From fffd213c8cba2135afda493d797c41c10354770e Mon Sep 17 00:00:00 2001
From: Othmar Gsenger <otti@anytun.org>
Date: Sat, 12 Apr 2008 11:38:42 +0000
Subject: big svn cleanup

---
 keyDerivation.cpp | 153 ------------------------------------------------------
 1 file changed, 153 deletions(-)
 delete mode 100644 keyDerivation.cpp

(limited to 'keyDerivation.cpp')

diff --git a/keyDerivation.cpp b/keyDerivation.cpp
deleted file mode 100644
index aafde10..0000000
--- a/keyDerivation.cpp
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- *  anytun
- *
- *  The secure anycast tunneling protocol (satp) defines a protocol used
- *  for communication between any combination of unicast and anycast
- *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
- *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
- *  ethernet, ip, arp ...). satp directly includes cryptography and
- *  message authentication based on the methodes used by SRTP.  It is
- *  intended to deliver a generic, scaleable and secure solution for
- *  tunneling and relaying of packets of any protocol.
- *
- *
- *  Copyright (C) 2007 anytun.org <satp@wirdorange.org>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2
- *  as published by the Free Software Foundation.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program (see the file COPYING included with this
- *  distribution); if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-
-#include "log.h"
-#include "keyDerivation.h"
-#include "mpi.h"
-#include "threadUtils.hpp"
-
-#include <stdexcept>
-#include <iostream>
-#include <string>
-
-#include <gcrypt.h>
-
-
-void KeyDerivation::setLogKDRate(const uint8_t log_rate)
-{
-  Lock lock(mutex_);
-  if( log_rate < 49 )
-    ld_kdr_ = log_rate;
-}
-
-//****** NullKeyDerivation ******
-
-void NullKeyDerivation::generate(satp_prf_label label, seq_nr_t seq_nr, Buffer& key)
-{
-  for(u_int32_t i=0; i < key.getLength(); ++i) key[i] = 0;
-}
-
-//****** AesIcmKeyDerivation ******
-
-AesIcmKeyDerivation::~AesIcmKeyDerivation()
-{
-  Lock lock(mutex_);
-  if(cipher_)
-    gcry_cipher_close( cipher_ );
-}
-
-void AesIcmKeyDerivation::updateMasterKey()
-{
-  if(!cipher_)
-    return;
-
-  gcry_error_t err = gcry_cipher_setkey( cipher_, master_key_.getBuf(), master_key_.getLength() );
-  if( err )
-    cLog.msg(Log::PRIO_ERR) << "KeyDerivation::updateMasterKey: Failed to set cipher key: " << gpg_strerror( err );
-}
-
-void AesIcmKeyDerivation::init(Buffer key, Buffer salt)
-{
-  Lock lock(mutex_);
-  if(cipher_)
-    gcry_cipher_close( cipher_ );
-
-  // TODO: hardcoded size
-  gcry_error_t err = gcry_cipher_open( &cipher_, GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CTR, 0 );
-  if( err ) {
-    cLog.msg(Log::PRIO_ERR) << "KeyDerivation::init: Failed to open cipher: " << gpg_strerror( err );
-    return;
-  }
-  
-  master_salt_ = SyncBuffer(salt);
-  master_key_ = SyncBuffer(key);
-
-  updateMasterKey();
-}
-
-void AesIcmKeyDerivation::generate(satp_prf_label label, seq_nr_t seq_nr, Buffer& key) 
-{
-  Lock lock(mutex_);
-  if(!cipher_)
-  {
-    cLog.msg(Log::PRIO_ERR) << "KeyDerivation::generate: cipher not opened";
-    return;
-  }
-
-  gcry_error_t err = gcry_cipher_reset( cipher_ );
-  if( err )
-    cLog.msg(Log::PRIO_ERR) << "KeyDerivation::generate: Failed to reset cipher: " << gpg_strerror( err );
-
-  // see at: http://tools.ietf.org/html/rfc3711#section-4.3
-  // *  Let r = index DIV key_derivation_rate (with DIV as defined above).
-  // *  Let key_id = <label> || r.
-  // *  Let x = key_id XOR master_salt, where key_id and master_salt are
-  //    aligned so that their least significant bits agree (right-
-  //    alignment).
-  //
-
-  Mpi r(48); // ld(kdr) <= 48
-  if( ld_kdr_ == -1 )    // means key_derivation_rate = 0
-    r = 0;  // TODO: no new key should be generated if r == 0, except it is the first time
-  else
-  {
-    Mpi seq(32);
-    seq = seq_nr;
-    Mpi rate(48);
-    rate = 1;
-    rate = rate.mul2exp(ld_kdr_);
-    r = seq / rate;
-  }
-      // TODO: generate key only if index % r == 0, except it is the first time
-
-  Mpi key_id(128);                                                   // TODO: hardcoded size
-  Mpi l(128);                                                 // TODO: hardcoded size
-  l = label;
-  key_id = l.mul2exp(48) + r;
-
-  Mpi salt(master_salt_.getBuf(), master_salt_.getLength());
-  Mpi x(128);                                                        // TODO: hardcoded size
-  x = key_id ^ salt;
-
-  size_t written;
-  u_int8_t *ctr_buf = x.mul2exp(16).getNewBuf(&written);         // TODO: hardcoded size
-  err = gcry_cipher_setctr( cipher_ , ctr_buf, written );
-  delete[] ctr_buf;
-
-  if( err )
-    cLog.msg(Log::PRIO_ERR) << "KeyDerivation::generate: Failed to set CTR: " << gpg_strerror( err );
-
-  for(u_int32_t i=0; i < key.getLength(); ++i) key[i] = 0;
-  err = gcry_cipher_encrypt( cipher_, key, key.getLength(), NULL, 0);
-  if( err ) 
-    cLog.msg(Log::PRIO_ERR) << "KeyDerivation::generate: Failed to generate cipher bitstream: " << gpg_strerror( err );
-}
-
-- 
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