Initial commit: feishu + wecom extensions

2026-02-15 00:37:39 +08:00
commit 194a506da0
105 changed files with 36880 additions and 0 deletions
@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+
+import { computeWecomMsgSignature, decryptWecomEncrypted, encryptWecomPlaintext } from "./crypto.js";
+
+describe("wecom crypto", () => {
+  it("round-trips plaintext", () => {
+    const encodingAESKey = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG"; // 43 chars base64 (plus '=' padding)
+    const plaintext = JSON.stringify({ hello: "world" });
+    const encrypt = encryptWecomPlaintext({ encodingAESKey, receiveId: "", plaintext });
+    const decrypted = decryptWecomEncrypted({ encodingAESKey, receiveId: "", encrypt });
+    expect(decrypted).toBe(plaintext);
+  });
+
+  it("pads correctly when raw length is a multiple of 32", () => {
+    const encodingAESKey = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG";
+    // raw length = 20 + plaintext.length + receiveId.length; choose plaintext length % 32 === 12
+    const plaintext = "x".repeat(12);
+    const encrypt = encryptWecomPlaintext({ encodingAESKey, receiveId: "", plaintext });
+    const decrypted = decryptWecomEncrypted({ encodingAESKey, receiveId: "", encrypt });
+    expect(decrypted).toBe(plaintext);
+  });
+
+  it("computes sha1 msg signature", () => {
+    const sig = computeWecomMsgSignature({
+      token: "token",
+      timestamp: "123",
+      nonce: "456",
+      encrypt: "ENCRYPT",
+    });
+    expect(sig).toMatch(/^[a-f0-9]{40}$/);
+  });
+});