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#[macro_use]
extern crate lazy_static;
#[macro_use]
extern crate log;
mod blindbid;
mod buffer;
mod gadgets;
mod pipe;
use buffer::BytesArray;
use curve25519_dalek::scalar::Scalar;
use pipe::NamedPipe;
use std::env;
use std::io::prelude::*;
extern crate chrono;
extern crate env_logger;
use chrono::Local;
use env_logger::Builder;
use log::LevelFilter;
use std::io::Write;
fn get_log_level() -> LevelFilter {
let args: Vec<String> = env::args().collect();
if args.len() < 2 {
return LevelFilter::Info;
}
let flag: &str = &args[1];
match flag {
"-t" => LevelFilter::Trace,
"-d" => LevelFilter::Debug,
_ => LevelFilter::Info,
}
}
fn main() -> std::io::Result<()> {
Builder::new()
.format(|buf, record| {
writeln!(
buf,
"{} [{}] - {}",
Local::now().format("%Y-%m-%dT%H:%M:%S"),
record.level(),
record.args()
)
})
.filter(None, get_log_level())
.init();
let mut pipefile = env::temp_dir();
pipefile.push("pipe-channel");
let mut pipe = NamedPipe::new(pipefile);
pipe.connect();
loop {
let mut buf = Vec::new();
info!("\nWaiting for content to read...\n");
pipe.read_to_end(&mut buf)?;
let buf_len = buf.len();
info!(">> Read {} bytes.", &buf_len);
trace!("{:?}", &buf);
let opcode = buf[0];
debug!("Opcode: {}", &opcode);
if opcode == 1 {
let ba: BytesArray = (&buf[1..buf_len - 1]).into();
let mut bytes = ba.into_iter();
let toggle = buf[buf_len - 1] as usize;
info!("Generating <proof>");
let result = prove(
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
toggle,
);
let data: Vec<u8> = result.unwrap().into();
debug!("<proof> is: {} bytes", &data.len());
trace!("{:?}", &data);
info!("<< Write <proof> to named pipe.");
pipe.write(&data)?;
} else if opcode == 2 {
let ba: BytesArray = (&buf[1..buf_len]).into();
info!("Verify <proof>");
let mut bytes = ba.into_iter();
let result = verify(
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
bytes.next().unwrap().into(),
);
if result {
info!("Succeed.");
} else {
info!("Failed.");
}
info!("<< Write <result> to named pipe.");
pipe.write(&[result as u8])?;
}
}
}
fn prove(
d: Scalar,
k: Scalar,
y: Scalar,
y_inv: Scalar,
q: Scalar,
z_img: Scalar,
seed: Scalar,
pub_list: Vec<Scalar>,
toggle: usize,
) -> Option<BytesArray> {
match blindbid::prove(d, k, y, y_inv, q, z_img, seed, pub_list, toggle) {
Ok((proof, commitments, t_c)) => {
let mut bytes: BytesArray = BytesArray::new();
bytes.push(proof.into());
bytes.push(commitments.into());
bytes.push(t_c.into());
Some(bytes)
}
Err(_) => None,
}
}
fn verify(
bytes: BytesArray,
seed: Scalar,
pub_list: Vec<Scalar>,
q: Scalar,
z_img: Scalar,
) -> bool {
let mut bytes = bytes.into_iter();
let proof = bytes.next().unwrap();
let commitments = bytes.next().unwrap();
let t_c = bytes.next().unwrap();
blindbid::verify(
proof.into(),
commitments.into(),
t_c.into(),
seed,
pub_list,
q,
z_img,
)
.is_ok()
}