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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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14
src/key.cpp
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@@ -125,7 +125,7 @@ bool CKey::Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck=false) {
return VerifyPubKey(vchPubKey);
}
bool CKey::Derive(CKey& keyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const {
bool CKey::Derive(CKey& keyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode& cc) const {
assert(IsValid());
assert(IsCompressed());
unsigned char out[64];
@@ -138,7 +138,7 @@ bool CKey::Derive(CKey& keyChild, unsigned char ccChild[32], unsigned int nChild
assert(begin() + 32 == end());
BIP32Hash(cc, nChild, 0, begin(), out);
}
memcpy(ccChild, out+32, 32);
memcpy(ccChild.begin(), out+32, 32);
memcpy((unsigned char*)keyChild.begin(), begin(), 32);
bool ret = secp256k1_ec_privkey_tweak_add((unsigned char*)keyChild.begin(), out);
UnlockObject(out);
@@ -152,7 +152,7 @@ bool CExtKey::Derive(CExtKey &out, unsigned int nChild) const {
CKeyID id = key.GetPubKey().GetID();
memcpy(&out.vchFingerprint[0], &id, 4);
out.nChild = nChild;
return key.Derive(out.key, out.chaincode.data, nChild, chaincode.data);
return key.Derive(out.key, out.chaincode, nChild, chaincode);
}
void CExtKey::SetMaster(const unsigned char *seed, unsigned int nSeedLen) {
@@ -161,7 +161,7 @@ void CExtKey::SetMaster(const unsigned char *seed, unsigned int nSeedLen) {
LockObject(out);
CHMAC_SHA512(hashkey, sizeof(hashkey)).Write(seed, nSeedLen).Finalize(out);
key.Set(&out[0], &out[32], true);
memcpy(chaincode.data, &out[32], 32);
memcpy(chaincode.begin(), &out[32], 32);
UnlockObject(out);
nDepth = 0;
nChild = 0;
@@ -174,7 +174,7 @@ CExtPubKey CExtKey::Neuter() const {
memcpy(&ret.vchFingerprint[0], &vchFingerprint[0], 4);
ret.nChild = nChild;
ret.pubkey = key.GetPubKey();
memcpy(&ret.chaincode.data[0], &chaincode.data[0], 32);
ret.chaincode = chaincode;
return ret;
}
@@ -183,7 +183,7 @@ void CExtKey::Encode(unsigned char code[74]) const {
memcpy(code+1, vchFingerprint, 4);
code[5] = (nChild >> 24) & 0xFF; code[6] = (nChild >> 16) & 0xFF;
code[7] = (nChild >> 8) & 0xFF; code[8] = (nChild >> 0) & 0xFF;
memcpy(code+9, chaincode.data, 32);
memcpy(code+9, chaincode.begin(), 32);
code[41] = 0;
assert(key.size() == 32);
memcpy(code+42, key.begin(), 32);
@@ -193,7 +193,7 @@ void CExtKey::Decode(const unsigned char code[74]) {
nDepth = code[0];
memcpy(vchFingerprint, code+1, 4);
nChild = (code[5] << 24) | (code[6] << 16) | (code[7] << 8) | code[8];
memcpy(chaincode.data, code+9, 32);
memcpy(chaincode.begin(), code+9, 32);
key.Set(code+42, code+74, true);
}