case HMAC_SHA1_96_AES128:
            case HMAC_SHA1_96_AES256:
                this.checksum = new byte[12];
                break;
            default:
                this.checksum = new byte[bufferStream.available()];
                break;
            }
            bufferStream.readFully(this.checksum);
        }
        catch ( IOException e ) {

public interface PacConstants {

    static final int PAC_VERSION = 0;

    static final int LOGON_INFO = 1;
    static final int CREDENTIAL_TYPE = 2;
    static final int SERVER_CHECKSUM = 6;
    static final int PRIVSVR_CHECKSUM = 7;

    static final int CLIENT_NAME_TYPE = 0xA;
    static final int CONSTRAINT_DELEGATIION_TYPE = 0xB;
    static final int CLIENT_UPN_TYPE = 0xC;
    static final int CLIENT_CLAIMS_TYPE = 0xD;

    static final int RC4_ENC_TYPE = 23;
    static final String RC4_ALGORITHM = "ARCFOUR";
    static final String HMAC_ALGORITHM = "HmacMD5";
    static final int CONFOUNDER_SIZE = 8;
    static final int CHECKSUM_SIZE = 16;

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2
      with:
        # We must fetch at least the immediate parents so that if this is
        # a pull request then we can checkout the head.
        fetch-depth: 2

    # If this run was triggered by a pull request event, then checkout
    # the head of the pull request instead of the merge commit.

name: Java CI with Maven

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Set up JDK 11
      uses: actions/setup-java@v2
      with:
        java-version: '11'
        distribution: 'temurin'
    - name: Build with Maven

        int plainDataLength = data.length - KerberosConstants.CHECKSUM_SIZE;
        byte[] plainData = cipher.doFinal(data, KerberosConstants.CHECKSUM_SIZE, plainDataLength);

        byte[] plainDataChecksum = getHmac(plainData, codeHmac);
        if ( plainDataChecksum.length >= KerberosConstants.CHECKSUM_SIZE )
            for ( int i = 0; i < KerberosConstants.CHECKSUM_SIZE; i++ )
                if ( plainDataChecksum[ i ] != data[ i ] )

            (byte) 0x99
        };

        byte[] output = new byte[12];
        byte[] dk = deriveKeyAES(baseKey, cst); // Checksum key
        try {
            Mac m = Mac.getInstance("HmacSHA1");
            m.init(new SecretKeySpec(dk, HMAC_KEY));
            System.arraycopy(m.doFinal(input), 0, output, 0, 12);
            return output;

            }
        }

        byte[] sig = new byte[16];
        SMBUtil.writeInt4(1, sig, 0); // version
        System.arraycopy(trunc, 0, sig, 4, 8); // checksum
        SMBUtil.writeInt4(seqNum, sig, 12); // seqNum

        return sig;
    }


    @Override
    public void verifyMIC ( byte[] data, byte[] mic ) throws CIFSException {

                        }
                        // Clear signature from checksum copy
                        for ( int i = 0; i < this.serverSignature.getChecksum().length; i++ )
                            checksumData[ (int) bufferOffset + 4 + i ] = 0;
                    }
                    break;
                case PacConstants.PRIVSVR_CHECKSUM:
                    // PAC KDC Signature