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chaincodes: abstract away more chaincode behavior

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[squashme] replace struct CCainCode with a typedef uint256 ChainCode
This commit is contained in:
Cory Fields
2015-04-21 18:09:37 -04:00
committed by Jonas Schnelli
parent 8cf1485f3b
commit a574899671
6 changed files with 25 additions and 53 deletions
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8
src/hash.cpp
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@@ -5,6 +5,7 @@
#include "hash.h"
#include "crypto/common.h"
#include "crypto/hmac_sha512.h"
#include "pubkey.h"
inline uint32_t ROTL32(uint32_t x, int8_t r)
@@ -71,15 +72,12 @@ unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char
return h1;
}
void BIP32Hash(const unsigned char chainCode[32], unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64])
void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64])
{
unsigned char num[4];
num[0] = (nChild >> 24) & 0xFF;
num[1] = (nChild >> 16) & 0xFF;
num[2] = (nChild >> 8) & 0xFF;
num[3] = (nChild >> 0) & 0xFF;
CHMAC_SHA512(chainCode, 32).Write(&header, 1)
.Write(data, 32)
.Write(num, 4)
.Finalize(output);
CHMAC_SHA512(chainCode.begin(), chainCode.size()).Write(&header, 1).Write(data, 32).Write(num, 4).Finalize(output);
}