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Add consensus branch ID parameter to SignatureHash, remove SigVersion parameter

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We do not need to be able to calculate multiple SignatureHash versions for a
single transaction format; instead, we use the transaction format to determine
the SigVersion.

The consensus branch ID *does* need to be passed in from the outside, as only
the caller knows the context in which the SignatureHash is being calculated
(ie. mempool acceptance vs. block validation).

JoinSplit signature verification has been moved into ContextualCheckTransaction,
where the consensus branch ID can be obtained.

The argument to the sign command for zcash-tx has been modified to take a height
in addition to the optional sigtype flags.
This commit is contained in:
Jack Grigg
2018-02-02 01:49:42 +00:00
parent 6514771a44
commit be12669982
26 changed files with 360 additions and 237 deletions
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10
src/utiltest.cpp
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@@ -4,6 +4,8 @@
#include "utiltest.h"
#include "consensus/upgrades.h"
CWalletTx GetValidReceive(ZCJoinSplit& params,
const libzcash::SpendingKey& sk, CAmount value,
bool randomInputs) {
@@ -45,11 +47,10 @@ CWalletTx GetValidReceive(ZCJoinSplit& params,
mtx.vjoinsplit.push_back(jsdesc);
// Empty output script.
uint32_t consensusBranchId = SPROUT_BRANCH_ID;
CScript scriptCode;
CTransaction signTx(mtx);
//fifth parameter amount will not be used for joinsplit signing, value arbitrary, also arbitrary decision what to use for sigverion
//This is just to get this merge commit to compile later will remove sigversion parameter as choosing sigversion by block height
uint256 dataToBeSigned = SignatureHash(scriptCode, signTx, NOT_AN_INPUT, SIGHASH_ALL,0, SIGVERSION_BASE);
uint256 dataToBeSigned = SignatureHash(scriptCode, signTx, NOT_AN_INPUT, SIGHASH_ALL, 0, consensusBranchId);
// Add the signature
assert(crypto_sign_detached(&mtx.joinSplitSig[0], NULL,
@@ -131,9 +132,10 @@ CWalletTx GetValidSpend(ZCJoinSplit& params,
mtx.vjoinsplit.push_back(jsdesc);
// Empty output script.
uint32_t consensusBranchId = SPROUT_BRANCH_ID;
CScript scriptCode;
CTransaction signTx(mtx);
uint256 dataToBeSigned = SignatureHash(scriptCode, signTx, NOT_AN_INPUT, SIGHASH_ALL,0,SIGVERSION_BASE);
uint256 dataToBeSigned = SignatureHash(scriptCode, signTx, NOT_AN_INPUT, SIGHASH_ALL, 0, consensusBranchId);
// Add the signature
assert(crypto_sign_detached(&mtx.joinSplitSig[0], NULL,