diff options
Diffstat (limited to 'src/cbc_mac.cpp')
-rw-r--r-- | src/cbc_mac.cpp | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/src/cbc_mac.cpp b/src/cbc_mac.cpp deleted file mode 100644 index d5275b0ed..000000000 --- a/src/cbc_mac.cpp +++ /dev/null @@ -1,109 +0,0 @@ -/************************************************* -* CBC-MAC Source File * -* (C) 1999-2007 Jack Lloyd * -*************************************************/ - -#include <botan/cbc_mac.h> -#include <botan/lookup.h> -#include <botan/xor_buf.h> -#include <algorithm> - -namespace Botan { - -/************************************************* -* Update an CBC-MAC Calculation * -*************************************************/ -void CBC_MAC::add_data(const byte input[], u32bit length) - { - u32bit xored = std::min(OUTPUT_LENGTH - position, length); - xor_buf(state + position, input, xored); - position += xored; - - if(position < OUTPUT_LENGTH) - return; - - e->encrypt(state); - input += xored; - length -= xored; - while(length >= OUTPUT_LENGTH) - { - xor_buf(state, input, OUTPUT_LENGTH); - e->encrypt(state); - input += OUTPUT_LENGTH; - length -= OUTPUT_LENGTH; - } - - xor_buf(state, input, length); - position = length; - } - -/************************************************* -* Finalize an CBC-MAC Calculation * -*************************************************/ -void CBC_MAC::final_result(byte mac[]) - { - if(position) - e->encrypt(state); - - copy_mem(mac, state.begin(), state.size()); - state.clear(); - position = 0; - } - -/************************************************* -* CBC-MAC Key Schedule * -*************************************************/ -void CBC_MAC::key(const byte key[], u32bit length) - { - e->set_key(key, length); - } - -/************************************************* -* Clear memory of sensitive data * -*************************************************/ -void CBC_MAC::clear() throw() - { - e->clear(); - state.clear(); - position = 0; - } - -/************************************************* -* Return the name of this type * -*************************************************/ -std::string CBC_MAC::name() const - { - return "CBC-MAC(" + e->name() + ")"; - } - -/************************************************* -* Return a clone of this object * -*************************************************/ -MessageAuthenticationCode* CBC_MAC::clone() const - { - return new CBC_MAC(e->name()); - } - -/************************************************* -* CBC-MAC Constructor * -*************************************************/ -CBC_MAC::CBC_MAC(const std::string& cipher) : - MessageAuthenticationCode(block_size_of(cipher), - min_keylength_of(cipher), - max_keylength_of(cipher), - keylength_multiple_of(cipher)), - state(block_size_of(cipher)) - { - e = get_block_cipher(cipher); - position = 0; - } - -/************************************************* -* CBC-MAC Destructor * -*************************************************/ -CBC_MAC::~CBC_MAC() - { - delete e; - } - -} |