1 files changed, 0 insertions, 266 deletions
diff --git a/src/modes/aead/ccm/ccm.cpp b/src/modes/aead/ccm/ccm.cpp
deleted file mode 100644
index 50fc38738..000000000
--- a/src/modes/aead/ccm/ccm.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
-* CCM Mode Encryption
-* (C) 2013 Jack Lloyd
-*
-* Distributed under the terms of the Botan license
-*/
-
-#include <botan/ccm.h>
-#include <botan/parsing.h>
-#include <botan/internal/xor_buf.h>
-#include <algorithm>
-
-namespace Botan {
-
-/*
-* CCM_Mode Constructor
-*/
-CCM_Mode::CCM_Mode(BlockCipher* cipher, size_t tag_size, size_t L) :
-   m_tag_size(tag_size),
-   m_L(L),
-   m_cipher(cipher)
-   {
-   if(m_cipher->block_size() != BS)
-      throw std::invalid_argument(m_cipher->name() + " cannot be used with CCM mode");
-
-   if(L < 2 || L > 8)
-      throw std::invalid_argument("Invalid CCM L value " + std::to_string(L));
-
-   if(tag_size < 4 || tag_size > 16 || tag_size % 2 != 0)
-      throw std::invalid_argument("invalid CCM tag length " + std::to_string(tag_size));
-   }
-
-void CCM_Mode::clear()
-   {
-   m_cipher.reset();
-   m_msg_buf.clear();
-   m_ad_buf.clear();
-   }
-
-std::string CCM_Mode::name() const
-   {
-   return (m_cipher->name() + "/CCM(" + std::to_string(tag_size()) + "," + std::to_string(L())) + ")";
-   }
-
-bool CCM_Mode::valid_nonce_length(size_t n) const
-   {
-   return (n == (15-L()));
-   }
-
-size_t CCM_Mode::default_nonce_length() const
-   {
-   return (15-L());
-   }
-
-size_t CCM_Mode::update_granularity() const
-   {
-   /*
-   This value does not particularly matter as regardless CCM_Mode::update
-   buffers all input, so in theory this could be 1. However as for instance
-   Transformation_Filter creates update_granularity() byte buffers, use a
-   somewhat large size to avoid bouncing on a tiny buffer.
-   */
-   return m_cipher->parallel_bytes();
-   }
-
-Key_Length_Specification CCM_Mode::key_spec() const
-   {
-   return m_cipher->key_spec();
-   }
-
-void CCM_Mode::key_schedule(const byte key[], size_t length)
-   {
-   m_cipher->set_key(key, length);
-   }
-
-void CCM_Mode::set_associated_data(const byte ad[], size_t length)
-   {
-   m_ad_buf.clear();
-
-   if(length)
-      {
-      // FIXME: support larger AD using length encoding rules
-      BOTAN_ASSERT(length < (0xFFFF - 0xFF), "Supported CCM AD length");
-
-      m_ad_buf.push_back(get_byte<u16bit>(0, length));
-      m_ad_buf.push_back(get_byte<u16bit>(1, length));
-      m_ad_buf += std::make_pair(ad, length);
-      while(m_ad_buf.size() % BS)
-         m_ad_buf.push_back(0); // pad with zeros to full block size
-      }
-   }
-
-secure_vector<byte> CCM_Mode::start(const byte nonce[], size_t nonce_len)
-   {
-   if(!valid_nonce_length(nonce_len))
-      throw Invalid_IV_Length(name(), nonce_len);
-
-   m_nonce.assign(nonce, nonce + nonce_len);
-   m_msg_buf.clear();
-
-   return secure_vector<byte>();
-   }
-
-void CCM_Mode::update(secure_vector<byte>& buffer, size_t offset)
-   {
-   BOTAN_ASSERT(buffer.size() >= offset, "Offset is sane");
-   const size_t sz = buffer.size() - offset;
-   byte* buf = &buffer[offset];
-
-   m_msg_buf.insert(m_msg_buf.end(), buf, buf + sz);
-   buffer.resize(offset); // truncate msg
-   }
-
-void CCM_Mode::encode_length(size_t len, byte out[])
-   {
-   const size_t len_bytes = L();
-
-   BOTAN_ASSERT(len_bytes < sizeof(size_t), "Length field fits");
-
-   for(size_t i = 0; i != len_bytes; ++i)
-      out[i] = get_byte(sizeof(size_t)-i, len);
-
-   BOTAN_ASSERT((len >> (len_bytes*8)) == 0, "Message length fits in field");
-   }
-
-void CCM_Mode::inc(secure_vector<byte>& C)
-   {
-   for(size_t i = 0; i != C.size(); ++i)
-      if(++C[C.size()-i-1])
-         break;
-   }
-
-secure_vector<byte> CCM_Mode::format_b0(size_t sz)
-   {
-   secure_vector<byte> B0(BS);
-
-   const byte b_flags = (m_ad_buf.size() ? 64 : 0) + (((tag_size()/2)-1) << 3) + (L()-1);
-
-   B0[0] = b_flags;
-   copy_mem(&B0[1], &m_nonce[0], m_nonce.size());
-   encode_length(sz, &B0[m_nonce.size()+1]);
-
-   return B0;
-   }
-
-secure_vector<byte> CCM_Mode::format_c0()
-   {
-   secure_vector<byte> C(BS);
-
-   const byte a_flags = L()-1;
-
-   C[0] = a_flags;
-   copy_mem(&C[1], &m_nonce[0], m_nonce.size());
-
-   return C;
-   }
-
-void CCM_Encryption::finish(secure_vector<byte>& buffer, size_t offset)
-   {
-   BOTAN_ASSERT(buffer.size() >= offset, "Offset is sane");
-
-   buffer.insert(buffer.begin() + offset, msg_buf().begin(), msg_buf().end());
-
-   const size_t sz = buffer.size() - offset;
-   byte* buf = &buffer[offset];
-
-   const secure_vector<byte>& ad = ad_buf();
-   BOTAN_ASSERT(ad.size() % BS == 0, "AD is block size multiple");
-
-   const BlockCipher& E = cipher();
-
-   secure_vector<byte> T(BS);
-   E.encrypt(format_b0(sz), T);
-
-   for(size_t i = 0; i != ad.size(); i += BS)
-      {
-      xor_buf(&T[0], &ad[i], BS);
-      E.encrypt(T);
-      }
-
-   secure_vector<byte> C = format_c0();
-   secure_vector<byte> S0(BS);
-   E.encrypt(C, S0);
-   inc(C);
-
-   secure_vector<byte> X(BS);
-
-   const byte* buf_end = &buf[sz];
-
-   while(buf != buf_end)
-      {
-      const size_t to_proc = std::min<size_t>(BS, buf_end - buf);
-
-      xor_buf(&T[0], buf, to_proc);
-      E.encrypt(T);
-
-      E.encrypt(C, X);
-      xor_buf(buf, &X[0], to_proc);
-      inc(C);
-
-      buf += to_proc;
-      }
-
-   T ^= S0;
-
-   buffer += std::make_pair(&T[0], tag_size());
-   }
-
-void CCM_Decryption::finish(secure_vector<byte>& buffer, size_t offset)
-   {
-   BOTAN_ASSERT(buffer.size() >= offset, "Offset is sane");
-
-   buffer.insert(buffer.begin() + offset, msg_buf().begin(), msg_buf().end());
-
-   const size_t sz = buffer.size() - offset;
-   byte* buf = &buffer[offset];
-
-   BOTAN_ASSERT(sz >= tag_size(), "We have the tag");
-
-   const secure_vector<byte>& ad = ad_buf();
-   BOTAN_ASSERT(ad.size() % BS == 0, "AD is block size multiple");
-
-   const BlockCipher& E = cipher();
-
-   secure_vector<byte> T(BS);
-   E.encrypt(format_b0(sz - tag_size()), T);
-
-   for(size_t i = 0; i != ad.size(); i += BS)
-      {
-      xor_buf(&T[0], &ad[i], BS);
-      E.encrypt(T);
-      }
-
-   secure_vector<byte> C = format_c0();
-
-   secure_vector<byte> S0(BS);
-   E.encrypt(C, S0);
-   inc(C);
-
-   secure_vector<byte> X(BS);
-
-   const byte* buf_end = &buf[sz - tag_size()];
-
-   while(buf != buf_end)
-      {
-      const size_t to_proc = std::min<size_t>(BS, buf_end - buf);
-
-      E.encrypt(C, X);
-      xor_buf(buf, &X[0], to_proc);
-      inc(C);
-
-      xor_buf(&T[0], buf, to_proc);
-      E.encrypt(T);
-
-      buf += to_proc;
-      }
-
-   T ^= S0;
-
-   if(!same_mem(&T[0], buf_end, tag_size()))
-      throw Integrity_Failure("CCM tag check failed");
-
-   buffer.resize(buffer.size() - tag_size());
-   }
-
-}