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Code cleanup: use ECDSA_size() instead of fixed 10,000 byte sig buffer, and explicity init static var

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This commit is contained in:
Gavin Andresen
2011-12-19 19:04:47 -05:00
parent 26ce92b352
commit 9ef7fa3447
2 changed files with 8 additions and 7 deletions
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13
src/key.h
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@@ -178,13 +178,14 @@ public:
bool Sign(uint256 hash, std::vector<unsigned char>& vchSig)
{
vchSig.clear();
unsigned char pchSig[10000];
unsigned int nSize = 0;
if (!ECDSA_sign(0, (unsigned char*)&hash, sizeof(hash), pchSig, &nSize, pkey))
unsigned int nSize = ECDSA_size(pkey);
vchSig.resize(nSize); // Make sure it is big enough
if (!ECDSA_sign(0, (unsigned char*)&hash, sizeof(hash), &vchSig[0], &nSize, pkey))
{
vchSig.clear();
return false;
vchSig.resize(nSize);
memcpy(&vchSig[0], pchSig, nSize);
}
vchSig.resize(nSize); // Shrink to fit actual size
return true;
}