Examples of Mac

Examples of org.apache.sshd.common.Mac

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        byte[] K = kex.getK();
        byte[] H = kex.getH();
        Digest hash = kex.getHash();
        Cipher s2ccipher;
        Cipher c2scipher;
        Mac s2cmac;
        Mac c2smac;
        Compression s2ccomp;
        Compression c2scomp;

        if (sessionId == null) {
            sessionId = new byte[H.length];
            System.arraycopy(H, 0, sessionId, 0, H.length);
        }

        Buffer buffer = new Buffer();
        buffer.putMPInt(K);
        buffer.putRawBytes(H);
        buffer.putByte((byte) 0x41);
        buffer.putRawBytes(sessionId);
        int pos = buffer.available();
        byte[] buf = buffer.array();
        hash.update(buf, 0, pos);
        IVc2s = hash.digest();

        int j = pos - sessionId.length - 1;

        buf[j]++;
        hash.update(buf, 0, pos);
        IVs2c = hash.digest();

        buf[j]++;
        hash.update(buf, 0, pos);
        Ec2s = hash.digest();

        buf[j]++;
        hash.update(buf, 0, pos);
        Es2c = hash.digest();

        buf[j]++;
        hash.update(buf, 0, pos);
        MACc2s = hash.digest();

        buf[j]++;
        hash.update(buf, 0, pos);
        MACs2c = hash.digest();

        s2ccipher = NamedFactory.Utils.create(factoryManager.getCipherFactories(), negotiated[SshConstants.PROPOSAL_ENC_ALGS_STOC]);
        Es2c = resizeKey(Es2c, s2ccipher.getBlockSize(), hash, K, H);
        s2ccipher.init(isServer ? Cipher.Mode.Encrypt : Cipher.Mode.Decrypt, Es2c, IVs2c);

        s2cmac = NamedFactory.Utils.create(factoryManager.getMacFactories(), negotiated[SshConstants.PROPOSAL_MAC_ALGS_STOC]);
        MACs2c = resizeKey(MACs2c, s2cmac.getBlockSize(), hash, K, H);
        s2cmac.init(MACs2c);

        c2scipher = NamedFactory.Utils.create(factoryManager.getCipherFactories(), negotiated[SshConstants.PROPOSAL_ENC_ALGS_CTOS]);
        Ec2s = resizeKey(Ec2s, c2scipher.getBlockSize(), hash, K, H);
        c2scipher.init(isServer ? Cipher.Mode.Decrypt : Cipher.Mode.Encrypt, Ec2s, IVc2s);

        c2smac = NamedFactory.Utils.create(factoryManager.getMacFactories(), negotiated[SshConstants.PROPOSAL_MAC_ALGS_CTOS]);
        MACc2s = resizeKey(MACc2s, c2smac.getBlockSize(), hash, K, H);
        c2smac.init(MACc2s);

        s2ccomp = NamedFactory.Utils.create(factoryManager.getCompressionFactories(), negotiated[SshConstants.PROPOSAL_COMP_ALGS_STOC]);
        c2scomp = NamedFactory.Utils.create(factoryManager.getCompressionFactories(), negotiated[SshConstants.PROPOSAL_COMP_ALGS_CTOS]);

        if (isServer) {
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Examples of org.bouncycastle.crypto.Mac

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  private String mUser;

  static String getCheckCode(String secret)
      throws Base32String.DecodingException {
    final byte[] keyBytes = Base32String.decode(secret);
    Mac mac = new HMac(new SHA1Digest());
    mac.init(new KeyParameter(keyBytes));
    PasscodeGenerator pcg = new PasscodeGenerator(mac);
    return pcg.generateResponseCode(0L);
  }
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Examples of org.bouncycastle.crypto.Mac

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   *           If the key string is improperly encoded.
   */
  public static String computePin(String secret, Long counter) {
    try {
      final byte[] keyBytes = Base32String.decode(secret);
      Mac mac = new HMac(new SHA1Digest());
      mac.init(new KeyParameter(keyBytes));
      PasscodeGenerator pcg = new PasscodeGenerator(mac);
      if (counter == null) { // time-based totp
        return pcg.generateTimeoutCode();
      } else { // counter-based hotp
        return pcg.generateResponseCode(counter.longValue());
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Examples of org.bouncycastle2.crypto.Mac

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        return out;
    }
   
    private int calculateMac(byte[] data, int dataOff, int dataLen, byte[] macBlock)
    {
        Mac    cMac = new CBCBlockCipherMac(cipher, macSize * 8);

        cMac.init(keyParam);

        //
        // build b0
        //
        byte[] b0 = new byte[16];
   
        if (hasAssociatedText())
        {
            b0[0] |= 0x40;
        }
       
        b0[0] |= (((cMac.getMacSize() - 2) / 2) & 0x7) << 3;

        b0[0] |= ((15 - nonce.length) - 1) & 0x7;
       
        System.arraycopy(nonce, 0, b0, 1, nonce.length);
       
        int q = dataLen;
        int count = 1;
        while (q > 0)
        {
            b0[b0.length - count] = (byte)(q & 0xff);
            q >>>= 8;
            count++;
        }
       
        cMac.update(b0, 0, b0.length);
       
        //
        // process associated text
        //
        if (hasAssociatedText())
        {
            int extra;
           
            if (associatedText.length < ((1 << 16) - (1 << 8)))
            {
                cMac.update((byte)(associatedText.length >> 8));
                cMac.update((byte)associatedText.length);
               
                extra = 2;
            }
            else // can't go any higher than 2^32
            {
                cMac.update((byte)0xff);
                cMac.update((byte)0xfe);
                cMac.update((byte)(associatedText.length >> 24));
                cMac.update((byte)(associatedText.length >> 16));
                cMac.update((byte)(associatedText.length >> 8));
                cMac.update((byte)associatedText.length);
               
                extra = 6;
            }
           
            cMac.update(associatedText, 0, associatedText.length);
           
            extra = (extra + associatedText.length) % 16;
            if (extra != 0)
            {
                for (int i = 0; i != 16 - extra; i++)
                {
                    cMac.update((byte)0x00);
                }
            }
        }
       
        //
        // add the text
        //
        cMac.update(data, dataOff, dataLen);

        return cMac.doFinal(macBlock, 0);
    }
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Examples of org.vngx.jsch.hash.MAC

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   * randomly generated and stored with the host value to hash hosts during
   * matching.
   */
  private void generateHash() throws JSchException {
    // Create random salt for session
    MAC macsha1 = getMAC();
    _salt = new byte[macsha1.getBlockSize()];
    getRandom().fill(_salt, 0, _salt.length);

    try {  // Create the hashed host using salt and MAC-SHA1
      synchronized( macsha1 ) {  // MAC is not thread-safe
        macsha1.init(_salt);
        byte[] hostBytes = Util.str2byte(_host);
        macsha1.update(hostBytes, 0, hostBytes.length);
        _hashedHost = new byte[macsha1.getBlockSize()];
        macsha1.doFinal(_hashedHost, 0);
      }
    } catch(Exception e) {
      throw new JSchException("Failed to create HashedHostKey: " + e, e);
    }

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