diff options
author | Jack Lloyd <[email protected]> | 2015-10-27 16:46:43 -0400 |
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committer | Jack Lloyd <[email protected]> | 2015-10-27 16:46:43 -0400 |
commit | 2844690385ba5b561f7e3bb1ba579409fe47a5ab (patch) | |
tree | 2d0e245760d974b9a1a0e969b5e96fe1267bbb82 /src/lib/utils/xor_buf.h | |
parent | a38d045acf208390b04c03f6473783e71be93168 (diff) |
Remove unused xor_buf.h (internal header merged into mem_ops.h)
Diffstat (limited to 'src/lib/utils/xor_buf.h')
-rw-r--r-- | src/lib/utils/xor_buf.h | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/src/lib/utils/xor_buf.h b/src/lib/utils/xor_buf.h deleted file mode 100644 index 23151f72e..000000000 --- a/src/lib/utils/xor_buf.h +++ /dev/null @@ -1,144 +0,0 @@ -/* -* XOR operations -* (C) 1999-2008 Jack Lloyd -* -* Botan is released under the Simplified BSD License (see license.txt) -*/ - -#ifndef BOTAN_XOR_BUF_H__ -#define BOTAN_XOR_BUF_H__ - -#include <botan/types.h> -#include <vector> - -namespace Botan { - -/** -* XOR arrays. Postcondition out[i] = in[i] ^ out[i] forall i = 0...length -* @param out the input/output buffer -* @param in the read-only input buffer -* @param length the length of the buffers -*/ -template<typename T> -void xor_buf(T out[], const T in[], size_t length) - { - while(length >= 8) - { - out[0] ^= in[0]; out[1] ^= in[1]; - out[2] ^= in[2]; out[3] ^= in[3]; - out[4] ^= in[4]; out[5] ^= in[5]; - out[6] ^= in[6]; out[7] ^= in[7]; - - out += 8; in += 8; length -= 8; - } - - for(size_t i = 0; i != length; ++i) - out[i] ^= in[i]; - } - -/** -* XOR arrays. Postcondition out[i] = in[i] ^ in2[i] forall i = 0...length -* @param out the output buffer -* @param in the first input buffer -* @param in2 the second output buffer -* @param length the length of the three buffers -*/ -template<typename T> void xor_buf(T out[], - const T in[], - const T in2[], - size_t length) - { - while(length >= 8) - { - out[0] = in[0] ^ in2[0]; - out[1] = in[1] ^ in2[1]; - out[2] = in[2] ^ in2[2]; - out[3] = in[3] ^ in2[3]; - out[4] = in[4] ^ in2[4]; - out[5] = in[5] ^ in2[5]; - out[6] = in[6] ^ in2[6]; - out[7] = in[7] ^ in2[7]; - - in += 8; in2 += 8; out += 8; length -= 8; - } - - for(size_t i = 0; i != length; ++i) - out[i] = in[i] ^ in2[i]; - } - -#if BOTAN_TARGET_UNALIGNED_MEMORY_ACCESS_OK - -template<> -inline void xor_buf<byte>(byte out[], const byte in[], size_t length) - { - while(length >= 8) - { - *reinterpret_cast<u64bit*>(out) ^= *reinterpret_cast<const u64bit*>(in); - out += 8; in += 8; length -= 8; - } - - for(size_t i = 0; i != length; ++i) - out[i] ^= in[i]; - } - -template<> -inline void xor_buf<byte>(byte out[], - const byte in[], - const byte in2[], - size_t length) - { - while(length >= 8) - { - *reinterpret_cast<u64bit*>(out) = - *reinterpret_cast<const u64bit*>(in) ^ - *reinterpret_cast<const u64bit*>(in2); - - in += 8; in2 += 8; out += 8; length -= 8; - } - - for(size_t i = 0; i != length; ++i) - out[i] = in[i] ^ in2[i]; - } - -#endif - -template<typename Alloc, typename Alloc2> -void xor_buf(std::vector<byte, Alloc>& out, - const std::vector<byte, Alloc2>& in, - size_t n) - { - xor_buf(out.data(), in.data(), n); - } - -template<typename Alloc> -void xor_buf(std::vector<byte, Alloc>& out, - const byte* in, - size_t n) - { - xor_buf(out.data(), in, n); - } - -template<typename Alloc, typename Alloc2> -void xor_buf(std::vector<byte, Alloc>& out, - const byte* in, - const std::vector<byte, Alloc2>& in2, - size_t n) - { - xor_buf(out.data(), in, in2.data(), n); - } - -template<typename T, typename Alloc, typename Alloc2> -std::vector<T, Alloc>& -operator^=(std::vector<T, Alloc>& out, - const std::vector<T, Alloc2>& in) - { - if(out.size() < in.size()) - out.resize(in.size()); - - xor_buf(out.data(), in.data(), in.size()); - return out; - } - -} - -#endif |