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AND-8877 Add KRC20 base support #850

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merged 2 commits into from
Dec 6, 2024
Merged

AND-8877 Add KRC20 base support #850

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c1d556c
AND-8877 Add KRC20 base support
nzeeei Nov 29, 2024
569e2e0
AND-8877 Fix bugs and review issues
nzeeei Dec 6, 2024
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1 change: 1 addition & 0 deletions blockchain-demo/src/main/java/com/tangem/demo/datastorage/DummyBlockchainDataStorage.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -5,4 +5,5 @@ import com.tangem.blockchain.common.datastorage.BlockchainDataStorage
internal object DummyBlockchainDataStorage : BlockchainDataStorage {
override suspend fun getOrNull(key: String): String? = null
override suspend fun store(key: String, value: String) = Unit
override suspend fun remove(key: String) = Unit
}
15 changes: 11 additions & 4 deletions blockchain/src/main/java/com/tangem/blockchain/blockchains/hedera/HederaWalletManager.kt
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Expand Up @@ -87,7 +87,7 @@ internal class HederaWalletManager(
if (error is BlockchainSdkError) error("Error isn't BlockchainSdkError")
}

override suspend fun hasRequirements(currencyType: CryptoCurrencyType): Boolean {
private suspend fun assetRequiresAssociation(currencyType: CryptoCurrencyType): Boolean {
return when (currencyType) {
is CryptoCurrencyType.Coin -> false
is CryptoCurrencyType.Token -> {
Expand All @@ -99,7 +99,7 @@ internal class HederaWalletManager(
}

override suspend fun requirementsCondition(currencyType: CryptoCurrencyType): AssetRequirementsCondition? {
if (!hasRequirements(currencyType)) return null
if (!assetRequiresAssociation(currencyType)) return null

return when (currencyType) {
is CryptoCurrencyType.Coin -> null
Expand All @@ -110,7 +110,10 @@ internal class HederaWalletManager(
} else {
val feeValue = exchangeRate * HBAR_TOKEN_ASSOCIATE_USD_COST
val feeAmount = Amount(blockchain = wallet.blockchain, value = feeValue)
AssetRequirementsCondition.PaidTransactionWithFee(feeAmount)
AssetRequirementsCondition.PaidTransactionWithFee(
blockchain = blockchain,
feeAmount = feeAmount,
)
}
}
}
Expand All @@ -120,7 +123,7 @@ internal class HederaWalletManager(
currencyType: CryptoCurrencyType,
signer: TransactionSigner,
): SimpleResult {
if (!hasRequirements(currencyType)) return SimpleResult.Success
if (!assetRequiresAssociation(currencyType)) return SimpleResult.Success

return when (currencyType) {
is CryptoCurrencyType.Coin -> SimpleResult.Success
Expand Down Expand Up @@ -155,6 +158,10 @@ internal class HederaWalletManager(
}
}

override suspend fun discardRequirements(currencyType: CryptoCurrencyType): SimpleResult {
return SimpleResult.Success
}

override suspend fun send(
transactionData: TransactionData,
signer: TransactionSigner,
Expand Down
36 changes: 36 additions & 0 deletions blockchain/src/main/java/com/tangem/blockchain/blockchains/kaspa/KaspaTransaction.java
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Expand Up @@ -24,6 +24,7 @@
// based on BitcoinCashTransaction
public class KaspaTransaction extends Transaction {
private final byte[] TRANSACTION_SIGNING_DOMAIN = "TransactionSigningHash".getBytes(StandardCharsets.UTF_8);
private final byte[] TRANSACTION_ID = "TransactionID".getBytes(StandardCharsets.UTF_8);
private final byte[] TRANSACTION_SIGNING_ECDSA_DOMAIN_HASH =
Sha256Hash.of("TransactionSigningHashECDSA".getBytes(StandardCharsets.UTF_8)).getBytes();
private final int BLAKE2B_DIGEST_LENGTH = 32;
Expand Down Expand Up @@ -130,6 +131,41 @@ public synchronized byte[] hashForSignatureWitness(
return Sha256Hash.of(finalBos.toByteArray()).getBytes();
}

public synchronized byte[] transactionHash() {
ByteArrayOutputStream bos = new ByteArrayOutputStream(256);
try {
List<TransactionInput> inputs = getInputs();
List<TransactionOutput> outputs = getOutputs();

uint16ToByteStreamLE(0, bos);

uint64ToByteStreamLE(BigInteger.valueOf(inputs.size()), bos);
for (TransactionInput input: inputs) {
bos.write(input.getOutpoint().getHash().getBytes());
uint32ToByteStreamLE(input.getOutpoint().getIndex(), bos);
uint64ToByteStreamLE(BigInteger.valueOf(0), bos);
uint64ToByteStreamLE(BigInteger.valueOf(0), bos);
}
uint64ToByteStreamLE(BigInteger.valueOf(outputs.size()), bos);
for (TransactionOutput output : outputs) {
byte[] scriptBytes = output.getScriptBytes();
uint64ToByteStreamLE(BigInteger.valueOf(output.getValue().value), bos);
uint16ToByteStreamLE(0, bos); // version
uint64ToByteStreamLE(BigInteger.valueOf(scriptBytes.length), bos);
bos.write(scriptBytes);
}
uint64ToByteStreamLE(BigInteger.valueOf(getLockTime()), bos); // lock time
bos.write(new byte[20]); // subnetwork id
uint64ToByteStreamLE(BigInteger.valueOf(0), bos); // gas
uint64ToByteStreamLE(BigInteger.valueOf(0), bos); // payload size
} catch (IOException e) {
throw new RuntimeException(e);
}

Blake2b.Mac digest = Blake2b.Mac.newInstance(TRANSACTION_ID, BLAKE2B_DIGEST_LENGTH);
return digest.digest(bos.toByteArray());
}

private byte[] blake2bDigestOf(byte[] input) {
Blake2b.Mac digest = Blake2b.Mac.newInstance(TRANSACTION_SIGNING_DOMAIN, BLAKE2B_DIGEST_LENGTH);
return digest.digest(input);
Expand Down
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