sup umi

core/src/main/java/org/bitcorej/chain/ChainStateProxy.java

@@ -59,6 +59,7 @@
 import org.bitcorej.chain.stellar.StellarStateProvider;
 import org.bitcorej.chain.stg.STGStateProvider;
 import org.bitcorej.chain.trx.TRXStateProvider;
+import org.bitcorej.chain.umi.UMIStateProvider;
 import org.bitcorej.chain.usdt.USDTStateProvider;
 import org.bitcorej.chain.vet.VETStateProvider;
 import org.bitcorej.chain.vrsc.VRSCStateProvider;
@@ -244,6 +245,9 @@ public class ChainStateProxy implements ChainState, UTXOState, USDTState, XMRSta
         SPRKStateProvider sprk = new SPRKStateProvider(Network.MAIN);
         services.put("SPRK", sprk);
         services.put("SPRK_MAIN", sprk);
+        UMIStateProvider umi = new UMIStateProvider();
+        services.put("UMI", umi);
+        services.put("UMI_MAIN", umi);
     }
 
     private ChainState provider;

core/src/main/java/org/bitcorej/chain/umi/UMIStateProvider.java

@@ -0,0 +1,49 @@
+package org.bitcorej.chain.umi;
+
+import iost.crypto.Ed25519;
+import iost.model.transaction.Signature;
+import org.bitcorej.chain.ChainState;
+import org.bitcorej.chain.KeyPair;
+import org.bitcorej.chain.Transaction;
+import org.bitcorej.crypto.Bech32;
+import org.bitcorej.utils.NumericUtil;
+import org.json.JSONObject;
+
+import java.util.List;
+
+public class UMIStateProvider implements ChainState {
+    @Override
+    public KeyPair generateKeyPair(String secret) {
+        Ed25519 keyPair = new Ed25519(NumericUtil.hexToBytes(secret));
+        return new KeyPair(NumericUtil.bytesToHex(keyPair.seckey()), Bech32.encode("umi", Bech32.toWords(keyPair.pubkey())));
+    }
+
+    @Override
+    public KeyPair generateKeyPair() {
+        return this.generateKeyPair(NumericUtil.bytesToHex(new Ed25519().seckey()));
+    }
+
+    @Override
+    public Boolean validateTx(String rawTx, String requestTx) {
+        return null;
+    }
+
+    @Override
+    public Transaction decodeRawTransaction(String rawTx) {
+        return null;
+    }
+
+    @Override
+    public String signRawTransaction(String rawTx, List<String> keys) {
+        JSONObject json = new JSONObject(rawTx);
+        String raw = json.getString("serialized");
+        String signData = json.getString("signatureHash");
+        Ed25519 keyPair = new Ed25519(NumericUtil.hexToBytes(keys.get(0)));
+        Signature sig = keyPair.sign(NumericUtil.hexToBytes(signData));
+        String signature = NumericUtil.bytesToHex(sig.signature);
+        JSONObject packedTx = new JSONObject();
+        packedTx.put("serialized", raw);
+        packedTx.put("signature", signature);
+        return packedTx.toString();
+    }
+}

examples/src/main/java/org/bitcorej/examples/ExampleUMIWallet.java

@@ -0,0 +1,2 @@
+package org.bitcorej.examples;public class ExampleUMIWallet {
+}