Package org.apache.sshd.common

Examples of org.apache.sshd.common.Cipher

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        avail.add(new AES256CBC.Factory());

        for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) {
            final NamedFactory<Cipher> f = i.next();
            try {
                final Cipher c = f.create();
                final byte[] key = new byte[c.getBlockSize()];
                final byte[] iv = new byte[c.getIVSize()];
                c.init(Cipher.Mode.Encrypt, key, iv);
            } catch (InvalidKeyException e) {
                i.remove();
            } catch (Exception e) {
                i.remove();
            }
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        avail.add(new AES256CBC.Factory());

        for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) {
            final NamedFactory<Cipher> f = i.next();
            try {
                final Cipher c = f.create();
                final byte[] key = new byte[c.getBlockSize()];
                final byte[] iv = new byte[c.getIVSize()];
                c.init(Cipher.Mode.Encrypt, key, iv);
            } catch (InvalidKeyException e) {
                i.remove();
            } catch (Exception e) {
                i.remove();
            }
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        byte[] MACc2s;
        byte[] MACs2c;
        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(), negociated[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(), negociated[SshConstants.PROPOSAL_MAC_ALGS_STOC]);
        s2cmac.init(MACs2c);

        c2scipher = NamedFactory.Utils.create(factoryManager.getCipherFactories(), negociated[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(), negociated[SshConstants.PROPOSAL_MAC_ALGS_CTOS]);
        c2smac.init(MACc2s);

        s2ccomp = NamedFactory.Utils.create(factoryManager.getCompressionFactories(), negociated[SshConstants.PROPOSAL_COMP_ALGS_STOC]);
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    a.add(new AES256CBC.Factory());

    for (Iterator<NamedFactory<Cipher>> i = a.iterator(); i.hasNext();) {
      final NamedFactory<Cipher> f = i.next();
      try {
        final Cipher c = f.create();
        final byte[] key = new byte[c.getBlockSize()];
        final byte[] iv = new byte[c.getIVSize()];
        c.init(Cipher.Mode.Encrypt, key, iv);
      } catch (InvalidKeyException e) {
        log.warn("Disabling cipher " + f.getName() + ": " + e.getMessage()
            + "; try installing unlimited cryptography extension");
        i.remove();
      } catch (Exception e) {
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        byte[] MACc2s;
        byte[] MACs2c;
        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(), negociated[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(), negociated[SshConstants.PROPOSAL_MAC_ALGS_STOC]);
        s2cmac.init(MACs2c);

        c2scipher = NamedFactory.Utils.create(factoryManager.getCipherFactories(), negociated[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(), negociated[SshConstants.PROPOSAL_MAC_ALGS_CTOS]);
        c2smac.init(MACc2s);

        s2ccomp = NamedFactory.Utils.create(factoryManager.getCompressionFactories(), negociated[SshConstants.PROPOSAL_COMP_ALGS_STOC]);
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        avail.add(new AES256CBC.Factory());

        for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) {
            final NamedFactory<Cipher> f = i.next();
            try {
                final Cipher c = f.create();
                final byte[] key = new byte[c.getBlockSize()];
                final byte[] iv = new byte[c.getIVSize()];
                c.init(Cipher.Mode.Encrypt, key, iv);
            } catch (InvalidKeyException e) {
                i.remove();
            } catch (Exception e) {
                i.remove();
            }
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        avail.add(new AES256CBC.Factory());

        for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) {
            final NamedFactory<Cipher> f = i.next();
            try {
                final Cipher c = f.create();
                final byte[] key = new byte[c.getBlockSize()];
                final byte[] iv = new byte[c.getIVSize()];
                c.init(Cipher.Mode.Encrypt, key, iv);
            } catch (InvalidKeyException e) {
                i.remove();
            } catch (Exception e) {
                i.remove();
            }
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Related Classes of org.apache.sshd.common.Cipher

  • com.google.gerrit.sshd.SshDaemon
  • org.apache.karaf.shell.ssh.SshUtils
  • org.apache.sshd.CipherTest
  • org.apache.sshd.common.session.AbstractSession
  • org.apache.sshd.MacTest
  • org.apache.sshd.SshClient
  • org.apache.sshd.SshServer
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