Java Code Examples for org.bitcoinj.core.Sha256Hash#wrap()

The following examples show how to use org.bitcoinj.core.Sha256Hash#wrap() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Util.java From jelectrum with MIT License

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public static Sha256Hash hashDoubleBs(ByteString bs)
{
    try
    {

        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.update(bs.toByteArray());

        byte[] pass = md.digest();
        md.update(pass);

        return Sha256Hash.wrap(md.digest());
    }
    catch(java.security.NoSuchAlgorithmException e)
    {
        throw new RuntimeException(e);
    }

}

Example 2

Source File: Util.java From jelectrum with MIT License

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public static Sha256Hash doubleHash(Sha256Hash a)
{
    try
    {
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.update(a.getBytes());

        byte[] pass = md.digest();
        md = MessageDigest.getInstance("SHA-256");
        md.update(pass);

        return Sha256Hash.wrap(md.digest());
    }
    catch(java.security.NoSuchAlgorithmException e)
    {
        throw new RuntimeException(e);
    }

}

Example 3

Source File: BitcoinRPC.java From jelectrum with MIT License

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public Sha256Hash getBlockHash(int height)
    throws java.io.IOException, org.json.JSONException
{
  
    Random rnd = new Random();
    JSONObject msg = new JSONObject();
    msg.put("id", "" + rnd.nextInt());
    msg.put("method","getblockhash");
    JSONArray params = new JSONArray();
    params.put(height);
    msg.put("params", params);
    JSONObject reply = sendPost(msg);

    return Sha256Hash.wrap(reply.getString("result"));

}

Example 4

Source File: MeritConsensus.java From bisq with GNU Affero General Public License v3.0

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@VisibleForTesting
private static boolean isSignatureValid(byte[] signatureFromMerit, String pubKeyAsHex, String blindVoteTxId) {
    // We verify if signature of hash of blindVoteTxId is correct. EC key from first input for blind vote tx is
    // used for signature.
    if (pubKeyAsHex == null) {
        log.error("Error at isSignatureValid: pubKeyAsHex is null");
        return false;
    }

    boolean result = false;
    try {
        ECKey pubKey = ECKey.fromPublicOnly(Utilities.decodeFromHex(pubKeyAsHex));
        ECKey.ECDSASignature signature = ECKey.ECDSASignature.decodeFromDER(signatureFromMerit).toCanonicalised();
        Sha256Hash msg = Sha256Hash.wrap(blindVoteTxId);
        result = pubKey.verify(msg, signature);
    } catch (Throwable t) {
        log.error("Signature verification of issuance failed: " + t.toString());
    }
    if (!result) {
        log.error("Signature verification of issuance failed: blindVoteTxId={}, pubKeyAsHex={}",
                blindVoteTxId, pubKeyAsHex);
    }
    return result;
}

Example 5

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOItem> utxoList) {
    Address a;
    if (restFromWif) {
        a = wallet.getImportedKeys().get(0).toAddress(params);
    } else {
        a = wallet.currentReceiveAddress();
    }

    final List<UTXO> utxos = new ArrayList<>();

    for (UTXOItem utxo : utxoList) {
        Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
        utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                0, false, ScriptBuilder.createOutputScript(a)));
    }

    UTXOProvider utxoProvider = new UTXOProvider() {
        @Override
        public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
            return utxos;
        }

        @Override
        public int getChainHeadHeight() throws UTXOProviderException {
            return Integer.MAX_VALUE;
        }

        @Override
        public NetworkParameters getParams() {
            return wallet.getParams();
        }
    };
    wallet.setUTXOProvider(utxoProvider);
}

Example 6

Source File: Sha256HashDeserializer.java From consensusj with Apache License 2.0

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@Override
public Sha256Hash deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
    JsonToken token = p.getCurrentToken();
    switch (token) {
        case VALUE_STRING:
            return Sha256Hash.wrap(p.getValueAsString());
        default:
            return (Sha256Hash) ctxt.handleUnexpectedToken(Sha256Hash.class, p);
    }
}

Example 7

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOItem> utxoList) {

        Address a = wallet.currentReceiveAddress();
        final List<UTXO> utxos = new ArrayList<>();

        for (UTXOItem utxo : utxoList) {
            Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
            utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                    0, false, ScriptBuilder.createOutputScript(a)));
        }

        UTXOProvider utxoProvider = new UTXOProvider() {
            @Override
            public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
                return utxos;
            }

            @Override
            public int getChainHeadHeight() throws UTXOProviderException {
                return Integer.MAX_VALUE;
            }

            @Override
            public NetworkParameters getParams() {
                return wallet.getParams();
            }
        };
        wallet.setUTXOProvider(utxoProvider);
    }

Example 8

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOItem> utxoList) {
    Address a;
    if (restFromWif) {
        a = wallet.getImportedKeys().get(0).toAddress(params);
    } else {
        a = wallet.currentReceiveAddress();
    }

    final List<UTXO> utxos = new ArrayList<>();

    for (UTXOItem utxo : utxoList) {
        Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
        utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                0, false, ScriptBuilder.createOutputScript(a)));
    }

    UTXOProvider utxoProvider = new UTXOProvider() {
        @Override
        public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
            return utxos;
        }

        @Override
        public int getChainHeadHeight() throws UTXOProviderException {
            return Integer.MAX_VALUE;
        }

        @Override
        public NetworkParameters getParams() {
            return wallet.getParams();
        }
    };
    wallet.setUTXOProvider(utxoProvider);
}

Example 9

Source File: LevelDBFullPrunedBlockStore.java From green_android with GNU General Public License v3.0

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private void initFromDb() throws BlockStoreException {
    Sha256Hash hash = Sha256Hash.wrap(batchGet(getKey(KeyType.CHAIN_HEAD_SETTING)));
    this.chainHeadBlock = get(hash);
    this.chainHeadHash = hash;
    if (this.chainHeadBlock == null) {
        throw new BlockStoreException("corrupt database block store - head block not found");
    }

    hash = Sha256Hash.wrap(batchGet(getKey(KeyType.VERIFIED_CHAIN_HEAD_SETTING)));
    this.verifiedChainHeadBlock = get(hash);
    this.verifiedChainHeadHash = hash;
    if (this.verifiedChainHeadBlock == null) {
        throw new BlockStoreException("corrupt databse block store - verified head block not found");
    }
}

Example 10

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOListResponse.UTXOItem> utxoList) {
    Address a;
    if (restFromWif) {
        a = wallet.getImportedKeys().get(0).toAddress(params);
    } else {
        a = wallet.currentReceiveAddress();
    }

    final List<UTXO> utxos = new ArrayList<>();

    Log.d("svcom", "resp size - " + utxoList.size());
    for (UTXOListResponse.UTXOItem utxo : utxoList) {
        Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
        utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                0, false, ScriptBuilder.createOutputScript(a)));
    }
    for (UTXO u : utxos) {
        Log.d("svcom", "u - " + u.getValue().toFriendlyString());
    }

    UTXOProvider utxoProvider = new UTXOProvider() {
        @Override
        public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
            return utxos;
        }

        @Override
        public int getChainHeadHeight() throws UTXOProviderException {
            return Integer.MAX_VALUE;
        }

        @Override
        public NetworkParameters getParams() {
            return wallet.getParams();
        }
    };
    wallet.setUTXOProvider(utxoProvider);
}

Example 11

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOItem> utxoList) {
    if (wallet == null) return;

    Address a;
    if (restFromWif) {
        a = wallet.getImportedKeys().get(0).toAddress(params);
    } else {
        a = wallet.currentReceiveAddress();
    }

    final List<UTXO> utxos = new ArrayList<>();

    for (UTXOItem utxo : utxoList) {
        Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
        utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                0, false, ScriptBuilder.createOutputScript(a)));
    }

    UTXOProvider utxoProvider = new UTXOProvider() {
        @Override
        public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
            return utxos;
        }

        @Override
        public int getChainHeadHeight() throws UTXOProviderException {
            return Integer.MAX_VALUE;
        }

        @Override
        public NetworkParameters getParams() {
            return wallet.getParams();
        }
    };
    wallet.setUTXOProvider(utxoProvider);
}

Example 12

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOItem> utxoList) {
    if (wallet == null) return;

    Address a;
    if (restFromWif) {
        a = wallet.getImportedKeys().get(0).toAddress(params);
    } else {
        a = wallet.currentReceiveAddress();
    }

    final List<UTXO> utxos = new ArrayList<>();

    for (UTXOItem utxo : utxoList) {
        Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
        utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                0, false, ScriptBuilder.createOutputScript(a)));
    }

    UTXOProvider utxoProvider = new UTXOProvider() {
        @Override
        public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
            return utxos;
        }

        @Override
        public int getChainHeadHeight() throws UTXOProviderException {
            return Integer.MAX_VALUE;
        }

        @Override
        public NetworkParameters getParams() {
            return wallet.getParams();
        }
    };
    wallet.setUTXOProvider(utxoProvider);
}

Example 13

Source File: WalletManager.java From guarda-android-wallets with GNU General Public License v3.0

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private void setUTXO(List<UTXOItem> utxoList) {
    if (wallet == null) {
        return;
    }

    Address a = wallet.getImportedKeys().get(0).toAddress(params);
    final List<UTXO> utxos = new ArrayList<>();

    for (UTXOItem utxo : utxoList) {
        Sha256Hash hash = Sha256Hash.wrap(utxo.getTxHash());
        utxos.add(new UTXO(hash, utxo.getTxOutputN(), Coin.valueOf(utxo.getSatoshiValue()),
                0, false, ScriptBuilder.createOutputScript(a)));
    }

    UTXOProvider utxoProvider = new UTXOProvider() {
        @Override
        public List<UTXO> getOpenTransactionOutputs(List<Address> addresses) throws UTXOProviderException {
            return utxos;
        }

        @Override
        public int getChainHeadHeight() throws UTXOProviderException {
            return Integer.MAX_VALUE;
        }

        @Override
        public NetworkParameters getParams() {
            return wallet.getParams();
        }
    };
    wallet.setUTXOProvider(utxoProvider);
}

Example 14

Source File: TransactionUtil.java From chain33-sdk-java with BSD 2-Clause "Simplified" License

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private static Signature btcCoinSign(byte[] data, byte[] privateKey) {
	byte[] sha256 = TransactionUtil.Sha256(data);
	Sha256Hash sha256Hash = Sha256Hash.wrap(sha256);
	ECKey ecKey = ECKey.fromPrivate(privateKey);
	ECKey.ECDSASignature ecdsas = ecKey.sign(sha256Hash);
	byte[] signByte = ecdsas.encodeToDER();
	Signature signature = new Signature();
	signature.setPubkey(ecKey.getPubKey());
	signature.setSignature(signByte);
	signature.setTy(SignType.SECP256K1.getType());
	return signature;
}

Example 15

Source File: LevelDBFullPrunedBlockStore.java From GreenBits with GNU General Public License v3.0

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private void initFromDb() throws BlockStoreException {
    Sha256Hash hash = Sha256Hash.wrap(batchGet(getKey(KeyType.CHAIN_HEAD_SETTING)));
    this.chainHeadBlock = get(hash);
    this.chainHeadHash = hash;
    if (this.chainHeadBlock == null) {
        throw new BlockStoreException("corrupt database block store - head block not found");
    }

    hash = Sha256Hash.wrap(batchGet(getKey(KeyType.VERIFIED_CHAIN_HEAD_SETTING)));
    this.verifiedChainHeadBlock = get(hash);
    this.verifiedChainHeadHash = hash;
    if (this.verifiedChainHeadBlock == null) {
        throw new BlockStoreException("corrupt databse block store - verified head block not found");
    }
}

Example 16

Source File: JSONMap.java From green_android with GNU General Public License v3.0

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public Sha256Hash getHash(final String k) {
    final String v = getString(k);
    return v == null ? null : Sha256Hash.wrap(v);
}

Example 17

Source File: ScriptPattern.java From bcm-android with GNU General Public License v3.0

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/**
 * Retrieves the hash from a segwit commitment (in an output of the coinbase transaction).
 */
public static Sha256Hash extractSegwitCommitmentHash(Script script) {
    return Sha256Hash.wrap(Arrays.copyOfRange(script.chunks.get(1).data, 4, 36));
}

Example 18

Source File: JSONMap.java From GreenBits with GNU General Public License v3.0

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public Sha256Hash getHash(final String k) {
    final String v = getString(k);
    return v == null ? null : Sha256Hash.wrap(v);
}

Example 19

Source File: GrindTest.java From jelectrum with MIT License

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public static Sha256Hash randomHash(Random rnd)
{
  byte[] b=new byte[32];
  rnd.nextBytes(b);
  return Sha256Hash.wrap(b);
}

Example 20

Source File: WalletProtobufSerializer.java From bcm-android with GNU General Public License v3.0

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public static Sha256Hash byteStringToHash(ByteString bs) {
    return Sha256Hash.wrap(bs.toByteArray());
}