DragonX/hush3
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Scrub privkeys from memory after done

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This commit is contained in:
jl777
2019-07-15 04:06:20 -11:00
parent 9ac1b1fea8
commit ab4619c98b
14 changed files with 119 additions and 44 deletions
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23
src/cc/gamescc.cpp
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@@ -411,7 +411,7 @@ UniValue games_rng(uint64_t txfee,struct CCcontract_info *cp,cJSON *params)
int32_t games_eventsign(uint32_t &timestamp,std::vector<uint8_t> &sig,std::vector<uint8_t> payload,CPubKey pk)
{
static secp256k1_context *ctx;
size_t siglen = 74; secp256k1_pubkey pubkey; secp256k1_ecdsa_signature signature; int32_t len,verifyflag = 1; uint8_t privkey[32]; uint256 hash; uint32_t t;
size_t siglen = 74; secp256k1_pubkey pubkey; secp256k1_ecdsa_signature signature; int32_t len,verifyflag = 1,retval=-100; uint8_t privkey[32]; uint256 hash; uint32_t t;
if ( ctx == 0 )
ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY);
if ( ctx != 0 )
@@ -439,10 +439,9 @@ int32_t games_eventsign(uint32_t &timestamp,std::vector<uint8_t> &sig,std::vecto
{
if ( siglen != sig.size() )
sig.resize(siglen);
return(0);
}
else return(-3);
} else return(-2);
retval = 0;
} else retval = -3;
} else retval = -2;
}
else
{
@@ -451,12 +450,14 @@ int32_t games_eventsign(uint32_t &timestamp,std::vector<uint8_t> &sig,std::vecto
if ( secp256k1_ecdsa_signature_parse_der(ctx,&signature,&sig[0],sig.size()) > 0 )
{
if ( secp256k1_ecdsa_verify(ctx,&signature,(uint8_t *)&hash,&pubkey) > 0 )
return(0);
else return(-4);
} else return(-3);
} else return(-2);
retval = 0;
else retval = -4;
} else retval = -3;
} else retval = -2;
}
} else return(-1);
} else retval = -1;
memset(privkey,0,sizeof(privkey));
return(retval);
}
int32_t games_event(uint32_t timestamp,uint256 gametxid,int32_t eventid,std::vector<uint8_t> payload)
@@ -1339,6 +1340,7 @@ UniValue games_keystrokes(uint64_t txfee,struct CCcontract_info *cp,cJSON *param
CCaddr1of2set(cp,gamespk,mypk,mypriv,destaddr);
rawtx = FinalizeCCTx(0,cp,mtx,mypk,txfee,games_keystrokesopret(gametxid,batontxid,mypk,keystrokes));
//fprintf(stderr,"KEYSTROKES.(%s)\n",rawtx.c_str());
memset(mypriv,0,sizeof(mypriv));
return(games_rawtxresult(result,rawtx,1));
} else return(cclib_error(result,"keystrokes tx was too late"));
} else return(cclib_error(result,"couldnt find batontxid"));
@@ -1612,6 +1614,7 @@ UniValue games_finish(uint64_t txfee,struct CCcontract_info *cp,cJSON *params,ch
GetOpReturnData(opret, vopretNonfungible);
rawtx = FinalizeCCTx(0, cp, mtx, mypk, txfee, EncodeTokenCreateOpRet('c', Mypubkey(), std::string(seedstr), gametxid.GetHex(), vopretNonfungible));
}
memset(mypriv,0,sizeof(mypriv));
return(games_rawtxresult(result,rawtx,1));
}
result.push_back(Pair("result","success"));