/SharpSSH/jsch/IdentityFile.cs
C# | 1064 lines | 842 code | 64 blank | 158 comment | 253 complexity | 7f9d919629feeaaeb6b57b2d5f645645 MD5 | raw file
Possible License(s): BSD-3-Clause
- using System;
- using System.IO;
- using System.Text;
-
- namespace Tamir.SharpSsh.jsch
- {
- /* -*-mode:java; c-basic-offset:2; -*- */
- /*
- Copyright (c) 2002,2003,2004 ymnk, JCraft,Inc. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the distribution.
-
- 3. The names of the authors may not be used to endorse or promote products
- derived from this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
- INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- internal class IdentityFile : Identity
- {
- private String identity;
- private byte[] key;
- private byte[] iv;
- private JSch jsch;
- private HASH hash;
- private byte[] encoded_data;
-
- private Cipher cipher;
-
- // DSA
- private byte[] P_array;
- private byte[] Q_array;
- private byte[] G_array;
- private byte[] pub_array;
- private byte[] prv_array;
-
- // RSA
- private byte[] n_array; // modulus
- private byte[] e_array; // public exponent
- private byte[] d_array; // private exponent
-
- private byte[] p_array;
- private byte[] q_array;
- private byte[] dmp1_array;
- private byte[] dmq1_array;
- private byte[] iqmp_array;
-
- // private String algname="ssh-dss";
- private String algname = "ssh-rsa";
-
- private const int ERROR = 0;
- private const int RSA = 1;
- private const int DSS = 2;
- internal const int UNKNOWN = 3;
-
- private const int OPENSSH = 0;
- private const int FSECURE = 1;
- private const int PUTTY = 2;
-
- private int type = ERROR;
- private int keytype = OPENSSH;
-
- private byte[] publickeyblob = null;
-
- private bool encrypted = true;
-
- internal IdentityFile(String identity, JSch jsch)
- {
- this.identity = identity;
- this.jsch = jsch;
- try
- {
- Type c = Type.GetType(jsch.getConfig("3des-cbc"));
- cipher = (Cipher) Activator.CreateInstance(c);
- key = new byte[cipher.getBlockSize()]; // 24
- iv = new byte[cipher.getIVSize()]; // 8
- c = Type.GetType(jsch.getConfig("md5"));
- hash = (HASH) (Activator.CreateInstance(c));
- 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')
- {
- type = DSS;
- }
- else if (buf[i] == 'R' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
- {
- type = RSA;
- }
- else if (buf[i] == 'S' && buf[i + 1] == 'S' && buf[i + 2] == 'H')
- {
- // FSecure
- type = UNKNOWN;
- keytype = FSECURE;
- }
- else
- {
- //System.out.println("invalid format: "+identity);
- 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 < iv.Length; ii++)
- {
- iv[ii] = (byte) (((a2b(buf[i++]) << 4) & 0xf0) +
- (a2b(buf[i++]) & 0xf));
- }
- continue;
- }
- if (buf[i] == 0x0d &&
- i + 1 < buf.Length && buf[i + 1] == 0x0a)
- {
- i++;
- continue;
- }
- if (buf[i] == 0x0a && i + 1 < buf.Length)
- {
- if (buf[i + 1] == 0x0a)
- {
- i += 2;
- break;
- }
- if (buf[i + 1] == 0x0d &&
- i + 2 < buf.Length && buf[i + 2] == 0x0a)
- {
- 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++;
- encrypted = false; // no passphrase
- break;
- }
- }
- i++;
- }
-
- if (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++;
- }
- encoded_data = Util.fromBase64(buf, start, i - start);
-
- if (encoded_data.Length > 4 && // FSecure
- encoded_data[0] == (byte) 0x3f &&
- encoded_data[1] == (byte) 0x6f &&
- encoded_data[2] == (byte) 0xf9 &&
- encoded_data[3] == (byte) 0xeb)
- {
- Buffer _buf = new Buffer(encoded_data);
- _buf.getInt(); // 0x3f6ff9be
- _buf.getInt();
- byte[] _type = _buf.getString();
- //System.out.println("type: "+new String(_type));
- byte[] _cipher = _buf.getString();
- String s_cipher = Encoding.Default.GetString(_cipher);
- //System.out.println("cipher: "+cipher);
- if (s_cipher.Equals("3des-cbc"))
- {
- _buf.getInt();
- byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
- _buf.getByte(foo);
- encoded_data = foo;
- encrypted = true;
- throw new JSchException("unknown privatekey format: " + identity);
- }
- else if (s_cipher.Equals("none"))
- {
- _buf.getInt();
- //_buf.getInt();
-
- encrypted = false;
-
- byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
- _buf.getByte(foo);
- 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++;
- }
- publickeyblob = Util.fromBase64(buf, start, i - start);
-
- if (type == UNKNOWN)
- {
- if (publickeyblob[8] == 'd')
- {
- type = DSS;
- }
- else if (publickeyblob[8] == 'r')
- {
- 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++;
- }
- publickeyblob = Util.fromBase64(buf, start, i - start);
- }
- }
- catch (Exception e)
- {
- Console.WriteLine("Identity: " + e);
- if (e is JSchException) throw (JSchException) e;
- throw new JSchException(e.ToString());
- }
- }
-
- public String getAlgName()
- {
- if (type == RSA) return "ssh-rsa";
- return "ssh-dss";
- }
-
- public bool setPassphrase(String _passphrase)
- {
- /*
- hash is MD5
- h(0) <- hash(passphrase, iv);
- h(n) <- hash(h(n-1), passphrase, iv);
- key <- (h(0),...,h(n))[0,..,key.Length];
- */
- try
- {
- if (encrypted)
- {
- if (_passphrase == null) return false;
- byte[] passphrase = Encoding.Default.GetBytes(_passphrase);
- int hsize = hash.getBlockSize();
- byte[] hn = new byte[key.Length/hsize*hsize +
- (key.Length%hsize == 0 ? 0 : hsize)];
- byte[] tmp = null;
- if (keytype == OPENSSH)
- {
- for (int index = 0; index + hsize <= hn.Length;)
- {
- if (tmp != null)
- {
- hash.update(tmp, 0, tmp.Length);
- }
- hash.update(passphrase, 0, passphrase.Length);
- hash.update(iv, 0, iv.Length);
- tmp = hash.digest();
- Array.Copy(tmp, 0, hn, index, tmp.Length);
- index += tmp.Length;
- }
- Array.Copy(hn, 0, key, 0, key.Length);
- }
- else if (keytype == FSECURE)
- {
- for (int index = 0; index + hsize <= hn.Length;)
- {
- if (tmp != null)
- {
- hash.update(tmp, 0, tmp.Length);
- }
- hash.update(passphrase, 0, passphrase.Length);
- tmp = hash.digest();
- Array.Copy(tmp, 0, hn, index, tmp.Length);
- index += tmp.Length;
- }
- Array.Copy(hn, 0, key, 0, key.Length);
- }
- }
- if (decrypt())
- {
- encrypted = false;
- return true;
- }
- P_array = Q_array = G_array = pub_array = prv_array = null;
- return false;
- }
- catch (Exception e)
- {
- if (e is JSchException) throw (JSchException) e;
- throw new JSchException(e.ToString());
- }
- }
-
- public byte[] getPublicKeyBlob()
- {
- if (publickeyblob != null) return publickeyblob;
- if (type == RSA) return getPublicKeyBlob_rsa();
- return getPublicKeyBlob_dss();
- }
-
- private byte[] getPublicKeyBlob_rsa()
- {
- if (e_array == null) return null;
- Buffer buf = new Buffer("ssh-rsa".Length + 4 +
- e_array.Length + 4 +
- n_array.Length + 4);
- buf.putString(Encoding.Default.GetBytes("ssh-rsa"));
- buf.putString(e_array);
- buf.putString(n_array);
- return buf.buffer;
- }
-
- private byte[] getPublicKeyBlob_dss()
- {
- if (P_array == null) return null;
- Buffer buf = new Buffer("ssh-dss".Length + 4 +
- P_array.Length + 4 +
- Q_array.Length + 4 +
- G_array.Length + 4 +
- pub_array.Length + 4);
- buf.putString(Encoding.Default.GetBytes("ssh-dss"));
- buf.putString(P_array);
- buf.putString(Q_array);
- buf.putString(G_array);
- buf.putString(pub_array);
- return buf.buffer;
- }
-
- public byte[] getSignature(Session session, byte[] data)
- {
- if (type == RSA) return getSignature_rsa(session, data);
- return getSignature_dss(session, data);
- }
-
- private byte[] getSignature_rsa(Session session, byte[] data)
- {
- try
- {
- Type t = Type.GetType(jsch.getConfig("signature.rsa"));
- SignatureRSA rsa = (SignatureRSA) Activator.CreateInstance(t);
-
- rsa.init();
- rsa.setPrvKey(e_array, n_array, d_array, p_array, q_array, dmp1_array, dmq1_array, iqmp_array);
-
- /*
- byte[] goo=new byte[4];
- goo[0]=(byte)(session.getSessionId().Length>>>24);
- goo[1]=(byte)(session.getSessionId().Length>>>16);
- goo[2]=(byte)(session.getSessionId().Length>>>8);
- goo[3]=(byte)(session.getSessionId().Length);
- rsa.update(goo);
- rsa.update(session.getSessionId());
- */
- rsa.update(data);
- byte[] sig = rsa.sign();
- Buffer buf = new Buffer("ssh-rsa".Length + 4 +
- sig.Length + 4);
- buf.putString(Encoding.Default.GetBytes("ssh-rsa"));
- buf.putString(sig);
- return buf.buffer;
- }
- catch (Exception e)
- {
- Console.WriteLine(e);
- }
- return null;
- }
-
- private byte[] getSignature_dss(Session session, byte[] data)
- {
- /*
- byte[] foo;
- int i;
- System.out.print("P ");
- foo=P_array;
- for(i=0; i<foo.Length; i++){
- System.out.print(Integer.toHexString(foo[i]&0xff)+":");
- }
- System.out.println("");
- System.out.print("Q ");
- foo=Q_array;
- for(i=0; i<foo.Length; i++){
- System.out.print(Integer.toHexString(foo[i]&0xff)+":");
- }
- System.out.println("");
- System.out.print("G ");
- foo=G_array;
- for(i=0; i<foo.Length; i++){
- System.out.print(Integer.toHexString(foo[i]&0xff)+":");
- }
- System.out.println("");
- */
-
- try
- {
- Type t = Type.GetType(jsch.getConfig("signature.dss"));
- SignatureDSA dsa = (SignatureDSA) (Activator.CreateInstance(t));
- dsa.init();
- dsa.setPrvKey(prv_array, P_array, Q_array, G_array);
-
- /*
- byte[] goo=new byte[4];
- goo[0]=(byte)(session.getSessionId().Length>>>24);
- goo[1]=(byte)(session.getSessionId().Length>>>16);
- goo[2]=(byte)(session.getSessionId().Length>>>8);
- goo[3]=(byte)(session.getSessionId().Length);
- dsa.update(goo);
- dsa.update(session.getSessionId());
- */
- dsa.update(data);
- byte[] sig = dsa.sign();
- Buffer buf = new Buffer("ssh-dss".Length + 4 +
- sig.Length + 4);
- buf.putString(Encoding.Default.GetBytes("ssh-dss"));
- buf.putString(sig);
- return buf.buffer;
- }
- catch (Exception e)
- {
- Console.WriteLine("e " + e);
- }
- return null;
- }
-
- public bool decrypt()
- {
- if (type == RSA) return decrypt_rsa();
- return decrypt_dss();
- }
-
- private bool decrypt_rsa()
- {
- // byte[] p_array;
- // byte[] q_array;
- // byte[] dmp1_array;
- // byte[] dmq1_array;
- // byte[] iqmp_array;
-
- try
- {
- byte[] plain;
- if (encrypted)
- {
- if (keytype == OPENSSH)
- {
- cipher.init(Cipher.DECRYPT_MODE, key, iv);
- plain = new byte[encoded_data.Length];
- cipher.update(encoded_data, 0, encoded_data.Length, plain, 0);
- }
- else if (keytype == FSECURE)
- {
- for (int i = 0; i < iv.Length; i++) iv[i] = 0;
- cipher.init(Cipher.DECRYPT_MODE, key, iv);
- plain = new byte[encoded_data.Length];
- cipher.update(encoded_data, 0, encoded_data.Length, plain, 0);
- }
- else
- {
- return false;
- }
- }
- else
- {
- if (n_array != null) return true;
- plain = encoded_data;
- }
-
- if (keytype == FSECURE)
- {
- // FSecure
- Buffer buf = new Buffer(plain);
- int foo = buf.getInt();
- if (plain.Length != foo + 4)
- {
- return false;
- }
- e_array = buf.getMPIntBits();
- d_array = buf.getMPIntBits();
- n_array = buf.getMPIntBits();
- byte[] u_array = buf.getMPIntBits();
- p_array = buf.getMPIntBits();
- q_array = buf.getMPIntBits();
- return true;
- }
-
- int index = 0;
- int Length = 0;
-
- if (plain[index] != 0x30) return false;
- index++; // SEQUENCE
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
-
- if (plain[index] != 0x02) return false;
- index++; // INTEGER
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- index += Length;
-
- //System.out.println("int: len="+Length);
- //System.out.print(Integer.toHexString(plain[index-1]&0xff)+":");
- //System.out.println("");
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- n_array = new byte[Length];
- Array.Copy(plain, index, n_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: N len="+Length);
- for(int i=0; i<n_array.Length; i++){
- System.out.print(Integer.toHexString(n_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- e_array = new byte[Length];
- Array.Copy(plain, index, e_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: E len="+Length);
- for(int i=0; i<e_array.Length; i++){
- System.out.print(Integer.toHexString(e_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- d_array = new byte[Length];
- Array.Copy(plain, index, d_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: D len="+Length);
- for(int i=0; i<d_array.Length; i++){
- System.out.print(Integer.toHexString(d_array[i]&0xff)+":");
- }
- System.out.println("");
- */
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- p_array = new byte[Length];
- Array.Copy(plain, index, p_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: P len="+Length);
- for(int i=0; i<p_array.Length; i++){
- System.out.print(Integer.toHexString(p_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- q_array = new byte[Length];
- Array.Copy(plain, index, q_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: q len="+Length);
- for(int i=0; i<q_array.Length; i++){
- System.out.print(Integer.toHexString(q_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- dmp1_array = new byte[Length];
- Array.Copy(plain, index, dmp1_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: dmp1 len="+Length);
- for(int i=0; i<dmp1_array.Length; i++){
- System.out.print(Integer.toHexString(dmp1_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- dmq1_array = new byte[Length];
- Array.Copy(plain, index, dmq1_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: dmq1 len="+Length);
- for(int i=0; i<dmq1_array.Length; i++){
- System.out.print(Integer.toHexString(dmq1_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- iqmp_array = new byte[Length];
- Array.Copy(plain, index, iqmp_array, 0, Length);
- index += Length;
- /*
- System.out.println("int: iqmp len="+Length);
- for(int i=0; i<iqmp_array.Length; i++){
- System.out.print(Integer.toHexString(iqmp_array[i]&0xff)+":");
- }
- System.out.println("");
- */
- }
- catch
- {
- //System.out.println(e);
- return false;
- }
- return true;
- }
-
- private bool decrypt_dss()
- {
- try
- {
- byte[] plain;
- if (encrypted)
- {
- if (keytype == OPENSSH)
- {
- cipher.init(Cipher.DECRYPT_MODE, key, iv);
- plain = new byte[encoded_data.Length];
- cipher.update(encoded_data, 0, encoded_data.Length, plain, 0);
- /*
- for(int i=0; i<plain.Length; i++){
- System.out.print(Integer.toHexString(plain[i]&0xff)+":");
- }
- System.out.println("");
- */
- }
- else if (keytype == FSECURE)
- {
- for (int i = 0; i < iv.Length; i++) iv[i] = 0;
- cipher.init(Cipher.DECRYPT_MODE, key, iv);
- plain = new byte[encoded_data.Length];
- cipher.update(encoded_data, 0, encoded_data.Length, plain, 0);
- }
- else
- {
- return false;
- }
- }
- else
- {
- if (P_array != null) return true;
- plain = encoded_data;
- }
-
- if (keytype == FSECURE)
- {
- // FSecure
- Buffer buf = new Buffer(plain);
- int foo = buf.getInt();
- if (plain.Length != foo + 4)
- {
- return false;
- }
- P_array = buf.getMPIntBits();
- G_array = buf.getMPIntBits();
- Q_array = buf.getMPIntBits();
- pub_array = buf.getMPIntBits();
- prv_array = buf.getMPIntBits();
- return true;
- }
-
- int index = 0;
- int Length = 0;
-
- if (plain[index] != 0x30) return false;
- index++; // SEQUENCE
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
-
- if (plain[index] != 0x02) return false;
- index++; // INTEGER
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- index += Length;
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- P_array = new byte[Length];
- Array.Copy(plain, index, P_array, 0, Length);
- index += Length;
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- Q_array = new byte[Length];
- Array.Copy(plain, index, Q_array, 0, Length);
- index += Length;
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- G_array = new byte[Length];
- Array.Copy(plain, index, G_array, 0, Length);
- index += Length;
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- pub_array = new byte[Length];
- Array.Copy(plain, index, pub_array, 0, Length);
- index += Length;
-
- index++;
- Length = plain[index++] & 0xff;
- if ((Length & 0x80) != 0)
- {
- int foo = Length & 0x7f;
- Length = 0;
- while (foo-- > 0)
- {
- Length = (Length << 8) + (plain[index++] & 0xff);
- }
- }
- prv_array = new byte[Length];
- Array.Copy(plain, index, prv_array, 0, Length);
- index += Length;
- }
- catch
- {
- //System.out.println(e);
- //e.printStackTrace();
- return false;
- }
- return true;
- }
-
- public bool isEncrypted()
- {
- return encrypted;
- }
-
- public String getName()
- {
- return identity;
- }
-
- private int writeSEQUENCE(byte[] buf, int index, int len)
- {
- buf[index++] = 0x30;
- index = writeLength(buf, index, len);
- return index;
- }
-
- private int writeINTEGER(byte[] buf, int index, byte[] data)
- {
- buf[index++] = 0x02;
- index = writeLength(buf, index, data.Length);
- Array.Copy(data, 0, buf, index, data.Length);
- index += data.Length;
- return index;
- }
-
- private int countLength(int i_len)
- {
- uint len = (uint) i_len;
- int i = 1;
- if (len <= 0x7f) return i;
- while (len > 0)
- {
- len >>= 8;
- i++;
- }
- return i;
- }
-
- private int writeLength(byte[] data, int index, int i_len)
- {
- int len = (int) i_len;
- int i = countLength(len) - 1;
- if (i == 0)
- {
- data[index++] = (byte) len;
- return index;
- }
- data[index++] = (byte) (0x80 | i);
- int j = index + i;
- while (i > 0)
- {
- data[index + i - 1] = (byte) (len & 0xff);
- len >>= 8;
- i--;
- }
- return j;
- }
-
- private byte a2b(byte c)
- {
- if ('0' <= c && c <= '9') return (byte) (c - '0');
- if ('a' <= c && c <= 'z') return (byte) (c - 'a' + 10);
- return (byte) (c - 'A' + 10);
- }
-
- private byte b2a(byte c)
- {
- if (0 <= c && c <= 9) return (byte) (c + '0');
- return (byte) (c - 10 + 'A');
- }
- }
- }