#### Encryption at Rest
* [alpha] Encrypt secrets stored in etcd. For more information, see [Securing a Cluster](https://kubernetes.io/docs/tasks/administer-cluster/securing-a-cluster/) and [Encrypting data at rest](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/).

#### Node Authorization

	if h.Get(xhttp.AmzServerSideEncryption) != xhttp.AmzEncryptionAES {
		return ErrInvalidEncryptionMethod
	}
	return nil
}

// IsEncrypted returns true if the object metadata indicates
// that the object was uploaded using SSE-S3.
func (sses3) IsEncrypted(metadata map[string]string) bool {
	if _, ok := metadata[MetaSealedKeyS3]; ok {
		return true
	}
	return false
}

	LifecycleAuditEvent lcAuditEvent

	WantChecksum *hash.Checksum // x-amz-checksum-XXX checksum sent to PutObject/ CompleteMultipartUpload.

	NoDecryption                        bool      // indicates if the stream must be decrypted.
	PreserveETag                        string    // preserves this etag during a PUT call.
	NoLock                              bool      // indicates to lower layers if the caller is expecting to hold locks.

    }


    /// Encrypt a block of bytes.
    public void encrypt( byte[] clearText, byte[] cipherText )  {
        encrypt( clearText, 0, cipherText, 0 );
    }

    /// Decrypt a block of bytes.
    public void decrypt( byte[] cipherText, byte[] clearText ) {

        decrypt( cipherText, 0, clearText, 0 );
    }

    /**
     * encrypts an array where the length must be a multiple of 8

	if spaces {
		return "", nil, ErrInvalidEncryptionKeyID
	}
	return strings.TrimPrefix(keyID, ARNPrefix), ctx, nil
}

// IsEncrypted returns true if the object metadata indicates
// that the object was uploaded using SSE-KMS.
func (ssekms) IsEncrypted(metadata map[string]string) bool {
	if _, ok := metadata[MetaSealedKeyKMS]; ok {
		return true
	}
	return false
}

Harshavardhana <******@****.***> 1699046298 -0700

		},
	},
	{ // https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
		Header: http.Header{
			"X-Amz-Meta-X-Amz-Unencrypted-Content-Md5":    []string{"value"},
			"X-Amz-Meta-X-Amz-Unencrypted-Content-Length": []string{"value"},
			"X-Amz-Meta-Test-1":                           []string{"Test-1"},
		},
		ExpectedHeader: http.Header{
			"X-Amz-Meta-Test-1": []string{"Test-1"},

	// downloading is done. Data bytes are from DummyDataGen.
	objectInputs := []ObjectInput{
		// Unencrypted objects
		{"nothing", []int64{0}, nil},
		{"small-1", []int64{509}, nil},

		{"mp-1", []int64{5 * oneMiB, 1}, nil},
		{"mp-2", []int64{5487701, 5487799, 3}, nil},

		// Encrypted object
		{"enc-nothing", []int64{0}, mapCopy(metaWithSSEC)},
		{"enc-small-1", []int64{509}, mapCopy(metaWithSSEC)},

public interface SettingsDecryptionResult {

    /**
     * Gets the decrypted server. This is a convenience method to retrieve the first element from {@link #getServers()}.
     *
     * @return The decrypted server or {@code null}.
     */
    Server getServer();

    /**
     * Gets the decrypted servers.
     *
     * @return The decrypted server, can be empty but never {@code null}.
     */
    List<Server> getServers();

      <match value="%PDF-1." type="string" offset="1:512"/>
      <match value="%PDF-2." type="string" offset="1:512"/>
    </magic>
    <glob pattern="*.pdf"/>
  </mime-type>
  <mime-type type="application/pgp-encrypted">
    <alias type="application/pgp"/>
    <magic>
      <match value="\x85" type="string" offset="0">
        <match value="\x03" type="string" offset="3"/>
      </match>
    </magic>