nostr/nostr-rs-relay
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improvement: event signature validation is 100x faster

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Switched to latest (git) release of secp256k1, which has more
efficient verification-only context for Schnorr.  Switched to single
pre-instantiated instance of the verifier.
This commit is contained in:
Greg Heartsfield 2022-01-01 09:08:19 -06:00
parent 620e227699
commit 1aa5a5458d
4 changed files with 29 additions and 17 deletions
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16
Cargo.lock generated
View File

@ -66,6 +66,12 @@ dependencies = [
"serde 1.0.131", "serde 1.0.131",
] ]
[[package]]
name = "bitcoin_hashes"
version = "0.10.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "006cc91e1a1d99819bc5b8214be3555c1f0611b169f527a1fdc54ed1f2b745b0"
[[package]] [[package]]
name = "bitflags" name = "bitflags"
version = "1.3.2" version = "1.3.2"
@ -645,7 +651,7 @@ checksum = "38bf9645c8b145698bb0b18a4637dcacbc421ea49bef2317e4fd8065a387cf21"
name = "nostr-rs-relay" name = "nostr-rs-relay"
version = "0.2.2" version = "0.2.2"
dependencies = [ dependencies = [
"bitcoin_hashes", "bitcoin_hashes 0.9.7",
"config", "config",
"env_logger", "env_logger",
"futures", "futures",
@ -1031,10 +1037,9 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
[[package]] [[package]]
name = "secp256k1" name = "secp256k1"
version = "0.20.3" version = "0.20.3"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "git+https://github.com/rust-bitcoin/rust-secp256k1.git?rev=50034ccb18fdd84904ab3aa6c84a12fcced33209#50034ccb18fdd84904ab3aa6c84a12fcced33209"
checksum = "97d03ceae636d0fed5bae6a7f4f664354c5f4fcedf6eef053fef17e49f837d0a"
dependencies = [ dependencies = [
"bitcoin_hashes", "bitcoin_hashes 0.10.0",
"rand 0.6.5", "rand 0.6.5",
"secp256k1-sys", "secp256k1-sys",
"serde 1.0.131", "serde 1.0.131",
@ -1043,8 +1048,7 @@ dependencies = [
[[package]] [[package]]
name = "secp256k1-sys" name = "secp256k1-sys"
version = "0.4.1" version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "git+https://github.com/rust-bitcoin/rust-secp256k1.git?rev=50034ccb18fdd84904ab3aa6c84a12fcced33209#50034ccb18fdd84904ab3aa6c84a12fcced33209"
checksum = "827cb7cce42533829c792fc51b82fbf18b125b45a702ef2c8be77fce65463a7b"
dependencies = [ dependencies = [
"cc", "cc",
] ]

2
Cargo.toml
View File

@ -15,7 +15,7 @@ thiserror = "^1"
uuid = { version = "^0.8", features = ["v4"] } uuid = { version = "^0.8", features = ["v4"] }
config = { version = "0.11", features = ["toml"] } config = { version = "0.11", features = ["toml"] }
bitcoin_hashes = { version = "^0.9", features = ["serde"] } bitcoin_hashes = { version = "^0.9", features = ["serde"] }
secp256k1 = { version = "^0.20", features = ["rand", "rand-std", "serde", "bitcoin_hashes"] } secp256k1 = {git = "https://github.com/rust-bitcoin/rust-secp256k1.git", rev = "50034ccb18fdd84904ab3aa6c84a12fcced33209", features = ["rand", "rand-std", "serde", "bitcoin_hashes"] }
serde = { version = "^1.0", features = ["derive"] } serde = { version = "^1.0", features = ["derive"] }
serde_json = "^1.0" serde_json = "^1.0"
hex = "^0.4" hex = "^0.4"

20
src/event.rs
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@ -3,14 +3,19 @@ use crate::config;
use crate::error::Error::*; use crate::error::Error::*;
use crate::error::Result; use crate::error::Result;
use bitcoin_hashes::{sha256, Hash}; use bitcoin_hashes::{sha256, Hash};
use lazy_static::lazy_static;
use log::*; use log::*;
use secp256k1::{schnorrsig, Secp256k1}; use secp256k1::{schnorr, Secp256k1, VerifyOnly, XOnlyPublicKey};
use serde::{Deserialize, Deserializer, Serialize}; use serde::{Deserialize, Deserializer, Serialize};
use serde_json::value::Value; use serde_json::value::Value;
use serde_json::Number; use serde_json::Number;
use std::str::FromStr; use std::str::FromStr;
use std::time::SystemTime; use std::time::SystemTime;
lazy_static! {
pub static ref SECP: Secp256k1<VerifyOnly> = Secp256k1::verification_only();
}
/// Event command in network format /// Event command in network format
#[derive(Serialize, Deserialize, PartialEq, Debug, Clone)] #[derive(Serialize, Deserialize, PartialEq, Debug, Clone)]
pub struct EventCmd { pub struct EventCmd {
@ -109,12 +114,15 @@ impl Event {
return false; return false;
} }
// * validate the message digest (sig) using the pubkey & computed sha256 message hash. // * validate the message digest (sig) using the pubkey & computed sha256 message hash.
let secp = Secp256k1::new(); let sig = schnorr::Signature::from_str(&self.sig).unwrap();
let sig = schnorrsig::Signature::from_str(&self.sig).unwrap(); if let Ok(msg) = secp256k1::Message::from_slice(digest.as_ref()) {
let message = secp256k1::Message::from(digest); let pubkey = XOnlyPublicKey::from_str(&self.pubkey).unwrap();
let pubkey = schnorrsig::PublicKey::from_str(&self.pubkey).unwrap(); let verify = SECP.verify_schnorr(&sig, &msg, &pubkey);
let verify = secp.schnorrsig_verify(&sig, &message, &pubkey);
matches!(verify, Ok(())) matches!(verify, Ok(()))
} else {
warn!("Error converting digest to secp256k1 message");
false
}
} }
/// Convert event to canonical representation for signing. /// Convert event to canonical representation for signing.

6
src/main.rs
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@ -98,9 +98,9 @@ async fn handle_web_request(
} }
("/", false) => { ("/", false) => {
// handle request at root with no upgrade header // handle request at root with no upgrade header
Ok(Response::new(Body::from(format!( Ok(Response::new(Body::from(
"This is a Nostr relay.\n" "This is a Nostr relay.\n".to_string(),
)))) )))
} }
(_, _) => { (_, _) => {
//handle any other url //handle any other url