Пример #1
0
 private HASH genHash()
 {
     try
     {
         Type t = Type.GetType(m_jsch.getConfig("md5"));
         m_hash = (HASH)Activator.CreateInstance(t);
         m_hash.init();
     }
     catch//(Exception e)
     {
     }
     return m_hash;
 }
Пример #2
0
 public string getFingerPrint()
 {
     if (m_hash == null) m_hash = genHash();
     byte[] kblob = getPublicKeyBlob();
     if (kblob == null) return null;
     return getKeySize() + " " + Util.getFingerPrint(m_hash, kblob);
 }
Пример #3
0
        internal byte[] genKey(byte[] passphrase, byte[] iv)
        {
            if (m_cipher == null) m_cipher = genCipher();
            if (m_hash == null) m_hash = genHash();

            byte[] key = new byte[m_cipher.BlockSize];
            int hsize = m_hash.BlockSize;
            byte[] hn = new byte[key.Length / hsize * hsize +
                (key.Length % hsize == 0 ? 0 : hsize)];
            try
            {
                byte[] tmp = null;
                if (vendor == VENDOR_OPENSSH)
                {
                    for (int index = 0; index + hsize <= hn.Length;)
                    {
                        if (tmp != null) { m_hash.update(tmp, 0, tmp.Length); }
                        m_hash.update(passphrase, 0, passphrase.Length);
                        m_hash.update(iv, 0, iv.Length);
                        tmp = m_hash.digest();
                        Array.Copy(tmp, 0, hn, index, tmp.Length);
                        index += tmp.Length;
                    }
                    Array.Copy(hn, 0, key, 0, key.Length);
                }
                else if (vendor == VENDOR_FSECURE)
                {
                    for (int index = 0; index + hsize <= hn.Length;)
                    {
                        if (tmp != null) { m_hash.update(tmp, 0, tmp.Length); }
                        m_hash.update(passphrase, 0, passphrase.Length);
                        tmp = m_hash.digest();
                        Array.Copy(tmp, 0, hn, index, tmp.Length);
                        index += tmp.Length;
                    }
                    Array.Copy(hn, 0, key, 0, key.Length);
                }
            }
            catch (Exception) { }
            return key;
        }
Пример #4
0
        internal IdentityFile(string identity, JSch jsch)
        {
            m_identity = identity;
            m_jsch = jsch;
            try
            {
                Type c = Type.GetType(jsch.getConfig("3des-cbc"));
                m_cipher = (Cipher)Activator.CreateInstance(c);
                m_key = new byte[m_cipher.BlockSize];   // 24
                m_iv = new byte[m_cipher.IVSize];       // 8
                c = Type.GetType(jsch.getConfig("md5"));
                m_hash = (HASH)(Activator.CreateInstance(c));
                m_hash.init();
                FileInfo file = new FileInfo(identity);
                FileStream fis = File.OpenRead(identity);
                byte[] buf = new byte[(int)(file.Length)];
                int len = fis.Read(buf, 0, buf.Length);
                fis.Close();

                int i = 0;
                while (i < len)
                {
                    if (buf[i] == 'B' && buf[i + 1] == 'E' && buf[i + 2] == 'G' && buf[i + 3] == 'I')
                    {
                        i += 6;
                        if (buf[i] == 'D' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
                            m_type = DSS;
                        else if (buf[i] == 'R' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
                            m_type = RSA;
                        else if (buf[i] == 'S' && buf[i + 1] == 'S' && buf[i + 2] == 'H')
                        {   // FSecure
                            m_type = UNKNOWN;
                            m_keytype = FSECURE;
                        }
                        else
                            throw new JSchException("invaid privatekey: " + identity);

                        i += 3;
                        continue;
                    }
                    if (buf[i] == 'C' && buf[i + 1] == 'B' && buf[i + 2] == 'C' && buf[i + 3] == ',')
                    {
                        i += 4;
                        for (int ii = 0; ii < m_iv.Length; ii++)
                            m_iv[ii] = (byte)(((a2b(buf[i++]) << 4) & 0xf0) + (a2b(buf[i++]) & 0xf));
                        continue;
                    }
                    if (buf[i] == '\r'
                    && i + 1 < buf.Length && buf[i + 1] == '\n'
                        )
                    {
                        i++;
                        continue;
                    }
                    if (buf[i] == 0x0a && i + 1 < buf.Length)
                    {
                        if (buf[i + 1] == '\n')
                        {
                            i += 2;
                            break;
                        }
                        if (buf[i + 1] == '\r'
                        && i + 2 < buf.Length
                        && buf[i + 2] == '\n'
                            )
                        {
                            i += 3; break;
                        }
                        bool inheader = false;
                        for (int j = i + 1; j < buf.Length; j++)
                        {
                            if (buf[j] == 0x0a) break;
                            //if(buf[j]==0x0d) break;
                            if (buf[j] == ':') { inheader = true; break; }
                        }
                        if (!inheader)
                        {
                            i++;
                            m_encrypted = false;    // no passphrase
                            break;
                        }
                    }
                    i++;
                }

                if (m_type == ERROR)
                    throw new JSchException("invaid privatekey: " + identity);

                int start = i;
                while (i < len)
                {
                    if (buf[i] == 0x0a)
                    {
                        bool xd = (buf[i - 1] == 0x0d);
                        Array.Copy(buf, i + 1,
                            buf,
                            i - (xd ? 1 : 0),
                            len - i - 1 - (xd ? 1 : 0)
                            );
                        if (xd)
                            len--;
                        len--;
                        continue;
                    }
                    if (buf[i] == '-')
                        break;
                    i++;
                }
                m_encoded_data = Util.fromBase64(buf, start, i - start);

                if (m_encoded_data.Length > 4 &&            // FSecure
                    m_encoded_data[0] == (byte)0x3f &&
                    m_encoded_data[1] == (byte)0x6f &&
                    m_encoded_data[2] == (byte)0xf9 &&
                    m_encoded_data[3] == (byte)0xeb)
                {
                    Buffer _buf = new Buffer(m_encoded_data);
                    _buf.getInt();  // 0x3f6ff9be
                    _buf.getInt();
                    byte[] _type = _buf.getString();
                    byte[] _cipher = _buf.getString();
                    string s_cipher = System.Text.Encoding.Default.GetString(_cipher);
                    if (s_cipher.Equals("3des-cbc"))
                    {
                        _buf.getInt();
                        byte[] foo = new byte[m_encoded_data.Length - _buf.OffSet];
                        _buf.getByte(foo);
                        m_encoded_data = foo;
                        m_encrypted = true;
                        throw new JSchException("unknown privatekey format: " + identity);
                    }
                    else if (s_cipher.Equals("none"))
                    {
                        _buf.getInt();
                        m_encrypted = false;
                        byte[] foo = new byte[m_encoded_data.Length - _buf.OffSet];
                        _buf.getByte(foo);
                        m_encoded_data = foo;
                    }
                }

                try
                {
                    file = new FileInfo(identity + ".pub");
                    fis = File.OpenRead(identity + ".pub");
                    buf = new byte[(int)(file.Length)];
                    len = fis.Read(buf, 0, buf.Length);
                    fis.Close();
                }
                catch
                {
                    return;
                }

                if (buf.Length > 4 &&             // FSecure's public key
                    buf[0] == '-' && buf[1] == '-' && buf[2] == '-' && buf[3] == '-'
                    )
                {
                    i = 0;
                    do
                    {
                        i++;
                    } while (buf.Length > i && buf[i] != 0x0a);
                    if (buf.Length <= i)
                        return;

                    while (true)
                    {
                        if (buf[i] == 0x0a)
                        {
                            bool inheader = false;
                            for (int j = i + 1; j < buf.Length; j++)
                            {
                                if (buf[j] == 0x0a)
                                    break;
                                if (buf[j] == ':')
                                {
                                    inheader = true;
                                    break;
                                }
                            }
                            if (!inheader)
                            {
                                i++;
                                break;
                            }
                        }
                        i++;
                    }
                    if (buf.Length <= i)
                        return;

                    start = i;
                    while (i < len)
                    {
                        if (buf[i] == 0x0a)
                        {
                            Array.Copy(buf, i + 1, buf, i, len - i - 1);
                            len--;
                            continue;
                        }
                        if (buf[i] == '-') { break; }
                        i++;
                    }
                    m_publickeyblob = Util.fromBase64(buf, start, i - start);

                    if (m_type == UNKNOWN)
                    {
                        if (m_publickeyblob[8] == 'd')
                            m_type = DSS;
                        else if (m_publickeyblob[8] == 'r')
                            m_type = RSA;
                    }
                }
                else
                {
                    if (buf[0] != 's' || buf[1] != 's' || buf[2] != 'h' || buf[3] != '-')
                        return;
                    i = 0;
                    while (i < len)
                    {
                        if (buf[i] == ' ')
                            break;
                        i++;
                    }
                    i++;
                    if (i >= len)
                        return;
                    start = i;
                    while (i < len)
                    {
                        if (buf[i] == ' ')
                            break;
                        i++;
                    }
                    m_publickeyblob = Util.fromBase64(buf, start, i - start);
                }

            }
            catch (Exception e)
            {
                if (e is JSchException)
                    throw (JSchException)e;
                throw new JSchException(e.ToString());
            }
        }