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author | Gavin Andresen <gavinandresen@gmail.com> | 2013-08-15 16:40:03 -0700 |
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committer | Gavin Andresen <gavinandresen@gmail.com> | 2013-08-15 16:40:03 -0700 |
commit | 13d3b1c144756dfe31792209d09f5205f55f95bb (patch) | |
tree | f65ecbd27fc74735d1a1016e3c923e39d7b1590a /src/key.h | |
parent | 4323bfeafda4a5e0101710d94b518d41819a2325 (diff) | |
parent | a59db19ee3b454680b3bb0aa881e601b9311a9ae (diff) | |
download | bitcoin-13d3b1c144756dfe31792209d09f5205f55f95bb.tar.xz |
Merge pull request #2829 from sipa/bip32
BIP 32 derivation + test vectors
Diffstat (limited to 'src/key.h')
-rw-r--r-- | src/key.h | 46 |
1 files changed, 46 insertions, 0 deletions
@@ -161,6 +161,9 @@ public: // Turn this public key into an uncompressed public key. bool Decompress(); + + // Derive BIP32 child pubkey. + bool Derive(CPubKey& pubkeyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const; }; @@ -201,6 +204,10 @@ public: UnlockObject(vch); } + friend bool operator==(const CKey &a, const CKey &b) { + return a.fCompressed == b.fCompressed && memcmp(&a.vch[0], &b.vch[0], 32); + } + // Initialize using begin and end iterators to byte data. template<typename T> void Set(const T pbegin, const T pend, bool fCompressedIn) { @@ -251,6 +258,45 @@ public: // 0x1D = second key with even y, 0x1E = second key with odd y, // add 0x04 for compressed keys. bool SignCompact(const uint256 &hash, std::vector<unsigned char>& vchSig) const; + + // Derive BIP32 child key. + bool Derive(CKey& keyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const; +}; + +struct CExtPubKey { + unsigned char nDepth; + unsigned char vchFingerprint[4]; + unsigned int nChild; + unsigned char vchChainCode[32]; + CPubKey pubkey; + + friend bool operator==(const CExtPubKey &a, const CExtPubKey &b) { + return a.nDepth == b.nDepth && memcmp(&a.vchFingerprint[0], &b.vchFingerprint[0], 4) == 0 && a.nChild == b.nChild && + memcmp(&a.vchChainCode[0], &b.vchChainCode[0], 32) == 0 && a.pubkey == b.pubkey; + } + + void Encode(unsigned char code[74]) const; + void Decode(const unsigned char code[74]); + bool Derive(CExtPubKey &out, unsigned int nChild) const; +}; + +struct CExtKey { + unsigned char nDepth; + unsigned char vchFingerprint[4]; + unsigned int nChild; + unsigned char vchChainCode[32]; + CKey key; + + friend bool operator==(const CExtKey &a, const CExtKey &b) { + return a.nDepth == b.nDepth && memcmp(&a.vchFingerprint[0], &b.vchFingerprint[0], 4) == 0 && a.nChild == b.nChild && + memcmp(&a.vchChainCode[0], &b.vchChainCode[0], 32) == 0 && a.key == b.key; + } + + void Encode(unsigned char code[74]) const; + void Decode(const unsigned char code[74]); + bool Derive(CExtKey &out, unsigned int nChild) const; + CExtPubKey Neuter() const; + void SetMaster(const unsigned char *seed, unsigned int nSeedLen); }; #endif |