Expose argon2 in wasm

crates/bitwarden-wasm/Cargo.toml

@@ -15,6 +15,15 @@ keywords.workspace = true
 crate-type = ["cdylib"]
 
 [dependencies]
+argon2 = { version = ">=0.5.0, <0.6", features = [
+    "alloc",
+    "zeroize",
+], default-features = false }
+base64 = ">=0.21.2, <0.22"
+bitwarden-json = { path = "../bitwarden-json", features = [
+    "secrets",
+    "internal",
+] }
 console_error_panic_hook = "0.1.7"
 console_log = { version = "1.0.0", features = ["color"] }
 js-sys = "0.3.68"
@@ -23,10 +32,5 @@ serde = { version = "1.0.196", features = ["derive"] }
 wasm-bindgen = { version = "0.2.91", features = ["serde-serialize"] }
 wasm-bindgen-futures = "0.4.41"
 
-bitwarden-json = { path = "../bitwarden-json", features = [
-    "secrets",
-    "internal",
-] }
-
 [dev-dependencies]
 wasm-bindgen-test = "0.3.41"

crates/bitwarden-wasm/src/client.rs

@@ -1,6 +1,8 @@
 extern crate console_error_panic_hook;
 use std::rc::Rc;
 
+use argon2::{Algorithm, Argon2, Params, Version};
+use base64::{engine::general_purpose::STANDARD, Engine};
 use bitwarden_json::client::Client as JsonClient;
 use js_sys::Promise;
 use log::Level;
@@ -54,3 +56,29 @@ impl BitwardenClient {
         })
     }
 }
+
+#[wasm_bindgen]
+pub fn argon2(
+    password: &[u8],
+    salt: &[u8],
+    iterations: u32,
+    memory: u32,
+    parallelism: u32,
+) -> String {
+    let argon = Argon2::new(
+        Algorithm::Argon2id,
+        Version::V0x13,
+        Params::new(
+            memory * 1024, // Convert MiB to KiB
+            iterations,
+            parallelism,
+            Some(32),
+        )
+        .unwrap(),
+    );
+
+    let mut hash = [0u8; 32];
+    argon.hash_password_into(password, salt, &mut hash).unwrap();
+
+    STANDARD.encode(hash)
+}