4 files changed, 174 insertions, 0 deletions
diff --git a/app.ts b/app.ts
new file mode 100644
index 0000000..c80d508
--- /dev/null
+++ b/app.ts
@@ -0,0 +1,84 @@
+import { Hono } from "https://deno.land/x/hono/mod.ts";
+import { create, verify } from "https://deno.land/x/djwt@v3.0.2/mod.ts";
+import { crypto } from "https://deno.land/std@0.140.0/crypto/mod.ts";
+import { serve } from "https://deno.land/std@0.224.0/http/server.ts";
+
+const app = new Hono();
+
+// シークレットキーをファイルから読み込む
+const loadKey = async () => {
+  try {
+    const keyData = await Deno.readFile("secret.key");
+    return await crypto.subtle.importKey(
+      "raw",
+      keyData,
+      { name: "HMAC", hash: "SHA-512" },
+      true,
+      ["sign", "verify"]
+    );
+  } catch (error) {
+    console.error("Error loading key:", error);
+    throw error;
+  }
+};
+
+// ユーザーのログイン処理
+app.post("/login", async (c) => {
+  try {
+    const { username, password } = await c.req.json();
+
+    // ユーザー認証のロジック (ここでは仮の認証を使用)
+    if (username === "usesr" && password === "password") {
+      const key = await loadKey();
+
+      // JWTを生成
+      const jwt = await create(
+        { alg: "HS512", typ: "JWT" },
+        { username: username }, 
+        key
+      );
+
+      return c.json({ message: "Login successful", token: jwt });
+    } else {
+      return c.json({ message: "Invalid username or password" }, 401);
+    }
+  } catch (error) {
+    console.error("Login error:", error);
+    return c.json({ message: "Internal Server Error", error: error.message }, 500);
+  }
+});
+
+// JWT検証
+app.use("*", async (c, next) => {
+  if (c.req.method === "POST" && c.req.url.includes("/login")) {
+    await next();
+    return;
+  }
+
+  try {
+    const authHeader = c.req.headers.get("Authorization");
+    if (!authHeader) {
+      return c.json({ message: "Authorization header missing" }, 401);
+    }
+
+    const token = authHeader.replace("Bearer ", "");
+    const key = await loadKey();
+    const payload = await verify(token, key);
+
+    c.req.state = { payload };
+    await next();
+  } catch (error) {
+    console.error("JWT verification error:", error);
+    return c.json({ message: "Unauthorized", error: error.message }, 401);
+  }
+});
+
+app.get("/", (c) => {
+  return c.json({ message: "Hello, world!" });
+});
+
+// Honoサーバーの起動
+const port = 8787;
+console.log(`Server running on http://localhost:${port}`);
+await serve(app.fetch, { port });
+
diff --git a/deps.ts b/deps.ts
new file mode 100644
index 0000000..ddbbca4
--- /dev/null
+++ b/deps.ts
@@ -0,0 +1,2 @@
+export { Hono } from "https://deno.land/x/hono/mod.ts";
+export { bearerAuth } from "https://deno.land/x/hono/bearer_auth.ts";
diff --git a/generate_key.ts b/generate_key.ts
new file mode 100644
index 0000000..f241f6e
--- /dev/null
+++ b/generate_key.ts
@@ -0,0 +1,25 @@
+import { crypto } from "https://deno.land/std@0.140.0/crypto/mod.ts";
+
+const generateKey = async () => {
+  try {
+    // 32バイトのHMACキーを生成
+    const key = await crypto.subtle.generateKey(
+      { name: "HMAC", hash: "SHA-512" },
+      true,
+      ["sign", "verify"]
+    );
+
+    // キーをエクスポート
+    const exportedKey = await crypto.subtle.exportKey("raw", key);
+    const keyUint8Array = new Uint8Array(exportedKey);
+
+    // キーをファイルに保存
+    await Deno.writeFile("secret.key", keyUint8Array);
+    console.log("Secret key generated and saved to 'secret.key'.");
+  } catch (error) {
+    console.error("Error generating or saving key:", error);
+  }
+};
+
+await generateKey();
+
diff --git a/token_operations.ts b/token_operations.ts
new file mode 100644
index 0000000..0e5b85f
--- /dev/null
+++ b/token_operations.ts
@@ -0,0 +1,63 @@
+import { create, verify } from "https://deno.land/x/djwt@v3.0.2/mod.ts";
+import { crypto } from "https://deno.land/std@0.140.0/crypto/mod.ts";
+
+// シークレットキーをファイルから読み込む
+const loadKey = async () => {
+  try {
+    const keyData = await Deno.readFile("secret.key");
+    return await crypto.subtle.importKey(
+      "raw",
+      keyData,
+      { name: "HMAC", hash: "SHA-512" },
+      true,
+      ["sign", "verify"]
+    );
+  } catch (error) {
+    console.error("Error loading key:", error);
+  }
+};
+
+// JWTを生成する
+const createToken = async (key: CryptoKey) => {
+  try {
+    const jwt = await create(
+      { alg: "HS512", typ: "JWT" }, // ヘッダー
+      { foo: "bar" }, // ペイロード
+      key // CryptoKey
+    );
+    console.log("Generated JWT:", jwt);
+    return jwt;
+  } catch (error) {
+    console.error("Error creating token:", error);
+  }
+};
+
+// JWTを検証する
+const verifyToken = async (token: string, key: CryptoKey) => {
+  try {
+    const payload = await verify(token, key);
+    console.log("Payload:", payload);
+  } catch (error) {
+    console.error("Error verifying token:", error);
+  }
+};
+
+const run = async () => {
+  try {
+    const key = await loadKey();
+    if (!key) {
+      console.error("Failed to load key.");
+      return;
+    }
+
+    const token = await createToken(key);
+    if (token) {
+      await verifyToken(token, key);
+    }
+  } catch (error) {
+    console.error("Error during token operations:", error);
+  }
+};
+
+await run();
+