@@ -281,10 +281,60 @@
 	if (!OFSizeEqual(rect1.size, rect2.size))
 		return false;
 
 	return true;
 }
+
+/**
+ * @brief Adds the specified byte to the hash.
+ *
+ * @param hash A pointer to a hash to add the byte to
+ * @param byte The byte to add to the hash
+ */
+static OF_INLINE void
+OFHashAdd(unsigned long *_Nonnull hash, unsigned char byte)
+{
+	uint32_t tmp = (uint32_t)*hash;
+
+	tmp += byte;
+	tmp += tmp << 10;
+	tmp ^= tmp >> 6;
+
+	*hash = tmp;
+}
+
+/**
+ * @brief Adds the specified hash to the hash.
+ *
+ * @param hash A pointer to a hash to add the hash to
+ * @param otherHash The hash to add to the hash
+ */
+static OF_INLINE void
+OFHashAddHash(unsigned long *_Nonnull hash, unsigned long otherHash)
+{
+	OFHashAdd(hash, (otherHash >> 24) & 0xFF);
+	OFHashAdd(hash, (otherHash >> 16) & 0xFF);
+	OFHashAdd(hash, (otherHash >>  8) & 0xFF);
+	OFHashAdd(hash, otherHash & 0xFF);
+}
+
+/**
+ * @brief Finalizes the specified hash.
+ *
+ * @param hash A pointer to the hash to finalize
+ */
+static OF_INLINE void
+OFHashFinalize(unsigned long *_Nonnull hash)
+{
+	uint32_t tmp = (uint32_t)*hash;
+
+	tmp += tmp << 3;
+	tmp ^= tmp >> 11;
+	tmp += tmp << 15;
+
+	*hash = tmp;
+}
 
 static const size_t OFNotFound = SIZE_MAX;
 
 #ifdef __OBJC__
 @class OFMethodSignature;
@@ -1330,10 +1380,17 @@
  * @brief Returns 64 bit or non-cryptographical randomness.
  *
  * @return 64 bit or non-cryptographical randomness
  */
 extern uint64_t OFRandom64(void);
+
+/**
+ * @brief Initializes the specified hash.
+ *
+ * @param hash A pointer to the hash to initialize
+ */
+extern void OFHashInit(unsigned long *_Nonnull hash);
 #ifdef __cplusplus
 }
 #endif
 
 OF_ASSUME_NONNULL_END