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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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10
src/pubkey.cpp
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@@ -54,13 +54,13 @@ bool CPubKey::Decompress() {
return true;
}
bool CPubKey::Derive(CPubKey& pubkeyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const {
bool CPubKey::Derive(CPubKey& pubkeyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode& cc) const {
assert(IsValid());
assert((nChild >> 31) == 0);
assert(begin() + 33 == end());
unsigned char out[64];
BIP32Hash(cc, nChild, *begin(), begin()+1, out);
memcpy(ccChild, out+32, 32);
memcpy(ccChild.begin(), out+32, 32);
CECKey key;
bool ret = key.SetPubKey(begin(), size());
ret &= key.TweakPublic(out);
@@ -75,7 +75,7 @@ void CExtPubKey::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);
assert(pubkey.size() == 33);
memcpy(code+41, pubkey.begin(), 33);
}
@@ -84,7 +84,7 @@ void CExtPubKey::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);
pubkey.Set(code+41, code+74);
}
@@ -93,5 +93,5 @@ bool CExtPubKey::Derive(CExtPubKey &out, unsigned int nChild) const {
CKeyID id = pubkey.GetID();
memcpy(&out.vchFingerprint[0], &id, 4);
out.nChild = nChild;
return pubkey.Derive(out.pubkey, out.chaincode.data, nChild, chaincode.data);
return pubkey.Derive(out.pubkey, out.chaincode, nChild, chaincode);
}