LCOV - code coverage report
Current view: top level - src - pubkey.cpp (source / functions) Hit Total Coverage
Test: total_coverage.info Lines: 61 61 100.0 %
Date: 2015-10-12 22:39:14 Functions: 8 8 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : // Copyright (c) 2009-2014 The Bitcoin Core developers
       2             : // Distributed under the MIT software license, see the accompanying
       3             : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4             : 
       5             : #include "pubkey.h"
       6             : 
       7             : #include "eccryptoverify.h"
       8             : 
       9             : #include "ecwrapper.h"
      10             : 
      11        4317 : bool CPubKey::Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) const {
      12        4317 :     if (!IsValid())
      13             :         return false;
      14        4317 :     CECKey key;
      15       12951 :     if (!key.SetPubKey(begin(), size()))
      16             :         return false;
      17        4317 :     if (!key.Verify(hash, vchSig))
      18             :         return false;
      19        4026 :     return true;
      20             : }
      21             : 
      22          67 : bool CPubKey::RecoverCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig) {
      23         134 :     if (vchSig.size() != 65)
      24             :         return false;
      25          67 :     int recid = (vchSig[0] - 27) & 3;
      26          67 :     bool fComp = ((vchSig[0] - 27) & 4) != 0;
      27          67 :     CECKey key;
      28         134 :     if (!key.Recover(hash, &vchSig[1], recid))
      29             :         return false;
      30             :     std::vector<unsigned char> pubkey;
      31          67 :     key.GetPubKey(pubkey, fComp);
      32          67 :     Set(pubkey.begin(), pubkey.end());
      33         134 :     return true;
      34             : }
      35             : 
      36         272 : bool CPubKey::IsFullyValid() const {
      37         272 :     if (!IsValid())
      38             :         return false;
      39         272 :     CECKey key;
      40         816 :     if (!key.SetPubKey(begin(), size()))
      41             :         return false;
      42         272 :     return true;
      43             : }
      44             : 
      45           7 : bool CPubKey::Decompress() {
      46           7 :     if (!IsValid())
      47             :         return false;
      48           7 :     CECKey key;
      49          21 :     if (!key.SetPubKey(begin(), size()))
      50             :         return false;
      51             :     std::vector<unsigned char> pubkey;
      52           7 :     key.GetPubKey(pubkey, false);
      53           7 :     Set(pubkey.begin(), pubkey.end());
      54          14 :     return true;
      55             : }
      56             : 
      57           8 : bool CPubKey::Derive(CPubKey& pubkeyChild, ChainCode &ccChild, unsigned int nChild, const ChainCode& cc) const {
      58           8 :     assert(IsValid());
      59           8 :     assert((nChild >> 31) == 0);
      60          16 :     assert(begin() + 33 == end());
      61             :     unsigned char out[64];
      62           8 :     BIP32Hash(cc, nChild, *begin(), begin()+1, out);
      63          16 :     memcpy(ccChild.begin(), out+32, 32);
      64           8 :     CECKey key;
      65          24 :     bool ret = key.SetPubKey(begin(), size());
      66           8 :     ret &= key.TweakPublic(out);
      67             :     std::vector<unsigned char> pubkey;
      68           8 :     key.GetPubKey(pubkey, true);
      69           8 :     pubkeyChild.Set(pubkey.begin(), pubkey.end());
      70          16 :     return ret;
      71             : }
      72             : 
      73          24 : void CExtPubKey::Encode(unsigned char code[74]) const {
      74          24 :     code[0] = nDepth;
      75          24 :     memcpy(code+1, vchFingerprint, 4);
      76          24 :     code[5] = (nChild >> 24) & 0xFF; code[6] = (nChild >> 16) & 0xFF;
      77          24 :     code[7] = (nChild >>  8) & 0xFF; code[8] = (nChild >>  0) & 0xFF;
      78          48 :     memcpy(code+9, chaincode.begin(), 32);
      79          48 :     assert(pubkey.size() == 33);
      80          48 :     memcpy(code+41, pubkey.begin(), 33);
      81          24 : }
      82             : 
      83          12 : void CExtPubKey::Decode(const unsigned char code[74]) {
      84          12 :     nDepth = code[0];
      85          12 :     memcpy(vchFingerprint, code+1, 4);
      86          12 :     nChild = (code[5] << 24) | (code[6] << 16) | (code[7] << 8) | code[8];
      87          24 :     memcpy(chaincode.begin(), code+9, 32);
      88          12 :     pubkey.Set(code+41, code+74);
      89          12 : }
      90             : 
      91           8 : bool CExtPubKey::Derive(CExtPubKey &out, unsigned int nChild) const {
      92           8 :     out.nDepth = nDepth + 1;
      93           8 :     CKeyID id = pubkey.GetID();
      94           8 :     memcpy(&out.vchFingerprint[0], &id, 4);
      95           8 :     out.nChild = nChild;
      96           8 :     return pubkey.Derive(out.pubkey, out.chaincode, nChild, chaincode);
      97             : }

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