From 6d4416bb633ba6384c1c3b5055c299213ccabb28 Mon Sep 17 00:00:00 2001
From: Federico <federico@safara.travel>
Date: Tue, 14 Apr 2020 22:55:16 +0200
Subject: [PATCH] Add hashLength

---
 README.md                     | 6 ++++--
 examples/hash-with-options.ts | 3 ++-
 lib/common.ts                 | 1 +
 native/command.rs             | 6 ++++++
 4 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index ad43a73..917dd1e 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ Deno.test("User#password should be an argon2id variant password", async () => {
 
 ### CLI
 
-It is possible to install deno-argon2 as a CLI tool insatiable via `deno install`.
+The library can be installed as a CLI tool via `deno install`.
 
 <details>
 
@@ -64,7 +64,7 @@ After install run `--help` to inspect all possible commands.
 
 ## Permissions
 
-This library automatically download the static library and initialize Deno plugin via [plugin_prepare](https://github.com/manyuanrong/deno-plugin-prepare) and it requires `--allow-read .deno_plugins`, `--allow-write .deno_plugins` and `--allow-plugin` to be specified.
+The library automatically download the static library and initialize Deno plugin via [plugin_prepare](https://github.com/manyuanrong/deno-plugin-prepare) and it requires `--allow-read`, `--allow-write`, `--allow-net` and `--allow-plugin`.
 
 <details>
 
@@ -104,3 +104,5 @@ deno-argon2
 ```
 
 ## License
+
+[MIT](LICENSE)
diff --git a/examples/hash-with-options.ts b/examples/hash-with-options.ts
index bb16537..cf997c6 100644
--- a/examples/hash-with-options.ts
+++ b/examples/hash-with-options.ts
@@ -2,7 +2,7 @@ import { hash, Variant, Version, ThreadMode } from "../lib/dev.ts";
 import { encode } from "../lib/deps.ts";
 
 let salt = crypto.getRandomValues(
-  new Uint8Array(Math.max(8, Math.random() * 32)),
+  new Uint8Array(20),
 );
 
 let secret = encode("my-super-secret");
@@ -16,6 +16,7 @@ console.log(await hash("test", {
   timeCost: 10,
   threadMode: ThreadMode.Parallel,
   lanes: 4,
+  hashLength: 32,
   data: {
     hashedAt: Date.now(),
     requestId: "a00d22c0-4681-4351-8c8f-6f02a42dd941",
diff --git a/lib/common.ts b/lib/common.ts
index f091e5d..c44c1d5 100644
--- a/lib/common.ts
+++ b/lib/common.ts
@@ -26,6 +26,7 @@ export interface HashOptions<T extends {} = {}> {
   timeCost: number;
   threadMode: ThreadMode;
   lanes: number;
+  hashLength: number;
 }
 
 export function version() {
diff --git a/native/command.rs b/native/command.rs
index 1e7e935..b8dafcd 100644
--- a/native/command.rs
+++ b/native/command.rs
@@ -19,6 +19,8 @@ pub struct HashOptions {
     lanes: Option<u32>,
     #[serde(rename(deserialize = "threadMode"))]
     thread_mode: Option<u8>,
+    #[serde(rename(deserialize = "hashLength"))]
+    hash_length: Option<u32>,
 }
 
 #[derive(Deserialize)]
@@ -108,6 +110,10 @@ fn hash_internal(data: &[u8]) -> Result<String, Error> {
         config.lanes = lanes;
     }
 
+    if let Some(hash_length) = params.options.hash_length {
+        config.hash_length = hash_length;
+    }
+
     if let Some(thread_mode) = params.options.thread_mode {
         match thread_mode {
             0 => config.thread_mode = ThreadMode::Sequential,