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96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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Copyright (c) 2011-2013, OpenCoin, Inc.
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*/
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//==============================================================================
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#ifndef RIPPLE_HASHUTILITIES_H
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#define RIPPLE_HASHUTILITIES_H
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// VFALCO NOTE these came from BitcoinUtil.h
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// VFALCO TODO Rewrite the callers so we don't need templates,
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// then define these in a .cpp so they are no longer inline.
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//
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template<typename T1>
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inline uint256 SHA256Hash (const T1 pbegin, const T1 pend)
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{
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static unsigned char pblank[1];
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uint256 hash1;
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SHA256 ((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof (pbegin[0]), (unsigned char*)&hash1);
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uint256 hash2;
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SHA256 ((unsigned char*)&hash1, sizeof (hash1), (unsigned char*)&hash2);
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return hash2;
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}
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template<typename T1, typename T2>
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inline uint256 SHA256Hash (const T1 p1begin, const T1 p1end,
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const T2 p2begin, const T2 p2end)
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{
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static unsigned char pblank[1];
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uint256 hash1;
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SHA256_CTX ctx;
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SHA256_Init (&ctx);
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SHA256_Update (&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof (p1begin[0]));
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SHA256_Update (&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof (p2begin[0]));
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SHA256_Final ((unsigned char*)&hash1, &ctx);
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uint256 hash2;
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SHA256 ((unsigned char*)&hash1, sizeof (hash1), (unsigned char*)&hash2);
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return hash2;
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}
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template<typename T1, typename T2, typename T3>
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inline uint256 SHA256Hash (const T1 p1begin, const T1 p1end,
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const T2 p2begin, const T2 p2end,
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const T3 p3begin, const T3 p3end)
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{
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static unsigned char pblank[1];
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uint256 hash1;
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SHA256_CTX ctx;
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SHA256_Init (&ctx);
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SHA256_Update (&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof (p1begin[0]));
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SHA256_Update (&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof (p2begin[0]));
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SHA256_Update (&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof (p3begin[0]));
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SHA256_Final ((unsigned char*)&hash1, &ctx);
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uint256 hash2;
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SHA256 ((unsigned char*)&hash1, sizeof (hash1), (unsigned char*)&hash2);
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return hash2;
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}
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inline uint160 Hash160 (Blob const& vch)
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{
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uint256 hash1;
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SHA256 (&vch[0], vch.size (), (unsigned char*)&hash1);
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uint160 hash2;
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RIPEMD160 ((unsigned char*)&hash1, sizeof (hash1), (unsigned char*)&hash2);
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return hash2;
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}
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/*
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#ifdef WIN32
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// This is used to attempt to keep keying material out of swap
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// Note that VirtualLock does not provide this as a guarantee on Windows,
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// but, in practice, memory that has been VirtualLock'd almost never gets written to
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// the pagefile except in rare circumstances where memory is extremely low.
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#include <windows.h>
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#define mlock(p, n) VirtualLock((p), (n));
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#define munlock(p, n) VirtualUnlock((p), (n));
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#else
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#include <sys/mman.h>
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#include <limits.h>
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// This comes from limits.h if it's not defined there set a sane default
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#ifndef PAGESIZE
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#include <unistd.h>
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#define PAGESIZE sysconf(_SC_PAGESIZE)
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#endif
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#define mlock(a,b) \
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mlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
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(((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
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#define munlock(a,b) \
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munlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
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(((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
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#endif
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*/
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#endif
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