👆 🔜 👀 👩‍💻 🔢 💖:

<img src="/img/tutorial/security/image07.png">

✔ 🈸 🎏 🌌 ⏭.

⚙️ 🎓:

🆔: `johndoe`
🔐: `secret`

/// check

👀 👈 🕳 📟 🔢 🔐 "`secret`", 👥 🕴 ✔️ #️⃣ ⏬.

///

<img src="/img/tutorial/security/image08.png">

🤙 🔗 `/users/me/`, 👆 🔜 🤚 📨:

```JSON
{
  "username": "johndoe",

        hmac.engineUpdate(TEST_DATA, 0, TEST_DATA.length);

        byte[] buffer = new byte[32];
        int bytesWritten = hmac.engineDigest(buffer, 5, 16);

        assertEquals(16, bytesWritten);
        // Check that bytes were written to the correct position
        byte[] extractedResult = Arrays.copyOfRange(buffer, 5, 21);
        assertEquals(16, extractedResult.length);
    }

    @Test

}

func TestErasureHeal(t *testing.T) {
	for i, test := range erasureHealTests {
		if test.offDisks < test.badStaleDisks {
			// test case sanity check
			t.Fatalf("Test %d: Bad test case - number of stale drives cannot be less than number of badstale drives", i)
		}

		// create some test data

        .url(server.url("/"))
        .method("POST", requestBody1)
        .build()
    val response1 = client.newCall(request1).execute()
    assertThat(response1.code).isEqualTo(200)

    // Call 2: check for the absence of a deadline on the request body.
    val requestBody2: RequestBody =
      object : RequestBody() {
        override fun contentType(): MediaType = "text/plain".toMediaType()

                        response.wait(timeout);

                        /*
                         * JetDirect printer can respond to regular broadcast query
                         * with node status so we need to check to make sure that
                         * the record type matches the question type and if not,
                         * loop around and try again.
                         */

   * initial write to timer is never definitely visible to Fire.run since it is assigned after
   * SES.schedule is called. Therefore Fire.run has to check for null. However, it should be visible
   * if Fire.run is called by delegate.addListener since addListener is called after the assignment
   * to timer, and importantly this is the main situation in which we need to be able to see the

        int offset = 10;

        // When
        int bytesWritten = request.writeBytesWireFormat(buffer, offset);

        // Then
        assertEquals(4, bytesWritten, "Should write 4 bytes");
        // Check that structure size (4) is written as 2-byte little-endian
        assertEquals(4, buffer[offset] | (buffer[offset + 1] << 8), "Structure size should be 4");
        assertEquals(0, buffer[offset + 2], "Reserved bytes should be 0");

        // Then
        assertEquals(TEST_DATA.length, bytesWritten);
        assertArrayEquals(TEST_DATA, dst);
    }

    @Test
    @DisplayName("Test writeDataWireFormat boundary check with offset")
    void testWriteDataWireFormatBoundaryWithOffset() {
        // Given
        transCallNamedPipe = new TransCallNamedPipe(mockConfig, TEST_PIPE_NAME, TEST_DATA, 0, TEST_DATA.length);

            throw new RuntimeCIFSException("Usage count dropped below zero");
        }
    }

    @Override
    protected void finalize() throws Throwable {
        try {
            // Add null check to prevent NPE if object was not fully constructed
            if (this.usageCount != null && this.usageCount.get() != 0) {
                log.warn("Tree handle was not properly released, performing emergency cleanup: "

        long time = System.currentTimeMillis();
        ServerMessageBlock.writeTime(time, buffer, 0);
        long readTime = ServerMessageBlock.readTime(buffer, 0);
        // Precision may be lost, so check within a second
        assertTrue(Math.abs(time - readTime) < 1000);
    }

    @Test
    void testTimeReadWriteZero() {
        byte[] buffer = new byte[8];
        ServerMessageBlock.writeTime(0, buffer, 0);