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Switch to Ed25519 for cryptographic binding of joinsplits to transactions.

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This commit is contained in:
Sean Bowe
2016-05-30 10:59:20 -06:00
parent b48122b57b
commit 320f2cc7e0
9 changed files with 566 additions and 626 deletions
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17
src/main.cpp
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@@ -5,6 +5,8 @@
#include "main.h"
#include "sodium.h"
#include "addrman.h"
#include "alert.h"
#include "arith_uint256.h"
@@ -967,19 +969,20 @@ bool CheckTransaction(const CTransaction& tx, CValidationState &state)
REJECT_INVALID, "error-computing-signature-hash");
}
// Verify the signature
if (!tx.joinSplitPubKey.Verify(dataToBeSigned, tx.joinSplitSig)) {
return state.DoS(100, error("CheckTransaction(): JoinSplit signature does not verify"),
if (crypto_sign_verify_detached(&tx.joinSplitSig[0],
dataToBeSigned.begin(), 32,
tx.joinSplitPubKey.begin()
) != 0) {
return state.DoS(100, error("CheckTransaction(): invalid joinsplit signature"),
REJECT_INVALID, "invalid-joinsplit-signature");
}
// Ensure that zk-SNARKs verify
uint256 pubKeyHash = tx.joinSplitPubKey.GetZcashHash();
if (state.PerformPourVerification()) {
// Ensure that zk-SNARKs verify
BOOST_FOREACH(const CPourTx &pour, tx.vpour) {
if (!pour.Verify(*pzcashParams, pubKeyHash)) {
if (!pour.Verify(*pzcashParams, tx.joinSplitPubKey)) {
return state.DoS(100, error("CheckTransaction(): pour does not verify"),
REJECT_INVALID, "bad-txns-pour-verification-failed");
REJECT_INVALID, "bad-txns-pour-verification-failed");
}
}
}