diff options
Diffstat (limited to 'src/gost.cpp')
-rw-r--r-- | src/gost.cpp | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/src/gost.cpp b/src/gost.cpp deleted file mode 100644 index dc2b397e7..000000000 --- a/src/gost.cpp +++ /dev/null @@ -1,72 +0,0 @@ -/************************************************* -* GOST Source File * -* (C) 1999-2007 Jack Lloyd * -*************************************************/ - -#include <botan/gost.h> -#include <botan/loadstor.h> - -namespace Botan { - -/************************************************* -* GOST Encryption * -*************************************************/ -void GOST::enc(const byte in[], byte out[]) const - { - u32bit N1 = load_le<u32bit>(in, 0), N2 = load_le<u32bit>(in, 1); - - for(u32bit j = 0; j != 32; j += 2) - { - u32bit T0; - - T0 = N1 + EK[j]; - N2 ^= SBOX1[get_byte(0, T0)] | SBOX2[get_byte(1, T0)] | - SBOX3[get_byte(2, T0)] | SBOX4[get_byte(3, T0)]; - - T0 = N2 + EK[j+1]; - N1 ^= SBOX1[get_byte(0, T0)] | SBOX2[get_byte(1, T0)] | - SBOX3[get_byte(2, T0)] | SBOX4[get_byte(3, T0)]; - } - - store_le(out, N2, N1); - } - -/************************************************* -* GOST Decryption * -*************************************************/ -void GOST::dec(const byte in[], byte out[]) const - { - u32bit N1 = load_le<u32bit>(in, 0), N2 = load_le<u32bit>(in, 1); - - for(u32bit j = 0; j != 32; j += 2) - { - u32bit T0; - - T0 = N1 + EK[31-j]; - N2 ^= SBOX1[get_byte(0, T0)] | SBOX2[get_byte(1, T0)] | - SBOX3[get_byte(2, T0)] | SBOX4[get_byte(3, T0)]; - - T0 = N2 + EK[30-j]; - N1 ^= SBOX1[get_byte(0, T0)] | SBOX2[get_byte(1, T0)] | - SBOX3[get_byte(2, T0)] | SBOX4[get_byte(3, T0)]; - } - - store_le(out, N2, N1); - } - -/************************************************* -* GOST Key Schedule * -*************************************************/ -void GOST::key(const byte key[], u32bit) - { - for(u32bit j = 0; j != 8; ++j) - { - u32bit K = load_le<u32bit>(key, j); - EK[j] = EK[j+8] = EK[j+16] = K; - } - - for(u32bit j = 24; j != 32; ++j) - EK[j] = EK[7-(j-24)]; - } - -} |