From 2ca58d8b5ad8f7d5d09dec35a7076a0e5089deba Mon Sep 17 00:00:00 2001
From: Vecna <vvecna@uwaterloo.ca>
Date: Mon, 26 Feb 2024 17:50:37 -0500
Subject: [PATCH] Use const for generating H

---
 crates/lox-library/src/proto/positive_report.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/crates/lox-library/src/proto/positive_report.rs b/crates/lox-library/src/proto/positive_report.rs
index 6e36b09..7151c10 100644
--- a/crates/lox-library/src/proto/positive_report.rs
+++ b/crates/lox-library/src/proto/positive_report.rs
@@ -30,6 +30,7 @@ use super::super::cred;
 use super::super::scalar_u32;
 use super::super::{BridgeAuth, IssuerPubKey};
 use super::super::{CMZ_A, CMZ_A_TABLE};
+pub const H_GENERATOR_STRING: &str = "PR Generator H for ";
 
 #[derive(Serialize, Deserialize)]
 pub struct Request {
@@ -92,7 +93,7 @@ pub fn request(lox_cred: &cred::Lox, lox_pub: &IssuerPubKey) -> Result<Request,
         .try_into()
         .unwrap();
     let H: RistrettoPoint = RistrettoPoint::hash_from_bytes::<Sha512>(
-        format!("PR Generator H for {}", date).as_bytes(),
+        format!("{}{}", H_GENERATOR_STRING, date).as_bytes(),
     );
     let Htable: RistrettoBasepointTable = RistrettoBasepointTable::create(&H);
 
@@ -235,7 +236,7 @@ impl BridgeAuth {
     pub fn handle_positive_report(&mut self, req: Request) -> Result<(), ProofError> {
         let A: &RistrettoPoint = &CMZ_A;
         let H: RistrettoPoint = RistrettoPoint::hash_from_bytes::<Sha512>(
-            format!("PR Generator H for {}", req.date).as_bytes(),
+            format!("{}{}", H_GENERATOR_STRING, req.date).as_bytes(),
         );
 
         if req.P.is_identity() {