Integrate updated HDWallet

app/build.gradle

@@ -51,7 +51,7 @@ dependencies {
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 
-    implementation 'com.github.horizontalsystems:hd-wallet-kit-android:ff1e364'
+    implementation 'com.github.horizontalsystems:hd-wallet-kit-android:a450abb'
 
     implementation 'androidx.appcompat:appcompat:1.4.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.2'

ethereumkit/build.gradle

@@ -56,7 +56,7 @@ dependencies {
 
     implementation 'org.bouncycastle:bcpkix-jdk15on:1.65'
 
-    implementation 'com.github.horizontalsystems:hd-wallet-kit-android:ff1e364'
+    implementation 'com.github.horizontalsystems:hd-wallet-kit-android:a450abb'
 
     implementation 'io.reactivex.rxjava2:rxjava:2.2.19'
     implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'

ethereumkit/src/main/java/io/horizontalsystems/ethereumkit/core/EthereumKit.kt

@@ -12,6 +12,7 @@ import io.horizontalsystems.ethereumkit.api.jsonrpc.models.RpcTransactionReceipt
 import io.horizontalsystems.ethereumkit.api.models.AccountState
 import io.horizontalsystems.ethereumkit.api.models.EthereumKitState
 import io.horizontalsystems.ethereumkit.api.storage.ApiStorage
+import io.horizontalsystems.ethereumkit.core.signer.Signer
 import io.horizontalsystems.ethereumkit.core.storage.Eip20Storage
 import io.horizontalsystems.ethereumkit.core.storage.TransactionStorage
 import io.horizontalsystems.ethereumkit.core.storage.TransactionSyncerStateStorage
@@ -25,7 +26,6 @@ import io.horizontalsystems.ethereumkit.network.*
 import io.horizontalsystems.ethereumkit.transactionsyncers.EthereumTransactionSyncer
 import io.horizontalsystems.ethereumkit.transactionsyncers.InternalTransactionSyncer
 import io.horizontalsystems.ethereumkit.transactionsyncers.TransactionSyncManager
-import io.horizontalsystems.hdwalletkit.HDWallet
 import io.horizontalsystems.hdwalletkit.Mnemonic
 import io.reactivex.BackpressureStrategy
 import io.reactivex.Flowable
@@ -358,7 +358,7 @@ class EthereumKit(
             walletId: String
         ): EthereumKit {
             val seed = Mnemonic().toSeed(words, passphrase)
-            val privateKey = privateKey(seed, chain)
+            val privateKey = Signer.privateKey(seed, chain)
             val address = ethereumAddress(privateKey)
             return getInstance(application, address, chain, rpcSource, transactionSource, walletId)
         }
@@ -434,11 +434,6 @@ class EthereumKit(
             return ethereumKit
         }
 
-        fun privateKey(seed: ByteArray, chain: Chain): BigInteger {
-            val hdWallet = HDWallet(seed, chain.coinType)
-            return hdWallet.privateKey(0, 0, true).privKey
-        }
-
         fun clear(context: Context, chain: Chain, walletId: String) {
             EthereumDatabaseManager.clear(context, chain, walletId)
         }

ethereumkit/src/main/java/io/horizontalsystems/ethereumkit/core/signer/Signer.kt

@@ -2,10 +2,14 @@ package io.horizontalsystems.ethereumkit.core.signer
 
 import io.horizontalsystems.ethereumkit.core.TransactionBuilder
 import io.horizontalsystems.ethereumkit.core.TransactionSigner
+import io.horizontalsystems.ethereumkit.core.hexStringToByteArrayOrNull
+import io.horizontalsystems.ethereumkit.core.signer.Signer.PrivateKeyValidationError.InvalidDataLength
+import io.horizontalsystems.ethereumkit.core.signer.Signer.PrivateKeyValidationError.InvalidDataString
 import io.horizontalsystems.ethereumkit.crypto.CryptoUtils
 import io.horizontalsystems.ethereumkit.crypto.EIP712Encoder
 import io.horizontalsystems.ethereumkit.crypto.TypedData
 import io.horizontalsystems.ethereumkit.models.*
+import io.horizontalsystems.ethereumkit.spv.core.toBigInteger
 import io.horizontalsystems.hdwalletkit.HDWallet
 import io.horizontalsystems.hdwalletkit.Mnemonic
 import java.math.BigInteger
@@ -57,9 +61,8 @@ class Signer(
     }
 
     companion object {
-        fun getInstance(seed: ByteArray, chain: Chain): Signer {
-            val privateKey = privateKey(seed, chain)
-            val address = ethereumAddress(privateKey)
+        fun getInstance(privateKey: BigInteger, chain: Chain): Signer {
+            val address = address(privateKey)
 
             val transactionSigner = TransactionSigner(privateKey, chain.id)
             val transactionBuilder = TransactionBuilder(address, chain.id)
@@ -68,6 +71,10 @@ class Signer(
             return Signer(transactionBuilder, transactionSigner, ethSigner)
         }
 
+        fun getInstance(seed: ByteArray, chain: Chain): Signer {
+            return getInstance(privateKey(seed, chain), chain)
+        }
+
         fun address(
             words: List<String>,
             passphrase: String = "",
@@ -78,7 +85,7 @@ class Signer(
 
         fun address(seed: ByteArray, chain: Chain): Address {
             val privateKey = privateKey(seed, chain)
-            return ethereumAddress(privateKey)
+            return address(privateKey)
         }
 
         fun privateKey(
@@ -89,16 +96,31 @@ class Signer(
             return privateKey(Mnemonic().toSeed(words, passphrase), chain)
         }
 
+        @Throws(InvalidDataString::class, InvalidDataLength::class)
+        fun privateKey(value: String): BigInteger {
+            val data = value.hexStringToByteArrayOrNull()
+                ?: throw InvalidDataString()
+            if (data.size != 32) {
+                throw InvalidDataLength()
+            }
+            return data.toBigInteger()
+        }
+
         fun privateKey(seed: ByteArray, chain: Chain): BigInteger {
-            val hdWallet = HDWallet(seed, chain.coinType)
+            val hdWallet = HDWallet(seed, chain.coinType, HDWallet.Purpose.BIP44)
             return hdWallet.privateKey(0, 0, true).privKey
         }
 
-        fun ethereumAddress(privateKey: BigInteger): Address {
+        fun address(privateKey: BigInteger): Address {
             val publicKey =
                 CryptoUtils.ecKeyFromPrivate(privateKey).publicKeyPoint.getEncoded(false).drop(1)
                     .toByteArray()
             return Address(CryptoUtils.sha3(publicKey).takeLast(20).toByteArray())
         }
     }
+
+    open class PrivateKeyValidationError : Exception() {
+        class InvalidDataString : PrivateKeyValidationError()
+        class InvalidDataLength : PrivateKeyValidationError()
+    }
 }