nameBuilder.append('/');
                    }
                }
                this.serverPrincipalName = nameBuilder.toString();
                break;
            case 3:// Encrypted part
                ASN1Sequence encSequence = ASN1Util.as(ASN1Sequence.class, tagged);
                ASN1Integer encType = ASN1Util.as(ASN1Integer.class, ASN1Util.as(ASN1TaggedObject.class, encSequence, 0));

        serverData.sessKey = 0x12345678;
        serverData.scapabilities = 0x8000F3FD; // Various capabilities
        serverData.oemDomainName = "WORKGROUP";
        serverData.securityMode = 0x0F; // User + encrypt passwords + signatures
        serverData.security = 1; // User level
        serverData.encryptedPasswords = true;
        serverData.signaturesEnabled = true;
        serverData.signaturesRequired = false;

        .toSet()

    // It's safe to assume all platforms will have a major Internet certificate issuer.
    val majorIssuers =
      listOf(
        "DigiCert",
        "Let's Encrypt",
        "ISRG", // Internet Security Research Group (Let's Encrypt parent)
        "GlobalSign",
        "Comodo",
        "Sectigo",
        "GeoTrust",
        "Entrust",
      )
    assertThat(names).matchesPredicate { strings ->

import jcifs.smb1.Config;
import jcifs.smb1.util.DES;
import jcifs.smb1.util.Encdec;
import jcifs.smb1.util.HMACT64;
import jcifs.smb1.util.LogStream;
import jcifs.smb1.util.MD4;

/**
 * This class stores and encrypts NTLM user credentials. The default
 * credentials are retrieved from the {@code jcifs.smb1.smb1.client.domain},
 * {@code jcifs.smb1.smb1.client.username}, and {@code jcifs.smb1.smb1.client.password}
 * properties.
 * <p>

TLS Termination Proxyとして使えるオプションには、以下のようなものがあります：

* Traefik（証明書の更新も対応）
* Caddy (証明書の更新も対応)
* Nginx
* HAProxy


## Let's Encrypt { #lets-encrypt }

Let's Encrypt以前は、これらの**HTTPS証明書**は信頼できる第三者によって販売されていました。

これらの証明書を取得するための手続きは面倒で、かなりの書類を必要とし、証明書はかなり高価なものでした。

しかしその後、**[Let's Encrypt](https://letsencrypt.org/)** が作られました。

            EncryptionNegotiateContext encryption = new EncryptionNegotiateContext();

            assertNotEquals(preauth.getContextType(), encryption.getContextType());
            assertEquals(0x1, preauth.getContextType());
            assertEquals(0x2, encryption.getContextType());
        }

        @Test

    /** Authorization data type: Relevant */
    int AUTH_DATA_RELEVANT = 1;
    /** Authorization data type: PAC */
    int AUTH_DATA_PAC = 128;

    /** DES encryption type identifier */
    int DES_ENC_TYPE = 3;
    /** RC4 encryption type identifier */
    int RC4_ENC_TYPE = 23;
    /** RC4 algorithm name */
    String RC4_ALGORITHM = "ARCFOUR";
    /** HMAC algorithm name */
    String HMAC_ALGORITHM = "HmacMD5";

     *
     */
    private static final long serialVersionUID = -6350312430383107348L;

    /**
     * Constructs a CIFS unsupported crypto exception with no detail message.
     */
    public CIFSUnsupportedCryptoException() {
    }

    /**
     * Constructs a CIFS unsupported crypto exception with the specified detail message and cause.
     *
     * @param message the detail message

        // Then
        assertEquals(52, headerSize); // SMB2 Transform Header is 52 bytes
    }

    // Note: SMB2 Transform Header doesn't have a protocol ID field
    // The protocol ID is part of the encrypted SMB2 message, not the transform header

    @Test
    @DisplayName("Should set and get signature")
    void testSignature() {
        // Given
        byte[] signature = new byte[16];

        assertFalse(session.isConnected());
        assertTrue(session.isFailed());
    }

    @Test
    @DisplayName("encryption: flags, encryption, and decryption delegation")
    void testEncryptionDelegation() throws Exception {
        SmbSessionImpl session = newSession();

        // No encryption context -> throws
        CIFSException notEnabled = assertThrows(CIFSException.class, () -> session.encryptMessage(new byte[] { 1 }));