Move away from openssl

src-tauri/Cargo.toml

@@ -31,12 +31,13 @@ tauri-plugin-notification = "2.3.3"
 sha2 = "0.11.0"
 tauri-plugin-clipboard-manager = "2.3.2"
 tauri-plugin-prevent-default = "5.0.0"
-openssl = { version = "0.10.78", features = ["vendored"] }
 base64 = "0.22.1"
 tauri-plugin-http = "2.5.8"
 dashmap = "6.1.0"
 tauri-plugin-store = "2.4.2"
 hex = "0.4.3"
+ed25519-dalek = { version = "2.2.0", features = ["pkcs8"] }
+pem = "3.0.6"
 
 [target.'cfg(any(target_os = "windows", target_os = "linux"))'.dependencies]
 sysinfo = "0.38.4"

src-tauri/src/lib.rs

@@ -1,8 +1,9 @@
-use base64::{Engine as _, engine::general_purpose};
+use base64::Engine;
 use dashmap::DashMap;
+use ed25519_dalek::pkcs8::DecodePublicKey;
+use ed25519_dalek::{Signature, Verifier, VerifyingKey};
 use futures_util::stream::StreamExt;
-use openssl::pkey::PKey;
-use openssl::sign::Verifier;
+use pem::parse;
 use sha2::{Digest, Sha512};
 use std::fs;
 use std::path::Path;
@@ -509,24 +510,31 @@ fn launch_game(
 
 #[tauri::command]
 fn verify_signature(body: String, signature: String, public_key: String) -> bool {
-    let Ok(pem) = general_purpose::STANDARD.decode(public_key) else {
-        return false;
-    };
-    let Ok(pubkey) = PKey::public_key_from_pem(&pem) else {
-        return false;
-    };
-    let Ok(sig) = general_purpose::STANDARD.decode(signature) else {
+    let Ok(pubkey_pem_bytes) = base64::engine::general_purpose::STANDARD.decode(public_key) else {
         return false;
     };
 
-    let mut verifier = match Verifier::new_without_digest(&pubkey) {
-        Ok(v) => v,
-        Err(_) => return false,
+    let Ok(sig_bytes) = base64::engine::general_purpose::STANDARD.decode(signature) else {
+        return false;
     };
 
-    verifier
-        .verify_oneshot(&sig, body.as_bytes())
-        .unwrap_or(false)
+    let Ok(pubkey_pem) = String::from_utf8(pubkey_pem_bytes) else {
+        return false;
+    };
+
+    let Ok(parsed) = parse(pubkey_pem) else {
+        return false;
+    };
+
+    let Ok(pubkey) = VerifyingKey::from_public_key_der(&parsed.contents()) else {
+        return false;
+    };
+
+    let Ok(sig) = Signature::from_slice(&sig_bytes) else {
+        return false;
+    };
+
+    pubkey.verify(body.as_bytes(), &sig).is_ok()
 }
 
 #[tauri::command]