Package org.apache.sshd.common

Examples of org.apache.sshd.common.Signature

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        K = dh.getK();

        byte[] K_S;
        KeyPair kp = session.getHostKey();
        String algo = session.getNegociated(SshConstants.PROPOSAL_SERVER_HOST_KEY_ALGS);
        Signature sig = NamedFactory.Utils.create(session.getFactoryManager().getSignatureFactories(), algo);
        sig.init(kp.getPublic(), kp.getPrivate());

        buffer = new Buffer();
        buffer.putRawPublicKey(kp.getPublic());
        K_S = buffer.getCompactData();

        buffer.clear();
        buffer.putString(V_C);
        buffer.putString(V_S);
        buffer.putString(I_C);
        buffer.putString(I_S);
        buffer.putString(K_S);
        buffer.putMPInt(e);
        buffer.putMPInt(f);
        buffer.putMPInt(K);
        sha.update(buffer.array(), 0, buffer.available());
        H = sha.digest();

        byte[] sigH;
        buffer.clear();
        sig.update(H, 0, H.length);
        buffer.putString(algo);
        buffer.putString(sig.sign());
        sigH = buffer.getCompactData();

        if (log.isDebugEnabled()) {
            log.debug("K_S:  {}", BufferUtils.printHex(K_S));
            log.debug("f:    {}", BufferUtils.printHex(f));
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        Pair<KeyPair, String> kp = getKeyPair(keys, key);
        if (kp == null) {
            throw new SshException("Key not found");
        }
        try {
            Signature verif;
            if (kp.getFirst().getPublic() instanceof RSAPublicKey) {
                verif = new SignatureRSA();
            } else {
                verif = new SignatureDSA();
            }
            verif.init(kp.getFirst().getPublic(), kp.getFirst().getPrivate());
            verif.update(data, 0, data.length);
            return verif.sign();
        } catch (IOException e) {
            throw e;
        } catch (Exception e) {
            throw new SshException(e);
        }
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        int len = buffer.getInt();
        buffer.wpos(buffer.rpos() + len);
        PublicKey key = buffer.getRawPublicKey();
        String keyAlg = (key instanceof RSAPublicKey) ? KeyPairProvider.SSH_RSA : KeyPairProvider.SSH_DSS;

        Signature verif = NamedFactory.Utils.create(session.getFactoryManager().getSignatureFactories(), keyAlg);
        verif.init(key, null);
        buffer.wpos(oldLim);

        byte[] sig = hasSig ? buffer.getBytes() : null;

        PublickeyAuthenticator authenticator = session.getServerFactoryManager().getPublickeyAuthenticator();
        if (authenticator == null) {
            throw new Exception("No PublickeyAuthenticator configured");
        }

        if (!authenticator.authenticate(username, key, session)) {
            return false;
        }
        if (!hasSig) {
            Buffer buf = session.createBuffer(SshConstants.Message.SSH_MSG_USERAUTH_PK_OK, 0);
            buf.putString(alg);
            buf.putRawBytes(buffer.array(), oldPos, 4 + len);
            session.writePacket(buf);
            return null;
        } else {
            Buffer buf = new Buffer();
            buf.putString(session.getKex().getH());
            buf.putCommand(SshConstants.Message.SSH_MSG_USERAUTH_REQUEST);
            buf.putString(username);
            buf.putString("ssh-connection");
            buf.putString("publickey");
            buf.putByte((byte) 1);
            buf.putString(keyAlg);
            buffer.rpos(oldPos);
            buffer.wpos(oldPos + 4 + len);
            buf.putBuffer(buffer);
            verif.update(buf.array(), buf.rpos(), buf.available());
            if (!verif.verify(sig)) {
                throw new Exception("Key verification failed");
            }
            return true;
        }
    }
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        int len = buffer.getInt();
        buffer.wpos(buffer.rpos() + len);
        PublicKey key = buffer.getPublicKey();
        String keyAlg = (key instanceof RSAPublicKey) ? KeyPairProvider.SSH_RSA : KeyPairProvider.SSH_DSS;

        Signature verif = NamedFactory.Utils.create(session.getFactoryManager().getSignatureFactories(), keyAlg);
        verif.init(key, null);
        buffer.wpos(oldLim);

        byte[] sig = hasSig ? buffer.getBytes() : null;

        PublickeyAuthenticator authenticator = session.getServerFactoryManager().getPublickeyAuthenticator();
        if (authenticator == null) {
            throw new Exception("No PublickeyAuthenticator configured");
        }

        if (!hasSig) {
            if (authenticator.hasKey(username, key, session)) {
                Buffer buf = session.createBuffer(SshConstants.Message.SSH_MSG_USERAUTH_PK_OK);
                buf.putString(alg);
                buf.putRawBytes(buffer.array(), oldPos, 4 + len);
                session.writePacket(buf);
                return null;
            } else {
                throw new Exception("Unsupported key for user");
            }
        } else {
            if (!authenticator.hasKey(username, key, session)) {
                throw new Exception("Unsupported key for user");
            }
            Buffer buf = new Buffer();
            buf.putString(session.getKex().getH());
            buf.putCommand(SshConstants.Message.SSH_MSG_USERAUTH_REQUEST);
            buf.putString(username);
            buf.putString("ssh-connection");
            buf.putString("publickey");
            buf.putByte((byte) 1);
            buf.putString(keyAlg);
            buffer.rpos(oldPos);
            buffer.wpos(oldPos + 4 + len);
            buf.putBuffer(buffer);
            verif.update(buf.array(), buf.rpos(), buf.available());
            if (verif.verify(sig)) {
                return username;
            } else {
                throw new Exception("Key verification failed");
            }
        }
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        buffer.putMPInt(f);
        buffer.putMPInt(K);
        sha.update(buffer.array(), 0, buffer.available());
        H = sha.digest();

        Signature verif = NamedFactory.Utils.create(session.getFactoryManager().getSignatureFactories(), keyAlg);
        verif.init(key, null);
        verif.update(H, 0, H.length);
        if (!verif.verify(sig)) {
            throw new SshException(SshConstants.SSH2_DISCONNECT_KEY_EXCHANGE_FAILED,
                                   "KeyExchange signature verification failed");
        }
        return true;
    }
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        K = dh.getK();

        byte[] K_S;
        KeyPair kp = session.getHostKey();
        String algo = session.getNegociated(SshConstants.PROPOSAL_SERVER_HOST_KEY_ALGS);
        Signature sig = NamedFactory.Utils.create(session.getFactoryManager().getSignatureFactories(), algo);
        sig.init(kp.getPublic(), kp.getPrivate());

        buffer = new Buffer();
        buffer.putPublicKey(kp.getPublic());
        K_S = buffer.getCompactData();

        buffer.clear();
        buffer.putString(V_C);
        buffer.putString(V_S);
        buffer.putString(I_C);
        buffer.putString(I_S);
        buffer.putString(K_S);
        buffer.putMPInt(e);
        buffer.putMPInt(f);
        buffer.putMPInt(K);
        sha.update(buffer.array(), 0, buffer.available());
        H = sha.digest();

        byte[] sigH;
        buffer.clear();
        sig.update(H, 0, H.length);
        buffer.putString(algo);
        buffer.putString(sig.sign());
        sigH = buffer.getCompactData();

        if (log.isDebugEnabled()) {
            log.debug("K_S:  {}", BufferUtils.printHex(K_S));
            log.debug("f:    {}", BufferUtils.printHex(f));
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            buffer.putByte((byte) 1);
            buffer.putString((key.getPublic() instanceof RSAPublicKey) ? KeyPairProvider.SSH_RSA : KeyPairProvider.SSH_DSS);
            int pos2 = buffer.wpos();
            buffer.putPublicKey(key.getPublic());

            Signature verif = NamedFactory.Utils.create(session.getFactoryManager().getSignatureFactories(), (key.getPublic() instanceof RSAPublicKey) ? KeyPairProvider.SSH_RSA : KeyPairProvider.SSH_DSS);
            verif.init(key.getPublic(), key.getPrivate());

            Buffer bs = new Buffer();
            bs.putString(session.getKex().getH());
            bs.putCommand(SshConstants.Message.SSH_MSG_USERAUTH_REQUEST);
            bs.putString(username);
            bs.putString("ssh-connection");
            bs.putString("publickey");
            bs.putByte((byte) 1);
            bs.putString((key.getPublic() instanceof RSAPublicKey) ? KeyPairProvider.SSH_RSA : KeyPairProvider.SSH_DSS);
            bs.putPublicKey(key.getPublic());
            verif.update(bs.array(), bs.rpos(), bs.available());

            bs = new Buffer();
            bs.putString((key.getPublic() instanceof RSAPublicKey) ? KeyPairProvider.SSH_RSA : KeyPairProvider.SSH_DSS);
            bs.putBytes(verif.sign());
            buffer.putBytes(bs.array(), bs.rpos(), bs.available());

            session.writePacket(buffer);
        } catch (IOException e) {
            throw e;
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Related Classes of org.apache.sshd.common.Signature

  • org.apache.sshd.agent.AgentLocal
  • org.apache.sshd.agent.local.AgentImpl
  • org.apache.sshd.client.auth.deprecated.UserAuthPublicKey
  • org.apache.sshd.client.auth.UserAuthPublicKey
  • org.apache.sshd.client.auth.UserAuthPublicKey$KeyPairIdentity
  • org.apache.sshd.client.kex.AbstractDHGClient
  • org.apache.sshd.client.kex.DHGEX
  • org.apache.sshd.server.auth.UserAuthPublicKey
  • org.apache.sshd.server.kex.AbstractDHGServer
  • org.apache.sshd.server.kex.DHGEX
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