Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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76 lines
2.3 KiB
76 lines
2.3 KiB
#include <cryptoconditions.h>
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#include "main.h"
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#include "chain.h"
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#include "streams.h"
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#include "cc/eval.h"
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#include "cc/betprotocol.h"
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#include "primitives/transaction.h"
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/*
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* Crypto-Condition EVAL method that verifies a payout against a transaction
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* notarised on another chain.
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*
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* IN: params - condition params
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* IN: importTx - Payout transaction on value chain (KMD)
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* IN: nIn - index of input of stake
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*
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* importTx: Spends stakeTx with payouts from asset chain
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*
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* in 0: Spends Stake TX and contains ImportPayout CC
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* out 0: OP_RETURN MomProof, disputeTx
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* out 1-: arbitrary payouts
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*
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* disputeTx: Spends sessionTx.0 (opener on asset chain)
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*
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* in 0: spends sessionTx.0
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* in 1-: anything
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* out 0: OP_RETURN hash of payouts
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* out 1-: anything
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*/
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bool Eval::ImportPayout(const std::vector<uint8_t> params, const CTransaction &importTx, unsigned int nIn)
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{
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if (importTx.vout.size() == 0) return Invalid("no-vouts");
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// load data from vout[0]
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MoMProof proof;
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CTransaction disputeTx;
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{
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std::vector<unsigned char> vopret;
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GetOpReturnData(importTx.vout[0].scriptPubKey, vopret);
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if (!E_UNMARSHAL(vopret, ss >> proof; ss >> disputeTx))
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return Invalid("invalid-payload");
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}
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// Check disputeTx.0 shows correct payouts
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{
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uint256 givenPayoutsHash;
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GetOpReturnHash(disputeTx.vout[0].scriptPubKey, givenPayoutsHash);
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std::vector<CTxOut> payouts(importTx.vout.begin() + 1, importTx.vout.end());
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if (givenPayoutsHash != SerializeHash(payouts))
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return Invalid("wrong-payouts");
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}
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// Check disputeTx spends sessionTx.0
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// condition ImportPayout params is session ID from other chain
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{
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uint256 sessionHash;
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if (!E_UNMARSHAL(params, ss >> sessionHash))
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return Invalid("malformed-params");
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if (disputeTx.vin[0].prevout != COutPoint(sessionHash, 0))
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return Invalid("wrong-session");
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}
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// Check disputeTx solves momproof from vout[0]
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{
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NotarisationData data;
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if (!GetNotarisationData(proof.notarisationHash, data))
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return Invalid("coudnt-load-mom");
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if (data.MoM != proof.Exec(disputeTx.GetHash()))
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return Invalid("mom-check-fail");
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}
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return Valid();
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}
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