diff options
Diffstat (limited to 'src/pubkey.h')
-rw-r--r-- | src/pubkey.h | 60 |
1 files changed, 52 insertions, 8 deletions
diff --git a/src/pubkey.h b/src/pubkey.h index 37351cff0e..db5444ea9d 100644 --- a/src/pubkey.h +++ b/src/pubkey.h @@ -1,5 +1,5 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto -// Copyright (c) 2009-2014 The Bitcoin developers +// Copyright (c) 2009-2015 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. @@ -23,14 +23,18 @@ * script supports up to 75 for single byte push */ +const unsigned int BIP32_EXTKEY_SIZE = 74; + /** A reference to a CKey: the Hash160 of its serialized public key */ class CKeyID : public uint160 { public: - CKeyID() : uint160(0) {} + CKeyID() : uint160() {} CKeyID(const uint160& in) : uint160(in) {} }; +typedef uint256 ChainCode; + /** An encapsulated public key. */ class CPubKey { @@ -175,6 +179,11 @@ public: */ bool Verify(const uint256& hash, const std::vector<unsigned char>& vchSig) const; + /** + * Check whether a signature is normalized (lower-S). + */ + static bool CheckLowS(const std::vector<unsigned char>& vchSig); + //! Recover a public key from a compact signature. bool RecoverCompact(const uint256& hash, const std::vector<unsigned char>& vchSig); @@ -182,25 +191,60 @@ public: bool Decompress(); //! Derive BIP32 child pubkey. - bool Derive(CPubKey& pubkeyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const; + bool Derive(CPubKey& pubkeyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode& cc) const; }; struct CExtPubKey { unsigned char nDepth; unsigned char vchFingerprint[4]; unsigned int nChild; - unsigned char vchChainCode[32]; + ChainCode chaincode; CPubKey pubkey; - friend bool operator==(const CExtPubKey& a, const CExtPubKey& b) + 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; + a.chaincode == b.chaincode && a.pubkey == b.pubkey; } - void Encode(unsigned char code[74]) const; - void Decode(const unsigned char code[74]); + void Encode(unsigned char code[BIP32_EXTKEY_SIZE]) const; + void Decode(const unsigned char code[BIP32_EXTKEY_SIZE]); bool Derive(CExtPubKey& out, unsigned int nChild) const; + + unsigned int GetSerializeSize(int nType, int nVersion) const + { + return BIP32_EXTKEY_SIZE+1; //add one byte for the size (compact int) + } + template <typename Stream> + void Serialize(Stream& s, int nType, int nVersion) const + { + unsigned int len = BIP32_EXTKEY_SIZE; + ::WriteCompactSize(s, len); + unsigned char code[BIP32_EXTKEY_SIZE]; + Encode(code); + s.write((const char *)&code[0], len); + } + template <typename Stream> + void Unserialize(Stream& s, int nType, int nVersion) + { + unsigned int len = ::ReadCompactSize(s); + unsigned char code[BIP32_EXTKEY_SIZE]; + if (len != BIP32_EXTKEY_SIZE) + throw std::runtime_error("Invalid extended key size\n"); + s.read((char *)&code[0], len); + Decode(code); + } +}; + +/** Users of this module must hold an ECCVerifyHandle. The constructor and + * destructor of these are not allowed to run in parallel, though. */ +class ECCVerifyHandle +{ + static int refcount; + +public: + ECCVerifyHandle(); + ~ECCVerifyHandle(); }; #endif // BITCOIN_PUBKEY_H |