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Add SHA256Uint256 helper functions

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This commit is contained in:
Jeremy Rubin 2020-02-05 11:57:32 -08:00
parent b475d7d0fa
commit 6510d0ff41
2 changed files with 11 additions and 0 deletions
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7
src/hash.cpp
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@ -77,3 +77,10 @@ void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char he
num[3] = (nChild >> 0) & 0xFF;
CHMAC_SHA512(chainCode.begin(), chainCode.size()).Write(&header, 1).Write(data, 32).Write(num, 4).Finalize(output);
}
uint256 SHA256Uint256(const uint256& input)
{
uint256 result;
CSHA256().Write(input.begin(), 32).Finalize(result.begin());
return result;
}

4
src/hash.h
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@ -6,6 +6,7 @@
#ifndef BITCOIN_HASH_H
#define BITCOIN_HASH_H
#include <attributes.h>
#include <crypto/common.h>
#include <crypto/ripemd160.h>
#include <crypto/sha256.h>
@ -194,6 +195,9 @@ uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL
return ss.GetHash();
}
/** Single-SHA256 a 32-byte input (represented as uint256). */
NODISCARD uint256 SHA256Uint256(const uint256& input);
unsigned int MurmurHash3(unsigned int nHashSeed, Span<const unsigned char> vDataToHash);
void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64]);