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Diffstat (limited to 'src/hash/tiger/tiger.cpp')
| -rw-r--r-- | src/hash/tiger/tiger.cpp | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/src/hash/tiger/tiger.cpp b/src/hash/tiger/tiger.cpp deleted file mode 100644 index 57250d6f5..000000000 --- a/src/hash/tiger/tiger.cpp +++ /dev/null @@ -1,187 +0,0 @@ -/* -* Tiger -* (C) 1999-2007 Jack Lloyd -* -* Distributed under the terms of the Botan license -*/ - -#include <botan/tiger.h> -#include <botan/exceptn.h> -#include <botan/loadstor.h> -#include <botan/parsing.h> - -namespace Botan { - -namespace { - -/* -* Tiger Mixing Function -*/ -inline void mix(secure_vector<u64bit>& X) - { - X[0] -= X[7] ^ 0xA5A5A5A5A5A5A5A5; - X[1] ^= X[0]; - X[2] += X[1]; - X[3] -= X[2] ^ ((~X[1]) << 19); - X[4] ^= X[3]; - X[5] += X[4]; - X[6] -= X[5] ^ ((~X[4]) >> 23); - X[7] ^= X[6]; - - X[0] += X[7]; - X[1] -= X[0] ^ ((~X[7]) << 19); - X[2] ^= X[1]; - X[3] += X[2]; - X[4] -= X[3] ^ ((~X[2]) >> 23); - X[5] ^= X[4]; - X[6] += X[5]; - X[7] -= X[6] ^ 0x0123456789ABCDEF; - } - -} - -/* -* Tiger Compression Function -*/ -void Tiger::compress_n(const byte input[], size_t blocks) - { - u64bit A = digest[0], B = digest[1], C = digest[2]; - - for(size_t i = 0; i != blocks; ++i) - { - load_le(&X[0], input, X.size()); - - pass(A, B, C, X, 5); mix(X); - pass(C, A, B, X, 7); mix(X); - pass(B, C, A, X, 9); - - for(size_t j = 3; j != passes; ++j) - { - mix(X); - pass(A, B, C, X, 9); - u64bit T = A; A = C; C = B; B = T; - } - - A = (digest[0] ^= A); - B = digest[1] = B - digest[1]; - C = (digest[2] += C); - - input += hash_block_size(); - } - } - -/* -* Copy out the digest -*/ -void Tiger::copy_out(byte output[]) - { - for(size_t i = 0; i != output_length(); ++i) - output[i] = get_byte(7 - (i % 8), digest[i/8]); - } - -/* -* Tiger Pass -*/ -void Tiger::pass(u64bit& A, u64bit& B, u64bit& C, - const secure_vector<u64bit>& X, - byte mul) - { - C ^= X[0]; - A -= SBOX1[get_byte(7, C)] ^ SBOX2[get_byte(5, C)] ^ - SBOX3[get_byte(3, C)] ^ SBOX4[get_byte(1, C)]; - B += SBOX1[get_byte(0, C)] ^ SBOX2[get_byte(2, C)] ^ - SBOX3[get_byte(4, C)] ^ SBOX4[get_byte(6, C)]; - B *= mul; - - A ^= X[1]; - B -= SBOX1[get_byte(7, A)] ^ SBOX2[get_byte(5, A)] ^ - SBOX3[get_byte(3, A)] ^ SBOX4[get_byte(1, A)]; - C += SBOX1[get_byte(0, A)] ^ SBOX2[get_byte(2, A)] ^ - SBOX3[get_byte(4, A)] ^ SBOX4[get_byte(6, A)]; - C *= mul; - - B ^= X[2]; - C -= SBOX1[get_byte(7, B)] ^ SBOX2[get_byte(5, B)] ^ - SBOX3[get_byte(3, B)] ^ SBOX4[get_byte(1, B)]; - A += SBOX1[get_byte(0, B)] ^ SBOX2[get_byte(2, B)] ^ - SBOX3[get_byte(4, B)] ^ SBOX4[get_byte(6, B)]; - A *= mul; - - C ^= X[3]; - A -= SBOX1[get_byte(7, C)] ^ SBOX2[get_byte(5, C)] ^ - SBOX3[get_byte(3, C)] ^ SBOX4[get_byte(1, C)]; - B += SBOX1[get_byte(0, C)] ^ SBOX2[get_byte(2, C)] ^ - SBOX3[get_byte(4, C)] ^ SBOX4[get_byte(6, C)]; - B *= mul; - - A ^= X[4]; - B -= SBOX1[get_byte(7, A)] ^ SBOX2[get_byte(5, A)] ^ - SBOX3[get_byte(3, A)] ^ SBOX4[get_byte(1, A)]; - C += SBOX1[get_byte(0, A)] ^ SBOX2[get_byte(2, A)] ^ - SBOX3[get_byte(4, A)] ^ SBOX4[get_byte(6, A)]; - C *= mul; - - B ^= X[5]; - C -= SBOX1[get_byte(7, B)] ^ SBOX2[get_byte(5, B)] ^ - SBOX3[get_byte(3, B)] ^ SBOX4[get_byte(1, B)]; - A += SBOX1[get_byte(0, B)] ^ SBOX2[get_byte(2, B)] ^ - SBOX3[get_byte(4, B)] ^ SBOX4[get_byte(6, B)]; - A *= mul; - - C ^= X[6]; - A -= SBOX1[get_byte(7, C)] ^ SBOX2[get_byte(5, C)] ^ - SBOX3[get_byte(3, C)] ^ SBOX4[get_byte(1, C)]; - B += SBOX1[get_byte(0, C)] ^ SBOX2[get_byte(2, C)] ^ - SBOX3[get_byte(4, C)] ^ SBOX4[get_byte(6, C)]; - B *= mul; - - A ^= X[7]; - B -= SBOX1[get_byte(7, A)] ^ SBOX2[get_byte(5, A)] ^ - SBOX3[get_byte(3, A)] ^ SBOX4[get_byte(1, A)]; - C += SBOX1[get_byte(0, A)] ^ SBOX2[get_byte(2, A)] ^ - SBOX3[get_byte(4, A)] ^ SBOX4[get_byte(6, A)]; - C *= mul; - } - -/* -* Clear memory of sensitive data -*/ -void Tiger::clear() - { - MDx_HashFunction::clear(); - zeroise(X); - digest[0] = 0x0123456789ABCDEF; - digest[1] = 0xFEDCBA9876543210; - digest[2] = 0xF096A5B4C3B2E187; - } - -/* -* Return the name of this type -*/ -std::string Tiger::name() const - { - return "Tiger(" + std::to_string(output_length()) + "," + - std::to_string(passes) + ")"; - } - -/* -* Tiger Constructor -*/ -Tiger::Tiger(size_t hash_len, size_t passes) : - MDx_HashFunction(64, false, false), - X(8), - digest(3), - hash_len(hash_len), - passes(passes) - { - if(output_length() != 16 && output_length() != 20 && output_length() != 24) - throw Invalid_Argument("Tiger: Illegal hash output size: " + - std::to_string(output_length())); - - if(passes < 3) - throw Invalid_Argument("Tiger: Invalid number of passes: " - + std::to_string(passes)); - clear(); - } - -} |