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Qvalidate

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This commit is contained in:
jl777
2019-02-25 04:50:40 -11:00
parent 3ac0038a15
commit d17312f526
1 changed files with 102 additions and 4 deletions
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106
src/cc/dilithium.c
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@@ -2915,6 +2915,30 @@ int32_t main(void)
void calc_rmd160_sha256(uint8_t rmd160[20],uint8_t *data,int32_t datalen);
char *bitcoin_address(char *coinaddr,uint8_t addrtype,uint8_t *pubkey_or_rmd160,int32_t len);
int32_t dilithium_Qmsghash(uint8_t *msg,CTransaction tx,std::vector<uint256> voutpubtxids)
{
CScript data; uint256 hash; int32_t i,numvins,numvouts,len = 0; std::vector<uint256> vintxids; std::vector<int64_t> nValues; std::vector<int32_t> vinprevns; std::vector<CScript> scriptPubKeys;
numvins = tx.vin.size();
numvouts = tx.vout.size();
if ( tx.vout[numvouts-1].scriptPubKey[0] == 0x6a )
{
for (i=0; i<numvins; i++)
{
vintxids.push_back(tx.vin[i].prevout.hash);
vinprevns.push_back(tx.vin[i].prevout.n);
}
for (i=0; i<numvouts-1; i++)
{
nValues.push_pack(tx.vout[i].nValue);
scriptPubKeys.push_pack(tx.vout[i].scriptPubKey);
}
data << E_MARSHAL(ss << vintxids << vinprevns << nValues << scriptPubKeys << voutpubtxids);
hash = Hash(data.begin(),data.end());
memcpy(msg,&hash,sizeof(hash));
return(0);
} else return(-1);
}
CScript dilithium_registeropret(std::string handle,CPubKey pk,std::vector<uint8_t> bigpub)
{
CScript opret; uint8_t evalcode = EVAL_DILITHIUM;
@@ -2969,6 +2993,24 @@ uint8_t dilithium_spendopretdecode(uint256 &destpubtxid,std::vector<uint8_t> &si
return(0);
}
CScript dilithium_Qsendopret(uint256 destpubtxid,std::vector<uint8_t>sig,std::vector<uint256> voutpubtxids)
{
CScript opret; uint8_t evalcode = EVAL_DILITHIUM;
opret << OP_RETURN << E_MARSHAL(ss << evalcode << 'Q' << destpubtxid << sig << voutpubtxids);
return(opret);
}
uint8_t dilithium_Qsendopretdecode(uint256 &destpubtxid,std::vector<uint8_t>&sig,std::vector<uint256> &voutpubtxids,CScript scriptPubKey)
{
std::vector<uint8_t> vopret; uint8_t e,f;
GetOpReturnData(scriptPubKey,vopret);
if ( vopret.size() > 2 && E_UNMARSHAL(vopret,ss >> e; ss >> f; ss >> destpubtxid; ss >> sig; ss >> voutpubtxids) != 0 && e == EVAL_DILITHIUM && f == 'Q' )
{
return(f);
}
return(0);
}
UniValue dilithium_rawtxresult(UniValue &result,std::string rawtx)
{
CTransaction tx;
@@ -3229,14 +3271,70 @@ UniValue dilithium_spend(uint64_t txfee,struct CCcontract_info *cp,cJSON *params
} else return(cclib_error(result,"need to have exactly 2 params sendtxid, scriptPubKey"));
}
bool dilithium_Qvalidate(struct CCcontract_info *cp,int32_t height,Eval *eval,const CTransaction tx)
{
int32_t i,numvins,numvouts,mlen,smlen=CRYPTO_BYTES+32; CPubKey destpub33; std::string handle; uint256 tmptxid,hashBlock,destpubtxid,signerpubtxid; CTransaction vintx; std::vector<uint8_t> tmpsig,sig,vopret; uint8_t msg[32],msg2[CRYPTO_BYTES+32],pk[CRYPTO_PUBLICKEYBYTES],*script; std::vector<uint256> voutpubtxids;
numvins = tx.vin.size();
signerpubtxid = zeriod;
for (i=0; i<numvins; i++)
{
if ( IsCCInput(tx.vin[i].scriptSig) != 0 )
{
if ( myGetTransaction(tx.vin[i].prevout.hash,vintx,hashBlock) != 0 && (numvouts= vintx.vout.size()) > 1 )
{
GetOpReturnData(vintx.vout[numvouts-1].scriptPubKey,vopret);
script = (uint8_t *)vopret.data();
if ( script[1] == 'Q' )
{
if ( dilithium_Qsendopretdecode(tmptxid,tmpsig,voutpubtxids,vintx.vout[numvouts-1].scriptPubKey) != 'Q' )
return eval->Invalid("couldnt decode destpubtxid from Qsend");
else if ( vntx.vin[i].prevout.n > voutpubtxids.size() )
return eval->Invalid("no destpubtxid for prevout.n");
destpubtxid = voutpubtxids[vintx.vin[i].prevout.n];
}
else
{
if ( dilithium_sendopretdecode(destpubtxid,vintx.vout[numvouts-1].scriptPubKey) != 'x' )
return eval->Invalid("couldnt decode destpubtxid from send");
}
if ( signerpubtxid == zeroid )
signerpubtxid = destpubtxid;
else if ( destpubtxid != signerpubtxid )
return eval->Invalid("destpubtxid of vini doesnt match first one");
}
}
}
if ( signerpubtxid != zeroid )
{
numvouts = tx.vout.size();
if ( dilithium_Qsendopretdecode(destpubtxid,sig,voutpubtxids,tx.vout[numvouts-1].scriptPubKey) == 'Q' && destpubtxid == signerpubtxid && sig.size() == smlen )
{
if ( dilithium_Qmsghash(msg,tx,voutpubtxids) < 0 )
return eval->Invalid("couldnt get Qmsghash");
else if ( dilithium_bigpubget(handle,destpub33,pk,signerpubtxid) < 0 )
return eval->Invalid("couldnt get bigpub");
else
{
if ( _dilithium_verify(msg2,&mlen,&sig[0],smlen,pk) < 0 )
return eval->Invalid("failed dilithium verify");
else if ( mlen != 32 || memcmp(msg,msg2,32) != 0 )
return eval->Invalid("failed dilithium msg verify");
else return eval->Invalid("this is actually a success");
}
} else return eval->Invalid("failed decode Qsend");
} else return eval->Invalid("unexpected zero signerpubtxid");
}
bool dilithium_validate(struct CCcontract_info *cp,int32_t height,Eval *eval,const CTransaction tx)
{
CPubKey destpub33; std::string handle; uint256 hashBlock,destpubtxid,checktxid; CTransaction vintx; int32_t numvouts,numvins,mlen,smlen=CRYPTO_BYTES+32; std::vector<uint8_t> sig; uint8_t msg[32],msg2[CRYPTO_BYTES+32],pk[CRYPTO_PUBLICKEYBYTES];
CPubKey destpub33; std::string handle; uint256 hashBlock,destpubtxid,checktxid; CTransaction vintx; int32_t numvouts,mlen,smlen=CRYPTO_BYTES+32; std::vector<uint8_t> sig,vpopret; uint8_t msg[32],msg2[CRYPTO_BYTES+32],pk[CRYPTO_PUBLICKEYBYTES],*script;
// if all dilithium tx -> do multispend/send, else:
numvouts = tx.vout.size();
numvins = tx.vin.size();
if ( tx.vout.size() != 2 )
GetOpReturnData(tx.vout[numvouts-1].scriptPubKey,vopret);
script = (uint8_t *)vopret.data();
if ( script[1] == 'Q' )
return(dilithium_Qvalidate(cp,height,eval,tx));
else if ( tx.vout.size() != 2 )
return eval->Invalid("numvouts != 2");
else if ( tx.vin.size() != 1 )
return eval->Invalid("numvins != 1");