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Diffstat (limited to 'src/cipher/noekeon/noekeon.cpp')
-rw-r--r-- | src/cipher/noekeon/noekeon.cpp | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/src/cipher/noekeon/noekeon.cpp b/src/cipher/noekeon/noekeon.cpp deleted file mode 100644 index 437972fe5..000000000 --- a/src/cipher/noekeon/noekeon.cpp +++ /dev/null @@ -1,196 +0,0 @@ -/************************************************* -* Noekeon Source File * -* (C) 1999-2008 Jack Lloyd * -*************************************************/ - -#include <botan/noekeon.h> -#include <botan/loadstor.h> -#include <botan/bit_ops.h> - -namespace Botan { - -namespace { - -/************************************************* -* Noekeon's Theta Operation * -*************************************************/ -inline void theta(u32bit& A0, u32bit& A1, - u32bit& A2, u32bit& A3, - const u32bit EK[4]) - { - u32bit T = A0 ^ A2; - T ^= rotate_left(T, 8) ^ rotate_right(T, 8); - A1 ^= T; - A3 ^= T; - - A0 ^= EK[0]; - A1 ^= EK[1]; - A2 ^= EK[2]; - A3 ^= EK[3]; - - T = A1 ^ A3; - T ^= rotate_left(T, 8) ^ rotate_right(T, 8); - A0 ^= T; - A2 ^= T; - } - -/************************************************* -* Theta With Null Key * -*************************************************/ -inline void theta(u32bit& A0, u32bit& A1, - u32bit& A2, u32bit& A3) - { - u32bit T = A0 ^ A2; - T ^= rotate_left(T, 8) ^ rotate_right(T, 8); - A1 ^= T; - A3 ^= T; - - T = A1 ^ A3; - T ^= rotate_left(T, 8) ^ rotate_right(T, 8); - A0 ^= T; - A2 ^= T; - } - -/************************************************* -* Noekeon's Gamma S-Box Layer * -*************************************************/ -inline void gamma(u32bit& A0, u32bit& A1, u32bit& A2, u32bit& A3) - { - A1 ^= ~A3 & ~A2; - A0 ^= A2 & A1; - - u32bit T = A3; - A3 = A0; - A0 = T; - - A2 ^= A0 ^ A1 ^ A3; - - A1 ^= ~A3 & ~A2; - A0 ^= A2 & A1; - } - -} - -/************************************************* -* Noekeon Round Constants * -*************************************************/ -const byte Noekeon::RC[] = { - 0x80, 0x1B, 0x36, 0x6C, 0xD8, 0xAB, 0x4D, 0x9A, - 0x2F, 0x5E, 0xBC, 0x63, 0xC6, 0x97, 0x35, 0x6A, - 0xD4 }; - -/************************************************* -* Noekeon Encryption * -*************************************************/ -void Noekeon::enc(const byte in[], byte out[]) const - { - u32bit A0 = load_be<u32bit>(in, 0); - u32bit A1 = load_be<u32bit>(in, 1); - u32bit A2 = load_be<u32bit>(in, 2); - u32bit A3 = load_be<u32bit>(in, 3); - - for(u32bit j = 0; j != 16; ++j) - { - A0 ^= RC[j]; - theta(A0, A1, A2, A3, EK); - - A1 = rotate_left(A1, 1); - A2 = rotate_left(A2, 5); - A3 = rotate_left(A3, 2); - - gamma(A0, A1, A2, A3); - - A1 = rotate_right(A1, 1); - A2 = rotate_right(A2, 5); - A3 = rotate_right(A3, 2); - } - - A0 ^= RC[16]; - theta(A0, A1, A2, A3, EK); - - store_be(out, A0, A1, A2, A3); - } - -/************************************************* -* Noekeon Encryption * -*************************************************/ -void Noekeon::dec(const byte in[], byte out[]) const - { - u32bit A0 = load_be<u32bit>(in, 0); - u32bit A1 = load_be<u32bit>(in, 1); - u32bit A2 = load_be<u32bit>(in, 2); - u32bit A3 = load_be<u32bit>(in, 3); - - for(u32bit j = 16; j != 0; --j) - { - theta(A0, A1, A2, A3, DK); - A0 ^= RC[j]; - - A1 = rotate_left(A1, 1); - A2 = rotate_left(A2, 5); - A3 = rotate_left(A3, 2); - - gamma(A0, A1, A2, A3); - - A1 = rotate_right(A1, 1); - A2 = rotate_right(A2, 5); - A3 = rotate_right(A3, 2); - } - - theta(A0, A1, A2, A3, DK); - A0 ^= RC[0]; - - store_be(out, A0, A1, A2, A3); - } - -/************************************************* -* Noekeon Key Schedule * -*************************************************/ -void Noekeon::key(const byte key[], u32bit) - { - u32bit A0 = load_be<u32bit>(key, 0); - u32bit A1 = load_be<u32bit>(key, 1); - u32bit A2 = load_be<u32bit>(key, 2); - u32bit A3 = load_be<u32bit>(key, 3); - - for(u32bit j = 0; j != 16; ++j) - { - A0 ^= RC[j]; - theta(A0, A1, A2, A3); - - A1 = rotate_left(A1, 1); - A2 = rotate_left(A2, 5); - A3 = rotate_left(A3, 2); - - gamma(A0, A1, A2, A3); - - A1 = rotate_right(A1, 1); - A2 = rotate_right(A2, 5); - A3 = rotate_right(A3, 2); - } - - A0 ^= RC[16]; - - DK[0] = A0; - DK[1] = A1; - DK[2] = A2; - DK[3] = A3; - - theta(A0, A1, A2, A3); - - EK[0] = A0; - EK[1] = A1; - EK[2] = A2; - EK[3] = A3; - } - -/************************************************* -* Clear memory of sensitive data * -*************************************************/ -void Noekeon::clear() throw() - { - EK.clear(); - DK.clear(); - } - -} |