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Updated on 2026-08-14

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Tangem 2019-07-24 12:14:15 +03:00
parent 1e1e2932cf
commit 0fc6bc82eb
1 changed files with 41 additions and 15 deletions
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56
app/src/main/java/com/tangem/wallet/eos/EosEngine.java
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@ -65,6 +65,8 @@ public class EosEngine extends CoinEngine {
private static final String TAG = EosEngine.class.getSimpleName();
public EosData coinData = null;
private final int signRetries = 10;
public EosEngine(TangemContext ctx) throws Exception {
super(ctx);
if (ctx.getCoinData() == null) {
@ -323,11 +325,16 @@ public class EosEngine extends CoinEngine {
@Override
public String calculateAddress(byte[] pkCompressed) {
String cid = Util.bytesToHex(ctx.getCard().getCID());
String address = "testem" + cid.substring(2, 4) + cid.substring(11, 15);//TODO: change
String cid = Util.bytesToHex(ctx.getCard().getCID()).toLowerCase();
String address = cid.substring(0, 4) + cid.substring(8, 16);
address = address.replace("0", "o").replace("6", "b").replace("7,", "t").replace("8", "s").replace("9", "g");
return address;
// String cid = Util.bytesToHex(ctx.getCard().getCID());
// String address = "testem" + cid.substring(2, 4) + cid.substring(11, 15);
// address = address.replace("0", "o").replace("6", "b").replace("7,", "t").replace("8", "s").replace("9", "g");
// return address;
// byte[] csum = Ripemd160.from(pkCompressed).bytes();
// csum = Raw.copy(csum, 0, 4);
// byte[] addy = Raw.concat(pkCompressed, csum);
@ -357,7 +364,7 @@ public class EosEngine extends CoinEngine {
// --- prepare transaction for sign as in LocalApiImpl
String quantity = amountValue.setScale(4).toString();
String memo = "test";
String memo = "";
// ① pack transfer data
TransferArg transferArg = new TransferArg(coinData.getWallet(), targetAddress, quantity, memo);
@ -400,8 +407,10 @@ public class EosEngine extends CoinEngine {
@Override
public byte[][] getHashesToSign() throws NoSuchAlgorithmException {
byte[][] hashesForSign = new byte[1][];
hashesForSign[0] = hashForSign.getBytes();
byte[][] hashesForSign = new byte[signRetries][];
for (int i = 0; i < signRetries; i++) {
hashesForSign[i] = hashForSign.getBytes();
}
return hashesForSign;
}
@ -422,9 +431,21 @@ public class EosEngine extends CoinEngine {
@Override
public byte[] onSignCompleted(byte[] signFromCard) throws Exception {
BigInteger r = new BigInteger(1, Arrays.copyOfRange(signFromCard, 0, 32));
BigInteger s = new BigInteger(1, Arrays.copyOfRange(signFromCard, 32, 64));
s = CryptoUtil.toCanonicalised(s);
BigInteger r = null, s = null;
for (int i = 0; i < signRetries; ++i) {
r = new BigInteger(1, Arrays.copyOfRange(signFromCard, i * 64, 32 + i * 64));
if (r.toByteArray().length == 33) {
Log.e(TAG, "33 bytes R: " + Util.bytesToHex(r.toByteArray()));
} else {
s = new BigInteger(1, Arrays.copyOfRange(signFromCard, 32 + i * 64, 64 + i * 64));
s = CryptoUtil.toCanonicalised(s);
break;
}
}
if (s == null) {
throw new Exception("All signatures not canonical");
}
boolean f = ECKey.verify(Util.calculateSHA256(raw.bytes()), new ECKey.ECDSASignature(r, s), ctx.getCard().getWalletPublicKey());
@ -443,10 +464,10 @@ public class EosEngine extends CoinEngine {
//TODO: not every signature works for EOS, if r.toByteArray length is 33, even if first 0x00 byte is cut,
//TODO: signature would be counted non canonical because first bit is not zero. Need to check it on card or there will be multiple security delays
if (r.toByteArray().length == 33) {
Log.e(TAG, "33 bytes R: " + Util.bytesToHex(rbytes));
throw new Exception("33 byte R");
}
// if (r.toByteArray().length == 33) {
// Log.e(TAG, "33 bytes R: " + Util.bytesToHex(rbytes));
// throw new Exception("33 byte R");
// }
byte[] pub_buf = new byte[65];
pub_buf[0] = (byte) v;
@ -507,9 +528,14 @@ public class EosEngine extends CoinEngine {
Observer<Account> accountObserver = new DefaultObserver<Account>() {
@Override
public void onNext(Account account) {
String[] balanceStrings = account.getCoreLiquidBalance().split(" ");
coinData.setBalanceReceived(true);
coinData.setBalance(new Amount(balanceStrings[0], balanceStrings[1]));
if (account.getCoreLiquidBalance() != null) {
String[] balanceStrings = account.getCoreLiquidBalance().split(" ");
coinData.setBalanceReceived(true);
coinData.setBalance(new Amount(balanceStrings[0], balanceStrings[1]));
} else {
coinData.setBalanceReceived(true);
coinData.setBalance(new Amount(0L, getBalanceCurrency()));
}
}
@Override