func (e Error) Error() string {
	if e.msg == "" {
		return "crypto: cause <nil>"
	}
	return e.msg
}

var (
	// ErrInvalidEncryptionMethod indicates that the specified SSE encryption method
	// is not supported.
	ErrInvalidEncryptionMethod = Errorf("The encryption method is not supported")

	// ErrInvalidCustomerAlgorithm indicates that the specified SSE-C algorithm
	// is not supported.

    }

    /**
     * Encrypt a message using the session's encryption context
     *
     * @param message the message to encrypt
     * @return encrypted message with transform header
     * @throws CIFSException if encryption fails or is not enabled
     */
    public byte[] encryptMessage(byte[] message) throws CIFSException {
        if (this.encryptionContext == null) {

- Configurable: Min/max versions can be set via configuration properties

### SMB3 Encryption Support
- **SMB2 Transform Header**: Encrypted message wrapping
- **AES-CCM/GCM Support**: Both AES-128-CCM (SMB 3.0/3.0.2) and AES-128-GCM (SMB 3.1.1) cipher suites
- **Encryption Context**: Per-session encryption state management
- **Key Derivation**: SMB3 KDF implementation with dialect-specific parameters

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

  ) {
    enum class Type {
      Handshake,
      Plaintext,
      Encrypted,
      Setup,
      Unknown,
    }

    val type: Type
      get() =
        when {
          message == "adding as trusted certificates" -> Type.Setup
          message == "Raw read" || message == "Raw write" -> Type.Encrypted
          message == "Plaintext before ENCRYPTION" || message == "Plaintext after DECRYPTION" -> Type.Plaintext

    /**
     * Server's time zone offset in minutes from UTC.
     */
    public int serverTimeZone;
    /**
     * Length of the encryption key.
     */
    public int encryptionKeyLength;
    /**
     * Encryption key for password encryption.
     */
    public byte[] encryptionKey;
    /**
     * Server's globally unique identifier.
     */
    public byte[] guid;

            final byte t = s[i];
            s[i] = s[j];
            s[j] = t;
        }

        i = j = 0;
    }

    /**
     * Encrypts or decrypts data using the RC4 stream cipher.
     * Since RC4 is a stream cipher, the same operation is used for both encryption and decryption.
     *
     * @param src the source data array
     * @param soff the offset in the source array
     * @param slen the length of data to process

// BucketSSEConfig - represents default bucket encryption configuration
type BucketSSEConfig struct {
	XMLNS   string   `xml:"xmlns,attr,omitempty"`
	XMLName xml.Name `xml:"ServerSideEncryptionConfiguration"`
	Rules   []Rule   `xml:"Rule"`
}

// ParseBucketSSEConfig - Decodes given XML to a valid default bucket encryption config
func ParseBucketSSEConfig(r io.Reader) (*BucketSSEConfig, error) {

	// Use the maximum parity (N/2), used when saving server configuration files
	MaxParity bool

	// Provides a per object encryption function, allowing metadata encryption.
	EncryptFn objectMetaEncryptFn

	// SkipDecommissioned set to 'true' if the call requires skipping the pool being decommissioned.
	// mainly set for certain WRITE operations.
	SkipDecommissioned bool

 */
package jcifs.smb;

import java.security.GeneralSecurityException;
import java.security.MessageDigest;

import javax.crypto.Cipher;
import javax.crypto.ShortBufferException;

import jcifs.CIFSContext;
import jcifs.util.Crypto;
import jcifs.util.Encdec;
import jcifs.util.Strings;

/**
 * Internal use only
 *
 * @author mbechler
 *