diff --git a/build.gradle.kts b/build.gradle.kts
index 014871c..c8c1c91 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -22,6 +22,7 @@ kotlin {
         commonMain.dependencies {
             implementation(libs.mac)
             implementation(libs.hash)
+            implementation(libs.bytearray)
         }
     }
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index aa2fdd9..a088456 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,7 +1,8 @@
 [versions]
 kotlin = "2.1.20"
-mac = "1.1.0"
-hash = "1.2.0"
+mac = "1.1.2"
+hash = "1.2.2"
+bytearray = "1.1.1"
 
 [plugins]
 multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
@@ -9,3 +10,4 @@ multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotl
 [libraries]
 mac = { module = "com.infendro:mac", version.ref = "mac" }
 hash = { module = "com.infendro:hash", version.ref = "hash" }
+bytearray = { module = "com.infendro:bytearray", version.ref = "bytearray" }
diff --git a/src/commonMain/kotlin/com/infendro/kdf/PBKDF2.kt b/src/commonMain/kotlin/com/infendro/kdf/PBKDF2.kt
index 95f4625..37fe773 100644
--- a/src/commonMain/kotlin/com/infendro/kdf/PBKDF2.kt
+++ b/src/commonMain/kotlin/com/infendro/kdf/PBKDF2.kt
@@ -1,9 +1,9 @@
 package com.infendro.kdf
 
+import com.infendro.bytearray.addAll
+import com.infendro.bytearray.toByteArray
+import com.infendro.bytearray.xor
 import com.infendro.hash.HashFunction
-import com.infendro.kdf.util.addAll
-import com.infendro.kdf.util.toByteArray
-import com.infendro.kdf.util.xor
 import com.infendro.mac.HMAC
 
 class PBKDF2(
diff --git a/src/commonMain/kotlin/com/infendro/kdf/util/ByteArray.kt b/src/commonMain/kotlin/com/infendro/kdf/util/ByteArray.kt
deleted file mode 100644
index 09aaaeb..0000000
--- a/src/commonMain/kotlin/com/infendro/kdf/util/ByteArray.kt
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.infendro.kdf.util
-
-import kotlin.experimental.xor
-
-internal infix fun ByteArray.xor(
-    that: ByteArray,
-): ByteArray {
-    if (this.size != that.size) throw Exception()
-
-    return ByteArray(size) { i ->
-        this[i] xor that[i]
-    }
-}
-
-internal fun MutableCollection<Byte>.addAll(
-    bytes: ByteArray,
-): Boolean {
-    return addAll(bytes.toList())
-}
-
-internal fun UInt.toByteArray(): ByteArray {
-    return ByteArray(4) { i ->
-        val offset = (3 - i) * 8
-        (this shr offset).toByte()
-    }
-}