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Add sha512Half and SHA512HashHasher:

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These routines replace existing code to compute SHA512-Half hashes.
The new code accumulates serialized data into a hashing context
instead of allocating a buffer, for improved performance.
This commit is contained in:
Vinnie Falco
2015-05-27 09:27:35 -07:00
parent 06823349f9
commit c25184cc88
25 changed files with 357 additions and 323 deletions
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36
src/ripple/protocol/impl/Serializer.cpp
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@@ -19,9 +19,8 @@
#include <BeastConfig.h>
#include <ripple/basics/Log.h>
#include <ripple/basics/SHA512Half.h>
#include <ripple/protocol/Serializer.h>
#include <openssl/ripemd.h>
#include <openssl/pem.h>
namespace ripple {
@@ -298,25 +297,7 @@ Blob Serializer::getRaw (int offset, int length) const
uint256 Serializer::getSHA512Half () const
{
return ripple::getSHA512Half (mData);
}
uint256 Serializer::getPrefixHash (std::uint32_t prefix, const unsigned char* data, int len)
{
char be_prefix[4];
be_prefix[0] = static_cast<unsigned char> (prefix >> 24);
be_prefix[1] = static_cast<unsigned char> ((prefix >> 16) & 0xff);
be_prefix[2] = static_cast<unsigned char> ((prefix >> 8) & 0xff);
be_prefix[3] = static_cast<unsigned char> (prefix & 0xff);
uint256 j[2];
SHA512_CTX ctx;
SHA512_Init (&ctx);
SHA512_Update (&ctx, &be_prefix[0], 4);
SHA512_Update (&ctx, data, len);
SHA512_Final (reinterpret_cast<unsigned char*> (&j[0]), &ctx);
return j[0];
return sha512Half(make_Slice(mData));
}
int Serializer::addVL (Blob const& vector)
@@ -674,17 +655,4 @@ SerialIter::getVLBuffer()
return getRawHelper<Buffer> (getVLDataLength ());
}
//------------------------------------------------------------------------------
uint256
getSHA512Half (void const* data, int len)
{
uint256 j[2];
SHA512 (
reinterpret_cast<unsigned char const*>(
data), len, (unsigned char*) j);
return j[0];
}
} // ripple