Removed digest from stateless has interface and pushed it down, as some hashes don't support keys or different hash lengths

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/hash/Hash.kt

@@ -39,11 +39,6 @@ interface UpdatableHash : Hash {
 
 interface StatelessHash : Hash {
 
-    fun digest(
-        inputMessage: UByteArray = ubyteArrayOf(),
-        key: UByteArray = ubyteArrayOf(),
-        hashLength: Int = MAX_HASH_BYTES
-    ): UByteArray
 }
 
 fun String.encodeToUByteArray() : UByteArray{

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/hash/blake2b/Blake2b.kt

@@ -21,5 +21,11 @@ interface Blake2b : UpdatableHash {
 interface Blake2bStateless : StatelessHash {
     override val MAX_HASH_BYTES: Int
         get() = Blake2bProperties.MAX_HASH_BYTES
+
+    fun digest(
+        inputMessage: UByteArray = ubyteArrayOf(),
+        key: UByteArray = ubyteArrayOf(),
+        hashLength: Int = MAX_HASH_BYTES
+    ): UByteArray
 }
 

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/hash/sha/Sha256.kt

@@ -19,4 +19,8 @@ interface Sha256 : UpdatableHash {
 interface StatelessSha256 : StatelessHash {
     override val MAX_HASH_BYTES: Int
         get() = Sha256Properties.MAX_HASH_BYTES
+
+    fun digest(
+        inputMessage: UByteArray = ubyteArrayOf()
+    ): UByteArray
 }

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/hash/sha/Sha512.kt

@@ -18,4 +18,8 @@ interface Sha512 : UpdatableHash {
 interface StatelessSha512 : StatelessHash {
     override val MAX_HASH_BYTES: Int
         get() = Sha256Properties.MAX_HASH_BYTES
+
+    fun digest(
+        inputMessage: UByteArray = ubyteArrayOf()
+    ): UByteArray
 }