var decryptTests = []struct {
	Key       []byte
	ETag      ETag
	Plaintext ETag
}{
	{ // 0
		Key:       make([]byte, 32),
		ETag:      must("3b83ef96387f14655fc854ddc3c6bd57"),
		Plaintext: must("3b83ef96387f14655fc854ddc3c6bd57"),
	},
	{ // 1
		Key:       make([]byte, 32),
		ETag:      must("7b976cc68452e003eec7cb0eb631a19a-1"),
		Plaintext: must("7b976cc68452e003eec7cb0eb631a19a-1"),
	},
	{ // 2

//// tab | Linux, macOS

```plaintext
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
```

Это означает, что система должна искать программы в каталогах:

* `/usr/local/bin`
* `/usr/bin`
* `/bin`
* `/usr/sbin`
* `/sbin`

////

//// tab | Windows

```plaintext
C:\Program Files\Python312\Scripts;C:\Program Files\Python312;C:\Windows\System32

```plaintext
/home/user/code/awesome-project/.venv/bin/python
```

and use that one.

////

//// tab | Windows

```plaintext
C:\Users\user\code\awesome-project\.venv\Scripts;C:\Windows\System32
```

That means that the system will now start looking first look for programs in:

```plaintext
C:\Users\user\code\awesome-project\.venv\Scripts
```

// It returns ErrKeyNotFound if the key does not exist.
func (k *KMS) Decrypt(ctx context.Context, req *DecryptRequest) ([]byte, error) {
	start := time.Now()
	plaintext, err := k.conn.Decrypt(ctx, req)
	k.updateMetrics(err, time.Since(start))

	return plaintext, err
}

// MAC generates the checksum of the given req.Message using the key
// with the req.Name at the KMS.

          //
          // Raw write
          // Raw read
          // Plaintext before ENCRYPTION
          // Plaintext after DECRYPTION
          val message = record.message
          val parameters = record.parameters

          if (parameters != null && !message.startsWith("Raw") && !message.startsWith("Plaintext")) {
            if (verbose) {
              println(record.message)

```plaintext
/home/user/code/awesome-project/.venv/bin/python
```

e usa esse.

////

//// tab | Windows

```plaintext
C:\Users\user\code\awesome-project\.venv\Scripts;C:\Windows\System32
```

Isso significa que o sistema agora começará a procurar primeiro por programas em:

```plaintext
C:\Users\user\code\awesome-project\.venv\Scripts
```

	if !etag.IsEncrypted() {
		return etag, nil
	}
	mac := hmac.New(sha256.New, key)
	mac.Write([]byte(HMACContext))
	decryptionKey := mac.Sum(nil)

	plaintext := make([]byte, 0, 16)
	etag, err := sio.DecryptBuffer(plaintext, etag, sio.Config{
		Key:          decryptionKey,
		CipherSuites: fips.DARECiphers(),
	})
	if err != nil {
		return nil, err
	}
	return etag, nil
}

##### Figure 1 - Secure Channel construction

```
plaintext   := chunk_0          ||       chunk_1          ||       chunk_2          ||       ...

////

### Check the password

At this point we have the user data from our database, but we haven't checked the password.

Let's put that data in the Pydantic `UserInDB` model first.

You should never save plaintext passwords, so, we'll use the (fake) password hashing system.

If the passwords don't match, we return the same error.

#### Password hashing

			AssociatedData: kms.Context{bucket: path.Join(bucket, object)},
		})
		if err != nil {
			return crypto.ObjectKey{}, err
		}

		objectKey := crypto.GenerateKey(key.Plaintext, rand.Reader)
		sealedKey = objectKey.Seal(key.Plaintext, crypto.GenerateIV(rand.Reader), crypto.S3.String(), bucket, object)
		crypto.S3.CreateMetadata(metadata, key.KeyID, key.Ciphertext, sealedKey)
		return objectKey, nil
	case crypto.S3KMS: