diff options
author | lloyd <[email protected]> | 2008-09-28 18:15:52 +0000 |
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committer | lloyd <[email protected]> | 2008-09-28 18:15:52 +0000 |
commit | 983a8ecb42e844f89466d0ae52bba591d4fc4275 (patch) | |
tree | de01378ee9be0ba8bec28bc08d3bde6e422ff898 /src/ofb.cpp | |
parent | d59f6a2c9e797ee22c21b2d85c662e0fe8d1cf35 (diff) |
Modularize cipher modes
Diffstat (limited to 'src/ofb.cpp')
-rw-r--r-- | src/ofb.cpp | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/src/ofb.cpp b/src/ofb.cpp deleted file mode 100644 index db254d329..000000000 --- a/src/ofb.cpp +++ /dev/null @@ -1,65 +0,0 @@ -/************************************************* -* OFB Mode Source File * -* (C) 1999-2007 Jack Lloyd * -*************************************************/ - -#include <botan/ofb.h> -#include <botan/lookup.h> -#include <botan/xor_buf.h> -#include <algorithm> - -namespace Botan { - -/************************************************* -* OFB Constructor * -*************************************************/ -OFB::OFB(const std::string& cipher_name) : - BlockCipherMode(cipher_name, "OFB", block_size_of(cipher_name), 2) - { - } - -/************************************************* -* OFB Constructor * -*************************************************/ -OFB::OFB(const std::string& cipher_name, const SymmetricKey& key, - const InitializationVector& iv) : - BlockCipherMode(cipher_name, "OFB", block_size_of(cipher_name), 2) - { - set_key(key); - set_iv(iv); - } - -/************************************************* -* OFB Encryption/Decryption * -*************************************************/ -void OFB::write(const byte input[], u32bit length) - { - u32bit copied = std::min(BLOCK_SIZE - position, length); - xor_buf(buffer, input, state + position, copied); - send(buffer, copied); - input += copied; - length -= copied; - position += copied; - - if(position == BLOCK_SIZE) - { - cipher->encrypt(state); - position = 0; - } - - while(length >= BLOCK_SIZE) - { - xor_buf(buffer, input, state, BLOCK_SIZE); - send(buffer, BLOCK_SIZE); - - input += BLOCK_SIZE; - length -= BLOCK_SIZE; - cipher->encrypt(state); - } - - xor_buf(buffer, input, state + position, length); - send(buffer, length); - position += length; - } - -} |