下

over！