diff --git a/crypto/src/main/kotlin/org/openrs2/crypto/Pkcs12KeyStore.kt b/crypto/src/main/kotlin/org/openrs2/crypto/Pkcs12KeyStore.kt
index 7f26d6b7..f47286ce 100644
--- a/crypto/src/main/kotlin/org/openrs2/crypto/Pkcs12KeyStore.kt
+++ b/crypto/src/main/kotlin/org/openrs2/crypto/Pkcs12KeyStore.kt
@@ -51,6 +51,7 @@ public class Pkcs12KeyStore private constructor(privateKeyEntry: KeyStore.Privat
         private val SHA256_WITH_RSA = AlgorithmIdentifier(PKCSObjectIdentifiers.sha256WithRSAEncryption)
         private val SHA256 = AlgorithmIdentifier(NISTObjectIdentifiers.id_sha256)
 
+        @JvmStatic
         public fun open(path: Path, signerName: String): Pkcs12KeyStore {
             val keyStore = KeyStore.getInstance("PKCS12")
             if (Files.exists(path)) {
diff --git a/crypto/src/main/kotlin/org/openrs2/crypto/Whirlpool.kt b/crypto/src/main/kotlin/org/openrs2/crypto/Whirlpool.kt
index 93570965..0fbd0335 100644
--- a/crypto/src/main/kotlin/org/openrs2/crypto/Whirlpool.kt
+++ b/crypto/src/main/kotlin/org/openrs2/crypto/Whirlpool.kt
@@ -266,6 +266,8 @@ public class Whirlpool {
             }
         }
 
+        @JvmOverloads
+        @JvmStatic
         public fun whirlpool(data: ByteArray, off: Int = 0, len: Int = data.size): ByteArray {
             val source: ByteArray
             if (off <= 0) {
diff --git a/crypto/src/main/kotlin/org/openrs2/crypto/Xtea.kt b/crypto/src/main/kotlin/org/openrs2/crypto/Xtea.kt
index eff2db8e..214387c5 100644
--- a/crypto/src/main/kotlin/org/openrs2/crypto/Xtea.kt
+++ b/crypto/src/main/kotlin/org/openrs2/crypto/Xtea.kt
@@ -32,18 +32,22 @@ public data class XteaKey(
     }
 
     public companion object {
+        @JvmStatic
         public val ZERO: XteaKey = XteaKey(0, 0, 0, 0)
 
+        @JvmStatic
         public fun fromIntArray(a: IntArray): XteaKey {
             require(a.size == 4)
 
             return XteaKey(a[0], a[1], a[2], a[3])
         }
 
+        @JvmStatic
         public fun fromHex(s: String): XteaKey {
             return fromHexOrNull(s) ?: throw IllegalArgumentException()
         }
 
+        @JvmStatic
         public fun fromHexOrNull(s: String): XteaKey? {
             if (s.length != 32) {
                 return null