* @param sessionKey
     * @param label
     * @param context
     */
    private static byte[] derive(final byte[] sessionKey, final byte[] label, final byte[] context) {
        final KDFCounterBytesGenerator gen = new KDFCounterBytesGenerator(new HMac(new SHA256Digest()));

        final int r = 32;
        final byte[] suffix = new byte[label.length + context.length + 5];
        // per bouncycastle

    assertThat(converter.convert("1")).isEqualTo(1);
    assertThat(converter.convert("0")).isEqualTo(0);
    assertThat(converter.convert("-1")).isEqualTo(-1);
    assertThat(converter.convert("0xff")).isEqualTo(255);
    assertThat(converter.convert("0xFF")).isEqualTo(255);
    assertThat(converter.convert("-0xFF")).isEqualTo(-255);
    assertThat(converter.convert("#0000FF")).isEqualTo(255);

    private final CIFSContext context;
    private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();

    private volatile boolean shutdown = false;

    /**
     * Create a new persistent handle manager
     * @param context the CIFS context
     */
    public PersistentHandleManager(CIFSContext context) {
        this.context = context;
        this.handles = new ConcurrentHashMap<>();

			if err != nil {
				return err
			}
		}

		// If the context does not contain the bucket key
		// we must add it for key generation. However,
		// the context must be stored exactly like the
		// client provided it. Therefore, we create a copy
		// of the client provided context and add the bucket
		// key, if not present.
		kmsCtx := kms.Context{}
		maps.Copy(kmsCtx, cryptoCtx)
		if _, ok := kmsCtx[bucket]; !ok {

### Async Context Manager { #async-context-manager }

Si revisas, la función está decorada con un `@asynccontextmanager`.

Eso convierte a la función en algo llamado un "**async context manager**".

{* ../../docs_src/events/tutorial003_py39.py hl[1,13] *}

	"github.com/minio/minio/internal/config/identity/openid"
	"github.com/minio/mux"
	"github.com/minio/pkg/v3/ldap"
	"github.com/minio/pkg/v3/policy"
)

func addOrUpdateIDPHandler(ctx context.Context, w http.ResponseWriter, r *http.Request, isUpdate bool) {
	objectAPI, cred := validateAdminReq(ctx, w, r, policy.ConfigUpdateAdminAction)
	if objectAPI == nil {
		return
	}

// slice of FileInfo.
func pickValidFileInfo(ctx context.Context, metaArr []FileInfo, modTime time.Time, etag string, quorum int) (FileInfo, error) {
	return findFileInfoInQuorum(ctx, metaArr, modTime, etag, quorum)
}

func writeAllMetadataWithRevert(ctx context.Context, disks []StorageAPI, origbucket, bucket, prefix string, files []FileInfo, quorum int, revert bool) ([]StorageAPI, error) {

        // Then
        assertTrue(bytesWritten > 36);

        // Verify negotiate context count
        assertEquals(2, SMBUtil.readInt2(buffer, 32));

        // Verify negotiate context offset is set
        int contextOffset = SMBUtil.readInt4(buffer, 28);
        assertTrue(contextOffset > 0);

        // Skip detailed context verification since we can't access headerStart
        // Just verify that contexts were written

import jcifs.Encodable;

/**
 * SMB2 Negotiate Context request data structure.
 *
 * This class represents negotiate contexts used in SMB 3.1.1
 * for capability negotiation and security enhancements.
 *
 * @author mbechler
 */
public interface NegotiateContextRequest extends Encodable {

    /**
     * Gets the negotiate context type.
     *
     * @return the SMB2 negotiate context type
     */
    int getContextType();

		user2 = *GetUser("transaction-nested-2", Config{})
	)

	if err := transaction(context.Background(), DB, func(ctx context.Context, tx *gorm.DB) error {
		tx.Create(&user)

		if err := tx.First(&User{}, "name = ?", user.Name).Error; err != nil {
			t.Fatalf("Should find saved record")
		}

		if err := transaction(ctx, tx, func(ctx context.Context, tx1 *gorm.DB) error {
			tx1.Create(&user1)