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Fix subscript[0] potential bugs in key.cpp

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This commit is contained in:
Jeremy Rubin 2017-02-19 13:35:49 -05:00
parent 4b1c0f2e2e
commit 30ac7688e3
1 changed files with 5 additions and 5 deletions
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10
src/key.cpp
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@ -138,7 +138,7 @@ CPrivKey CKey::GetPrivKey() const {
size_t privkeylen; size_t privkeylen;
privkey.resize(279); privkey.resize(279);
privkeylen = 279; privkeylen = 279;
ret = ec_privkey_export_der(secp256k1_context_sign, (unsigned char*)&privkey[0], &privkeylen, begin(), fCompressed ? SECP256K1_EC_COMPRESSED : SECP256K1_EC_UNCOMPRESSED); ret = ec_privkey_export_der(secp256k1_context_sign, (unsigned char*) privkey.data(), &privkeylen, begin(), fCompressed ? SECP256K1_EC_COMPRESSED : SECP256K1_EC_UNCOMPRESSED);
assert(ret); assert(ret);
privkey.resize(privkeylen); privkey.resize(privkeylen);
return privkey; return privkey;
@ -167,7 +167,7 @@ bool CKey::Sign(const uint256 &hash, std::vector<unsigned char>& vchSig, uint32_
secp256k1_ecdsa_signature sig; secp256k1_ecdsa_signature sig;
int ret = secp256k1_ecdsa_sign(secp256k1_context_sign, &sig, hash.begin(), begin(), secp256k1_nonce_function_rfc6979, test_case ? extra_entropy : NULL); int ret = secp256k1_ecdsa_sign(secp256k1_context_sign, &sig, hash.begin(), begin(), secp256k1_nonce_function_rfc6979, test_case ? extra_entropy : NULL);
assert(ret); assert(ret);
secp256k1_ecdsa_signature_serialize_der(secp256k1_context_sign, (unsigned char*)&vchSig[0], &nSigLen, &sig); secp256k1_ecdsa_signature_serialize_der(secp256k1_context_sign, (unsigned char*)vchSig.data(), &nSigLen, &sig);
vchSig.resize(nSigLen); vchSig.resize(nSigLen);
return true; return true;
} }
@ -202,7 +202,7 @@ bool CKey::SignCompact(const uint256 &hash, std::vector<unsigned char>& vchSig)
} }
bool CKey::Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck=false) { bool CKey::Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck=false) {
if (!ec_privkey_import_der(secp256k1_context_sign, (unsigned char*)begin(), &privkey[0], privkey.size())) if (!ec_privkey_import_der(secp256k1_context_sign, (unsigned char*)begin(), privkey.data(), privkey.size()))
return false; return false;
fCompressed = vchPubKey.IsCompressed(); fCompressed = vchPubKey.IsCompressed();
fValid = true; fValid = true;
@ -245,8 +245,8 @@ void CExtKey::SetMaster(const unsigned char *seed, unsigned int nSeedLen) {
static const unsigned char hashkey[] = {'B','i','t','c','o','i','n',' ','s','e','e','d'}; static const unsigned char hashkey[] = {'B','i','t','c','o','i','n',' ','s','e','e','d'};
std::vector<unsigned char, secure_allocator<unsigned char>> vout(64); std::vector<unsigned char, secure_allocator<unsigned char>> vout(64);
CHMAC_SHA512(hashkey, sizeof(hashkey)).Write(seed, nSeedLen).Finalize(vout.data()); CHMAC_SHA512(hashkey, sizeof(hashkey)).Write(seed, nSeedLen).Finalize(vout.data());
key.Set(&vout[0], &vout[32], true); key.Set(vout.data(), vout.data() + 32, true);
memcpy(chaincode.begin(), &vout[32], 32); memcpy(chaincode.begin(), vout.data() + 32, 32);
nDepth = 0; nDepth = 0;
nChild = 0; nChild = 0;
memset(vchFingerprint, 0, sizeof(vchFingerprint)); memset(vchFingerprint, 0, sizeof(vchFingerprint));