Speed up KDF

util/RustSdk/RustSdk.csproj

@@ -10,17 +10,17 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Content Include="rust/target/debug/libsdk.dylib">
+    <Content Include="rust/target/release/libsdk.dylib">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       <PackageCopyToOutput>true</PackageCopyToOutput>
       <Link>runtimes/osx-arm64/native/libsdk.dylib</Link>
     </Content>
-    <Content Include="./rust/target/debug/libsdk.so">
+    <Content Include="./rust/target/release/libsdk.so">
       <PackageCopyToOutput>true</PackageCopyToOutput>
     </Content>
-    <Content Include="./rust/target/debug/libsdk.dll">
+    <Content Include="./rust/target/release/libsdk.dll">
       <PackageCopyToOutput>true</PackageCopyToOutput>
     </Content>
   </ItemGroup>
 
-</Project>
+</Project>

util/RustSdk/rust/Cargo.toml

@@ -20,3 +20,14 @@ serde_json = "=1.0.141"
 
 [build-dependencies]
 csbindgen = "=1.9.3"
+
+# Compile all dependencies with some optimizations when building this crate on debug
+# This slows down clean builds by about 50%, but the resulting binaries can be orders of magnitude faster
+# As clean builds won't occur very often, this won't slow down the development process
+[profile.dev.package."*"]
+opt-level = 2
+
+[profile.release]
+codegen-units = 1
+lto = true
+opt-level = 3

util/RustSdk/rust/src/lib.rs

@@ -11,11 +11,6 @@ use bitwarden_crypto::{
     SpkiPublicKeyBytes, SymmetricCryptoKey, UnsignedSharedKey, UserKey,
 };
 
-#[no_mangle]
-pub extern "C" fn my_add(x: i32, y: i32) -> i32 {
-    x + y
-}
-
 #[no_mangle]
 pub unsafe extern "C" fn generate_user_keys(
     email: *const c_char,
@@ -23,7 +18,7 @@ pub unsafe extern "C" fn generate_user_keys(
 ) -> *const c_char {
     // TODO: We might want to make KDF configurable in the future.
     let kdf = Kdf::PBKDF2 {
-        iterations: NonZeroU32::new(600_000).unwrap(),
+        iterations: NonZeroU32::new(5_000).unwrap(),
     };
 
     let email = CStr::from_ptr(email).to_str().unwrap();