public static final int DELETE = 0x00010000; // 16
    /** Permission to read the security descriptor */
    public static final int READ_CONTROL = 0x00020000; // 17
    /** Permission to write the discretionary access control list */
    public static final int WRITE_DAC = 0x00040000; // 18
    /** Permission to change the owner in the security descriptor */
    public static final int WRITE_OWNER = 0x00080000; // 19

### Security and authentication { #security-and-authentication }

Security and authentication integrated. Without any compromise with databases or data models.

All the security schemes defined in OpenAPI, including:

* HTTP Basic.
* **OAuth2** (also with **JWT tokens**). Check the tutorial on [OAuth2 with JWT](tutorial/security/oauth2-jwt.md){.internal-link target=_blank}.
* API keys in:

        final int negotiateContextOffset = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // Validate security buffer parameters
        if (securityBufferLength < 0 || securityBufferLength > 65536) { // 64KB max for security buffer
            throw new SMBProtocolDecodingException("Invalid security buffer length: " + securityBufferLength + " (must be 0-65536)");
        }
        if (securityBufferOffset < 0) {

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2;

import java.nio.ByteBuffer;
import java.security.GeneralSecurityException;
import java.security.SecureRandom;
import java.util.Arrays;
import java.util.concurrent.atomic.AtomicLong;

import javax.crypto.Cipher;
import javax.crypto.spec.GCMParameterSpec;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.platform

import java.security.KeyStore
import java.security.Provider
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.TrustManagerFactory
import javax.net.ssl.X509TrustManager

        // Channel
        assertEquals(0, SMBUtil.readInt4(buffer, bodyOffset + 8));

        // Security Buffer Offset
        int securityBufferOffset = SMBUtil.readInt2(buffer, bodyOffset + 12);
        assertTrue(securityBufferOffset > 0);

        // Security Buffer Length
        assertEquals(token.length, SMBUtil.readInt2(buffer, bodyOffset + 14));

        // Previous Session ID

    /**
     * Constructs a PAC group entry.
     * @param id the group's Security Identifier (SID)
     * @param attributes the group membership attributes
     */
    public PacGroup(final SID id, final int attributes) {
        this.id = id;
        this.attributes = attributes;
    }

    /**
     * Returns the group's Security Identifier.
     * @return the group SID
     */
    public SID getId() {

        return ("SmbComNegotiateResponse[" + super.toString() + ",wordCount=" + wordCount + ",dialectIndex=" + dialectIndex
                + ",securityMode=0x" + Hexdump.toHexString(server.securityMode, 1) + ",security="
                + (server.security == SECURITY_SHARE ? "share" : "user") + ",encryptedPasswords=" + server.encryptedPasswords

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3

import java.io.IOException
import java.security.Security
import okhttp3.internal.platform.Platform
import org.conscrypt.Conscrypt

// TLS 1.3
private val TLS13_CIPHER_SUITES =
  listOf(
    CipherSuite.TLS_AES_128_GCM_SHA256,
    CipherSuite.TLS_AES_256_GCM_SHA384,

     */
    @Size(max = 1000)
    public String ldapProviderUrl;

    /**
     * LDAP security principal for binding to the LDAP server.
     * Used for authenticating with the LDAP server.
     */
    @Size(max = 1000)
    public String ldapSecurityPrincipal;

    /**
     * LDAP admin security principal for administrative operations.
     * Used for admin-level operations on the LDAP server.
     */