Generate valid keys using rust

util/RustSdk/rust/src/lib.rs

@@ -1,3 +1,4 @@
+#![allow(clippy::missing_safety_doc)]
 use std::{
     ffi::{c_char, CStr, CString},
     num::NonZeroU32,
@@ -10,6 +11,39 @@ 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,
+    password: *const c_char,
+) -> *const c_char {
+    // TODO: We might want to make KDF configurable in the future.
+    let kdf = Kdf::PBKDF2 {
+        iterations: NonZeroU32::new(600_000).unwrap(),
+    };
+
+    let email = CStr::from_ptr(email).to_str().unwrap();
+    let password = CStr::from_ptr(password).to_str().unwrap();
+
+    let master_key = MasterKey::derive(password, email, &kdf).unwrap();
+    let master_password_hash = master_key
+        .derive_master_key_hash(password.as_bytes(), HashPurpose::ServerAuthorization)
+        .unwrap();
+    let (user_key, encrypted_user_key) = master_key.make_user_key().unwrap();
+    let keys = user_key.make_key_pair().unwrap();
+
+    let json = serde_json::json!({
+        "masterPasswordHash": master_password_hash,
+        "encryptedUserKey": encrypted_user_key.to_string(),
+        "publicKey": keys.public.to_string(),
+        "privateKey": keys.private.to_string(),
+    })
+    .to_string();
+
+    let result = CString::new(json).unwrap();
+
+    result.into_raw()
+}
+
 /// # Safety
 ///
 /// The `email` and `password` pointers must be valid null-terminated C strings.