1 files changed, 0 insertions, 170 deletions
diff --git a/src/modes/aead/eax/eax.cpp b/src/modes/aead/eax/eax.cpp
deleted file mode 100644
index 249bf5f7e..000000000
--- a/src/modes/aead/eax/eax.cpp
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
-* EAX Mode Encryption
-* (C) 1999-2007 Jack Lloyd
-*
-* Distributed under the terms of the Botan license
-*/
-
-#include <botan/eax.h>
-#include <botan/cmac.h>
-#include <botan/ctr.h>
-#include <botan/parsing.h>
-#include <botan/internal/xor_buf.h>
-#include <algorithm>
-
-namespace Botan {
-
-namespace {
-
-/*
-* EAX MAC-based PRF
-*/
-secure_vector<byte> eax_prf(byte tag, size_t block_size,
-                           MessageAuthenticationCode& mac,
-                           const byte in[], size_t length)
-   {
-   for(size_t i = 0; i != block_size - 1; ++i)
-      mac.update(0);
-   mac.update(tag);
-   mac.update(in, length);
-   return mac.final();
-   }
-
-}
-
-/*
-* EAX_Mode Constructor
-*/
-EAX_Mode::EAX_Mode(BlockCipher* cipher, size_t tag_size) :
-   m_tag_size(tag_size ? tag_size : cipher->block_size()),
-   m_cipher(cipher),
-   m_ctr(new CTR_BE(m_cipher->clone())),
-   m_cmac(new CMAC(m_cipher->clone()))
-   {
-   if(m_tag_size < 8 || m_tag_size > m_cmac->output_length())
-      throw Invalid_Argument(name() + ": Bad tag size " + std::to_string(tag_size));
-   }
-
-void EAX_Mode::clear()
-   {
-   m_cipher.reset();
-   m_ctr.reset();
-   m_cmac.reset();
-   zeroise(m_ad_mac);
-   zeroise(m_nonce_mac);
-   }
-
-std::string EAX_Mode::name() const
-   {
-   return (m_cipher->name() + "/EAX");
-   }
-
-size_t EAX_Mode::update_granularity() const
-   {
-   return 8 * m_cipher->parallel_bytes();
-   }
-
-Key_Length_Specification EAX_Mode::key_spec() const
-   {
-   return m_cipher->key_spec();
-   }
-
-/*
-* Set the EAX key
-*/
-void EAX_Mode::key_schedule(const byte key[], size_t length)
-   {
-   /*
-   * These could share the key schedule, which is one nice part of EAX,
-   * but it's much easier to ignore that here...
-   */
-   m_ctr->set_key(key, length);
-   m_cmac->set_key(key, length);
-
-   m_ad_mac = eax_prf(1, block_size(), *m_cmac, nullptr, 0);
-   }
-
-/*
-* Set the EAX associated data
-*/
-void EAX_Mode::set_associated_data(const byte ad[], size_t length)
-   {
-   m_ad_mac = eax_prf(1, block_size(), *m_cmac, ad, length);
-   }
-
-secure_vector<byte> EAX_Mode::start(const byte nonce[], size_t nonce_len)
-   {
-   if(!valid_nonce_length(nonce_len))
-      throw Invalid_IV_Length(name(), nonce_len);
-
-   m_nonce_mac = eax_prf(0, block_size(), *m_cmac, nonce, nonce_len);
-
-   m_ctr->set_iv(&m_nonce_mac[0], m_nonce_mac.size());
-
-   for(size_t i = 0; i != block_size() - 1; ++i)
-      m_cmac->update(0);
-   m_cmac->update(2);
-
-   return secure_vector<byte>();
-   }
-
-void EAX_Encryption::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_ctr->cipher(buf, buf, sz);
-   m_cmac->update(buf, sz);
-   }
-
-void EAX_Encryption::finish(secure_vector<byte>& buffer, size_t offset)
-   {
-   update(buffer, offset);
-
-   secure_vector<byte> data_mac = m_cmac->final();
-   xor_buf(data_mac, m_nonce_mac, data_mac.size());
-   xor_buf(data_mac, m_ad_mac, data_mac.size());
-
-   buffer += std::make_pair(&data_mac[0], tag_size());
-   }
-
-void EAX_Decryption::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_cmac->update(buf, sz);
-   m_ctr->cipher(buf, buf, sz);
-   }
-
-void EAX_Decryption::finish(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];
-
-   BOTAN_ASSERT(sz >= tag_size(), "Have the tag as part of final input");
-
-   const size_t remaining = sz - tag_size();
-
-   if(remaining)
-      {
-      m_cmac->update(buf, remaining);
-      m_ctr->cipher(buf, buf, remaining);
-      }
-
-   const byte* included_tag = &buf[remaining];
-
-   secure_vector<byte> mac = m_cmac->final();
-   mac ^= m_nonce_mac;
-   mac ^= m_ad_mac;
-
-   if(!same_mem(&mac[0], included_tag, tag_size()))
-      throw Integrity_Failure("EAX tag check failed");
-
-   buffer.resize(offset + remaining);
-   }
-
-}