add additional checks and tests

src/main/java/com/craigraw/drongo/ExtendedPublicKey.java

@@ -14,6 +14,7 @@ public class ExtendedPublicKey {
     private static final int bip32HeaderP2PKHYPub = 0x049D7CB2; //The 4 byte header that serializes in base58 to "ypub".
     private static final int bip32HeaderP2WPKHZPub = 0x04B24746; // The 4 byte header that serializes in base58 to "zpub"
     private static final int bip32HeaderP2WHSHPub = 0x2AA7ED3; // The 4 byte header that serializes in base58 to "Zpub"
+    private static final int bip32HeaderTestnetPub = 0x43587CF; // The 4 byte header that serializes in base58 to "tpub"
 
     private KeyDerivation keyDerivation;
     private byte[] parentFingerprint;
@@ -142,7 +143,7 @@ public class ExtendedPublicKey {
         byte[] serializedKey = Base58.decodeChecked(extPubKey);
         ByteBuffer buffer = ByteBuffer.wrap(serializedKey);
         int header = buffer.getInt();
-        if(!(header == bip32HeaderP2PKHXPub || header == bip32HeaderP2PKHYPub || header == bip32HeaderP2WPKHZPub || header == bip32HeaderP2WHSHPub)) {
+        if(!(header == bip32HeaderP2PKHXPub || header == bip32HeaderP2PKHYPub || header == bip32HeaderP2WPKHZPub || header == bip32HeaderP2WHSHPub || header == bip32HeaderTestnetPub)) {
             throw new IllegalArgumentException("Unknown header bytes: " + DeterministicKey.toBase58(serializedKey).substring(0, 4));
         }
 

src/main/java/com/craigraw/drongo/protocol/Transaction.java

@@ -39,13 +39,7 @@ public class Transaction extends TransactionPart {
             if (!hasWitnesses() && cachedWTxId != null) {
                 cachedTxId = cachedWTxId;
             } else {
-                ByteArrayOutputStream stream = new UnsafeByteArrayOutputStream(length < 32 ? 32 : length + 32);
+                cachedTxId = calculateTxId(false);
-                try {
-                    bitcoinSerializeToStream(stream, false);
-                } catch (IOException e) {
-                    throw new RuntimeException(e); // cannot happen
-                }
-                cachedTxId = Sha256Hash.wrapReversed(Sha256Hash.hashTwice(stream.toByteArray()));
             }
         }
         return cachedTxId;
@@ -56,18 +50,22 @@ public class Transaction extends TransactionPart {
             if (!hasWitnesses() && cachedTxId != null) {
                 cachedWTxId = cachedTxId;
             } else {
-                ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                cachedWTxId = calculateTxId(true);
-                try {
-                    bitcoinSerializeToStream(baos, hasWitnesses());
-                } catch (IOException e) {
-                    throw new RuntimeException(e); // cannot happen
-                }
-                cachedWTxId = Sha256Hash.wrapReversed(Sha256Hash.hashTwice(baos.toByteArray()));
             }
         }
         return cachedWTxId;
     }
 
+    public Sha256Hash calculateTxId(boolean useWitnesses) {
+        ByteArrayOutputStream stream = new UnsafeByteArrayOutputStream(length < 32 ? 32 : length + 32);
+        try {
+            bitcoinSerializeToStream(stream, useWitnesses);
+        } catch (IOException e) {
+            throw new RuntimeException(e); // cannot happen
+        }
+        return Sha256Hash.wrapReversed(Sha256Hash.hashTwice(stream.toByteArray()));
+    }
+
     public boolean hasWitnesses() {
         for (TransactionInput in : inputs)
             if (in.hasWitness())

src/main/java/com/craigraw/drongo/psbt/PSBT.java

@@ -134,6 +134,8 @@ public class PSBT {
                 throw new IllegalStateException("Missing outputs");
             }
         }
+
+        log.debug("Calculated fee at " + getFee());
     }
 
     private PSBTEntry parseEntry(ByteBuffer psbtByteBuffer) {
@@ -206,7 +208,11 @@ public class PSBT {
                         log.debug(" Transaction input references txid: " + input.getOutpoint().getHash() + " vout " + input.getOutpoint().getIndex() + " with script " + input.getScript());
                     }
                     for(TransactionOutput output: transaction.getOutputs()) {
-                        log.debug(" Transaction output value: " + output.getValue() + " to addresses " + Arrays.asList(output.getScript().getToAddresses()) + " with script hex " + Hex.toHexString(output.getScript().getProgram()) + " to script " + output.getScript());
+                        try {
+                            log.debug(" Transaction output value: " + output.getValue() + " to addresses " + Arrays.asList(output.getScript().getToAddresses()) + " with script hex " + Hex.toHexString(output.getScript().getProgram()) + " to script " + output.getScript());
+                        } catch(ProtocolException e) {
+                            log.debug(" Transaction output value: " + output.getValue() + " with script hex " + Hex.toHexString(output.getScript().getProgram()) + " to script " + output.getScript());
+                        }
                     }
                     this.transaction = transaction;
                     break;
@@ -228,7 +234,7 @@ public class PSBT {
                     log.debug("PSBT global proprietary data: " + Hex.toHexString(entry.getData()));
                     break;
                 default:
-                    throw new IllegalStateException("PSBT global not recognized key type: " + entry.getKeyType());
+                    log.warn("PSBT global not recognized key type: " + entry.getKeyType());
             }
         }
     }
@@ -240,7 +246,7 @@ public class PSBT {
                 throw new IllegalStateException("Found duplicate key for PSBT input: " + Hex.toHexString(duplicate.getKey()));
             }
 
-            PSBTInput input = new PSBTInput(inputEntries);
+            PSBTInput input = new PSBTInput(inputEntries, transaction, this.psbtInputs.size());
             this.psbtInputs.add(input);
         }
     }
@@ -268,6 +274,30 @@ public class PSBT {
         return null;
     }
 
+    public Long getFee() {
+        long fee = 0L;
+
+        for (int i = 0; i < psbtInputs.size(); i++) {
+            PSBTInput input = psbtInputs.get(i);
+            if(input.getNonWitnessUtxo() != null) {
+                int index = (int)transaction.getInputs().get(i).getOutpoint().getIndex();
+                fee += input.getNonWitnessUtxo().getOutputs().get(index).getValue();
+            } else if(input.getWitnessUtxo() != null) {
+                fee += input.getWitnessUtxo().getValue();
+            } else {
+                log.error("Cannot determine fee - not enough information provided on inputs");
+                return null;
+            }
+        }
+
+        for (int i = 0; i < transaction.getOutputs().size(); i++) {
+            TransactionOutput output = transaction.getOutputs().get(i);
+            fee -= output.getValue();
+        }
+
+        return fee;
+    }
+
     public byte[] serialize() throws IOException {
         ByteArrayOutputStream transactionbaos = new ByteArrayOutputStream();
         transaction.bitcoinSerialize(transactionbaos);
@@ -503,7 +533,7 @@ public class PSBT {
     }
 
     public static void main(String[] args) throws Exception {
-        String psbtBase64 = "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";
+        String psbtBase64 = "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";
 
         PSBT psbt = null;
         String filename = "default.psbt";

src/main/java/com/craigraw/drongo/psbt/PSBTEntry.java

@@ -48,7 +48,16 @@ public class PSBTEntry {
     }
 
     public static KeyDerivation parseKeyDerivation(byte[] data) {
+        if(data.length < 4) {
+            throw new IllegalStateException("Invalid master fingerprint specified: not enough bytes");
+        }
         String masterFingerprint = getMasterFingerprint(Arrays.copyOfRange(data, 0, 4));
+        if(masterFingerprint.length() != 8) {
+            throw new IllegalStateException("Invalid master fingerprint specified: " + masterFingerprint);
+        }
+        if(data.length < 8) {
+            throw new IllegalStateException("Invalid key derivation specified: not enough bytes");
+        }
         List<ChildNumber> bip32pathList = readBIP32Derivation(Arrays.copyOfRange(data, 4, data.length));
         String bip32path = KeyDerivation.writePath(bip32pathList);
         return new KeyDerivation(masterFingerprint, bip32path);

src/main/java/com/craigraw/drongo/psbt/PSBTInput.java

@@ -4,10 +4,7 @@ import com.craigraw.drongo.KeyDerivation;
 import com.craigraw.drongo.Utils;
 import com.craigraw.drongo.crypto.ECKey;
 import com.craigraw.drongo.crypto.LazyECPoint;
-import com.craigraw.drongo.protocol.Script;
+import com.craigraw.drongo.protocol.*;
-import com.craigraw.drongo.protocol.Transaction;
-import com.craigraw.drongo.protocol.TransactionInput;
-import com.craigraw.drongo.protocol.TransactionOutput;
 import org.bouncycastle.util.encoders.Hex;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -47,12 +44,21 @@ public class PSBTInput {
 
     private static final Logger log = LoggerFactory.getLogger(PSBTInput.class);
 
-    PSBTInput(List<PSBTEntry> inputEntries) {
+    PSBTInput(List<PSBTEntry> inputEntries, Transaction transaction, int index) {
         for(PSBTEntry entry : inputEntries) {
             switch(entry.getKeyType()) {
                 case PSBT_IN_NON_WITNESS_UTXO:
                     entry.checkOneByteKey();
+                    if(witnessUtxo != null) {
+                        throw new IllegalStateException("Cannot have both witness and non-witness utxos in PSBT input");
+                    }
                     Transaction nonWitnessTx = new Transaction(entry.getData());
+                    Sha256Hash inputHash = nonWitnessTx.calculateTxId(false);
+                    Sha256Hash outpointHash = transaction.getInputs().get(index).getOutpoint().getHash();
+                    if(!outpointHash.equals(inputHash)) {
+                        throw new IllegalStateException("Hash of provided non witness utxo transaction " + inputHash + " does not match transaction input outpoint hash " + outpointHash + " at index " + index);
+                    }
+
                     this.nonWitnessUtxo = nonWitnessTx;
                     log.debug("Found input non witness utxo with txid: " + nonWitnessTx.getTxId() + " version " + nonWitnessTx.getVersion() + " size " + nonWitnessTx.getMessageSize() + " locktime " + nonWitnessTx.getLockTime());
                     for(TransactionInput input: nonWitnessTx.getInputs()) {
@@ -64,13 +70,20 @@ public class PSBTInput {
                     break;
                 case PSBT_IN_WITNESS_UTXO:
                     entry.checkOneByteKey();
+                    if(nonWitnessUtxo != null) {
+                        throw new IllegalStateException("Cannot have both witness and non-witness utxos in PSBT input");
+                    }
                     TransactionOutput witnessTxOutput = new TransactionOutput(null, entry.getData(), 0);
+                    if(!ScriptPattern.isP2SH(witnessTxOutput.getScript()) && !ScriptPattern.isP2WPKH(witnessTxOutput.getScript()) && !ScriptPattern.isP2WSH(witnessTxOutput.getScript())) {
+                        throw new IllegalStateException("Witness UTXO provided for non-witness or unknown input");
+                    }
                     this.witnessUtxo = witnessTxOutput;
                     log.debug("Found input witness utxo amount " + witnessTxOutput.getValue() + " script hex " + Hex.toHexString(witnessTxOutput.getScript().getProgram()) + " script " + witnessTxOutput.getScript() + " addresses " + Arrays.asList(witnessTxOutput.getScript().getToAddresses()));
                     break;
                 case PSBT_IN_PARTIAL_SIG:
                     entry.checkOneBytePlusPubKey();
                     LazyECPoint sigPublicKey = new LazyECPoint(ECKey.CURVE.getCurve(), entry.getKeyData());
+                    //TODO: Verify signature
                     this.partialSignatures.put(sigPublicKey, entry.getData());
                     log.debug("Found input partial signature with public key " + sigPublicKey + " signature " + Hex.toHexString(entry.getData()));
                     break;
@@ -84,12 +97,39 @@ public class PSBTInput {
                 case PSBT_IN_REDEEM_SCRIPT:
                     entry.checkOneByteKey();
                     Script redeemScript = new Script(entry.getData());
+                    Script scriptPubKey = null;
+                    if(this.nonWitnessUtxo != null) {
+                        scriptPubKey = this.nonWitnessUtxo.getOutputs().get((int)transaction.getInputs().get(index).getOutpoint().getIndex()).getScript();
+                    } else if(this.witnessUtxo != null) {
+                        scriptPubKey = this.witnessUtxo.getScript();
+                        if(!ScriptPattern.isP2WPKH(redeemScript) && !ScriptPattern.isP2WSH(redeemScript)) { //Witness UTXO should only be provided for P2SH-P2WPKH or P2SH-P2WSH
+                            throw new IllegalStateException("Witness UTXO provided but redeem script is not P2WPKH or P2WSH");
+                        }
+                    }
+                    if(scriptPubKey == null || !ScriptPattern.isP2SH(scriptPubKey)) {
+                        throw new IllegalStateException("PSBT provided a redeem script for a transaction output that does not need one");
+                    }
+                    if(!Arrays.equals(Utils.sha256hash160(redeemScript.getProgram()), scriptPubKey.getPubKeyHash())) {
+                        throw new IllegalStateException("Redeem script hash does not match transaction output script pubkey hash " + Hex.toHexString(scriptPubKey.getPubKeyHash()));
+                    }
+
                     this.redeemScript = redeemScript;
                     log.debug("Found input redeem script hex " + Hex.toHexString(redeemScript.getProgram()) + " script " + redeemScript);
                     break;
                 case PSBT_IN_WITNESS_SCRIPT:
                     entry.checkOneByteKey();
                     Script witnessScript = new Script(entry.getData());
+                    byte[] pubKeyHash = null;
+                    if(this.redeemScript != null && ScriptPattern.isP2WSH(this.redeemScript)) { //P2SH-P2WSH
+                        pubKeyHash = this.redeemScript.getPubKeyHash();
+                    } else if(this.witnessUtxo != null && ScriptPattern.isP2WSH(this.witnessUtxo.getScript())) { //P2WSH
+                        pubKeyHash = this.witnessUtxo.getScript().getPubKeyHash();
+                    }
+                    if(pubKeyHash == null) {
+                        throw new IllegalStateException("Witness script provided without P2WSH witness utxo or P2SH redeem script");
+                    } else if(!Arrays.equals(Sha256Hash.hash(witnessScript.getProgram()), pubKeyHash)) {
+                        throw new IllegalStateException("Witness script hash does not match provided pay to script hash " + Hex.toHexString(pubKeyHash));
+                    }
                     this.witnessScript = witnessScript;
                     log.debug("Found input witness script hex " + Hex.toHexString(witnessScript.getProgram()) + " script " + witnessScript);
                     break;
@@ -123,7 +163,7 @@ public class PSBTInput {
                     log.debug("Found proprietary input " + Hex.toHexString(entry.getKeyData()) + ": " + Hex.toHexString(entry.getData()));
                     break;
                 default:
-                    throw new IllegalStateException("PSBT input not recognized key type: " + entry.getKeyType());
+                    log.warn("PSBT input not recognized key type: " + entry.getKeyType());
             }
         }
     }

src/main/java/com/craigraw/drongo/psbt/PSBTOutput.java

@@ -52,7 +52,7 @@ public class PSBTOutput {
                     log.debug("Found proprietary output " + Hex.toHexString(entry.getKeyData()) + ": " + Hex.toHexString(entry.getData()));
                     break;
                 default:
-                    throw new IllegalStateException("PSBT output not recognized key type: " + entry.getKeyType());
+                    log.warn("PSBT output not recognized key type: " + entry.getKeyType());
             }
         }
     }

src/test/java/com/craigraw/drongo/psbt/PSBTTest.java

@@ -1,5 +1,7 @@
 package com.craigraw.drongo.psbt;
 
+import com.craigraw.drongo.protocol.Transaction;
+import org.bouncycastle.util.encoders.Hex;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -148,4 +150,139 @@ public class PSBTTest {
 
         Assert.assertEquals(0, psbt1.getPsbtOutputs().get(0).getDerivedPublicKeys().size());
     }
+
+    @Test
+    public void validP2pkhP2shP2wpkhOneInputEmptyOutputs() {
+        String psbt = "cHNidP8BAKACAAAAAqsJSaCMWvfEm4IS9Bfi8Vqz9cM9zxU4IagTn4d6W3vkAAAAAAD+////qwlJoIxa98SbghL0F+LxWrP1wz3PFTghqBOfh3pbe+QBAAAAAP7///8CYDvqCwAAAAAZdqkUdopAu9dAy+gdmI5x3ipNXHE5ax2IrI4kAAAAAAAAGXapFG9GILVT+glechue4O/p+gOcykWXiKwAAAAAAAEHakcwRAIgR1lmF5fAGwNrJZKJSGhiGDR9iYZLcZ4ff89X0eURZYcCIFMJ6r9Wqk2Ikf/REf3xM286KdqGbX+EhtdVRs7tr5MZASEDXNxh/HupccC1AaZGoqg7ECy0OIEhfKaC3Ibi1z+ogpIAAQEgAOH1BQAAAAAXqRQ1RebjO4MsRwUPJNPuuTycA5SLx4cBBBYAFIXRNTfy4mVAWjTbr6nj3aAfuCMIAAAA";
+        PSBT psbt1 = PSBT.fromString(psbt);
+        Assert.assertEquals(2, psbt1.getPsbtInputs().size());
+        Assert.assertEquals(2, psbt1.getPsbtOutputs().size());
+
+        Assert.assertEquals("47304402204759661797c01b036b25928948686218347d89864b719e1f7fcf57d1e511658702205309eabf56aa4d8891ffd111fdf1336f3a29da866d7f8486d75546ceedaf93190121035cdc61fc7ba971c0b501a646a2a83b102cb43881217ca682dc86e2d73fa88292", psbt1.getPsbtInputs().get(0).getFinalScriptSig().getProgramAsHex());
+        Assert.assertEquals("OP_HASH160 3545e6e33b832c47050f24d3eeb93c9c03948bc7 OP_EQUAL", psbt1.getPsbtInputs().get(1).getWitnessUtxo().getScript().toString());
+        Assert.assertEquals("001485d13537f2e265405a34dbafa9e3dda01fb82308", psbt1.getPsbtInputs().get(1).getRedeemScript().getProgramAsHex());
+    }
+
+    @Test
+    public void validP2pkhWithSigHash() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+        Assert.assertEquals(Transaction.SigHash.ALL, psbt1.getPsbtInputs().get(0).getSigHash());
+        Assert.assertEquals(301L, psbt1.getFee().longValue());
+    }
+
+    @Test
+    public void validP2pkhP2shP2wpkhTwoInputsTwoOutputs() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("001485d13537f2e265405a34dbafa9e3dda01fb82308", psbt1.getPsbtInputs().get(1).getRedeemScript().getProgramAsHex());
+        Assert.assertEquals("b4a6ba67", psbt1.getPsbtOutputs().get(0).getDerivedPublicKeys().values().iterator().next().getMasterFingerprint());
+        Assert.assertEquals("m/0'/0'/2'", psbt1.getPsbtOutputs().get(0).getDerivedPublicKeys().values().iterator().next().getDerivationPath());
+    }
+
+    @Test
+    public void validP2shP2wpkhMultisigPartialSignature() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("0020771fd18ad459666dd49f3d564e3dbc42f4c84774e360ada16816a8ed488d5681", psbt1.getPsbtInputs().get(0).getRedeemScript().getProgramAsHex());
+        Assert.assertEquals("522103b1341ccba7683b6af4f1238cd6e97e7167d569fac47f1e48d47541844355bd462103de55d1e1dac805e3f8a58c1fbf9b94c02f3dbaafe127fefca4995f26f82083bd52ae", psbt1.getPsbtInputs().get(0).getWitnessScript().getProgramAsHex());
+        Assert.assertEquals("304302200424b58effaaa694e1559ea5c93bbfd4a89064224055cdf070b6771469442d07021f5c8eb0fea6516d60b8acb33ad64ede60e8785bfb3aa94b99bdf86151db9a9a01", Hex.toHexString(psbt1.getPsbtInputs().get(0).getPartialSignatures().values().iterator().next()));
+    }
+
+    @Test
+    public void validP2wshMultisigWithXpubs() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("00202c5486126c4978079a814e13715d65f36459e4d6ccaded266d0508645bafa632", psbt1.getPsbtInputs().get(0).getWitnessUtxo().getScript().getProgramAsHex());
+        Assert.assertEquals("5221029da12cdb5b235692b91536afefe5c91c3ab9473d8e43b533836ab456299c88712103372b34234ed7cf9c1fea5d05d441557927be9542b162eb02e1ab2ce80224c00b52ae", psbt1.getPsbtInputs().get(0).getWitnessScript().getProgramAsHex());
+    }
+
+    @Test
+    public void validUnknownInputs() {
+        String psbt = "cHNidP8BAD8CAAAAAf//////////////////////////////////////////AAAAAAD/////AQAAAAAAAAAAA2oBAAAAAAAACg8BAgMEBQYHCAkPAQIDBAUGBwgJCgsMDQ4PAAA=";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals(1, psbt1.getPsbtInputs().size());
+    }
+
+    @Test
+    public void validP2wpkh2InputsWithXpub() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("27569c50", psbt1.getExtendedPublicKeys().get(0).getMasterFingerprint());
+        Assert.assertEquals("m/49'/0'/0'", psbt1.getExtendedPublicKeys().get(0).getKeyDerivationPath());
+        Assert.assertEquals(2, psbt1.getPsbtInputs().size());
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void invalidWitnessUtxoForNonWitnessInput() {
+        String psbt = "cHNidP8BAKACAAAAAqsJSaCMWvfEm4IS9Bfi8Vqz9cM9zxU4IagTn4d6W3vkAAAAAAD+////qwlJoIxa98SbghL0F+LxWrP1wz3PFTghqBOfh3pbe+QBAAAAAP7///8CYDvqCwAAAAAZdqkUdopAu9dAy+gdmI5x3ipNXHE5ax2IrI4kAAAAAAAAGXapFG9GILVT+glechue4O/p+gOcykWXiKwAAAAAAAEBItPf9QUAAAAAGXapFNSO0xELlAFMsRS9Mtb00GbcdCVriKwAAQEgAOH1BQAAAAAXqRQ1RebjO4MsRwUPJNPuuTycA5SLx4cBBBYAFIXRNTfy4mVAWjTbr6nj3aAfuCMIACICAurVlmh8qAYEPtw94RbN8p1eklfBls0FXPaYyNAr8k6ZELSmumcAAACAAAAAgAIAAIAAIgIDlPYr6d8ZlSxVh3aK63aYBhrSxKJciU9H2MFitNchPQUQtKa6ZwAAAIABAACAAgAAgAA=";
+        PSBT psbt1 = PSBT.fromString(psbt);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void invalidNonWitnessUtxoDoesNotMatchRedeemScriptPubKey() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void invalidWitnessUtxoDoesNotMatchRedeemScriptPubKey() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void invalidWitnessUtxoDoesNotMatchWitnessScriptPubKey() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+    }
+
+    @Test
+    public void validCreatorTwoInputsTwoOutputs() {
+        String psbt = "cHNidP8BAJoCAAAAAljoeiG1ba8MI76OcHBFbDNvfLqlyHV5JPVFiHuyq911AAAAAAD/////g40EJ9DsZQpoqka7CwmK6kQiwHGyyng1Kgd5WdB86h0BAAAAAP////8CcKrwCAAAAAAWABTYXCtx0AYLCcmIauuBXlCZHdoSTQDh9QUAAAAAFgAUAK6pouXw+HaliN9VRuh0LR2HAI8AAAAAAAAAAAA=";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals(2, psbt1.getPsbtInputs().size());
+        Assert.assertEquals(2, psbt1.getPsbtOutputs().size());
+    }
+
+    @Test
+    public void validUpdaterTwoInputsTwoOutputs() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("75ddabb27b8845f5247975c8a5ba7c6f336c4570708ebe230caf6db5217ae858", psbt1.getPsbtInputs().get(0).getNonWitnessUtxo().getTxId().toString());
+        Assert.assertEquals(null, psbt1.getPsbtInputs().get(0).getWitnessUtxo());
+    }
+
+    @Test
+    public void validSignerTwoInputsTwoOutputs() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("3044022065f45ba5998b59a27ffe1a7bed016af1f1f90d54b3aa8f7450aa5f56a25103bd02207f724703ad1edb96680b284b56d4ffcb88f7fb759eabbe08aa30f29b851383d201", Hex.toHexString(psbt1.getPsbtInputs().get(1).getPartialSignatures().values().iterator().next()));
+    }
+
+    @Test
+    public void validCombinerTwoInputsTwoOutputs() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("3044022062eb7a556107a7c73f45ac4ab5a1dddf6f7075fb1275969a7f383efff784bcb202200c05dbb7470dbf2f08557dd356c7325c1ed30913e996cd3840945db12228da5f01", Hex.toHexString(psbt1.getPsbtInputs().get(1).getPartialSignatures().values().iterator().next()));
+    }
+
+    @Test
+    public void validFinalizerTwoInputsTwoOutputs() {
+        String psbt = "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";
+        PSBT psbt1 = PSBT.fromString(psbt);
+
+        Assert.assertEquals("00473044022074018ad4180097b873323c0015720b3684cc8123891048e7dbcd9b55ad679c99022073d369b740e3eb53dcefa33823c8070514ca55a7dd9544f157c167913261118c01483045022100f61038b308dc1da865a34852746f015772934208c6d24454393cd99bdf2217770220056e675a675a6d0a02b85b14e5e29074d8a25a9b5760bea2816f661910a006ea01475221029583bf39ae0a609747ad199addd634fa6108559d6c5cd39b4c2183f1ab96e07f2102dab61ff49a14db6a7d02b0cd1fbb78fc4b18312b5b4e54dae4dba2fbfef536d752ae", psbt1.getPsbtInputs().get(0).getFinalScriptSig().getProgramAsHex());
+        Assert.assertEquals("2200208c2353173743b595dfb4a07b72ba8e42e3797da74e87fe7d9d7497e3b2028903", psbt1.getPsbtInputs().get(1).getFinalScriptSig().getProgramAsHex());
+        Assert.assertEquals("0400473044022062eb7a556107a7c73f45ac4ab5a1dddf6f7075fb1275969a7f383efff784bcb202200c05dbb7470dbf2f08557dd356c7325c1ed30913e996cd3840945db12228da5f01473044022065f45ba5998b59a27ffe1a7bed016af1f1f90d54b3aa8f7450aa5f56a25103bd02207f724703ad1edb96680b284b56d4ffcb88f7fb759eabbe08aa30f29b851383d20147522103089dc10c7ac6db54f91329af617333db388cead0c231f723379d1b99030b02dc21023add904f3d6dcf59ddb906b0dee23529b7ffb9ed50e5e86151926860221f0e7352ae", psbt1.getPsbtInputs().get(1).getFinalScriptWitness().getProgramAsHex());
+    }
 }