diff options
Diffstat (limited to 'botan/src/block/tea/tea.cpp')
| -rw-r--r-- | botan/src/block/tea/tea.cpp | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/botan/src/block/tea/tea.cpp b/botan/src/block/tea/tea.cpp deleted file mode 100644 index 2b4212d..0000000 --- a/botan/src/block/tea/tea.cpp +++ /dev/null @@ -1,58 +0,0 @@ -/* -* TEA -* (C) 1999-2007 Jack Lloyd -* -* Distributed under the terms of the Botan license -*/ - -#include <botan/tea.h> -#include <botan/loadstor.h> - -namespace Botan { - -/* -* TEA Encryption -*/ -void TEA::enc(const byte in[], byte out[]) const - { - u32bit L = load_be<u32bit>(in, 0), R = load_be<u32bit>(in, 1); - - u32bit S = 0; - for(u32bit j = 0; j != 32; ++j) - { - S += 0x9E3779B9; - L += ((R << 4) + K[0]) ^ (R + S) ^ ((R >> 5) + K[1]); - R += ((L << 4) + K[2]) ^ (L + S) ^ ((L >> 5) + K[3]); - } - - store_be(out, L, R); - } - -/* -* TEA Decryption -*/ -void TEA::dec(const byte in[], byte out[]) const - { - u32bit L = load_be<u32bit>(in, 0), R = load_be<u32bit>(in, 1); - - u32bit S = 0xC6EF3720; - for(u32bit j = 0; j != 32; ++j) - { - R -= ((L << 4) + K[2]) ^ (L + S) ^ ((L >> 5) + K[3]); - L -= ((R << 4) + K[0]) ^ (R + S) ^ ((R >> 5) + K[1]); - S -= 0x9E3779B9; - } - - store_be(out, L, R); - } - -/* -* TEA Key Schedule -*/ -void TEA::key_schedule(const byte key[], u32bit) - { - for(u32bit j = 0; j != 4; ++j) - K[j] = load_be<u32bit>(key, j); - } - -} |
