@@ -42,10 +42,15 @@
 /*!
  * @brief The block size of the cryptographic hash, in bytes.
  */
 @property (readonly, nonatomic) size_t blockSize;
 
+/*!
+ * @brief Whether data may be stored in swappable memory.
+ */
+@property (readonly, nonatomic) bool allowsSwappableMemory;
+
 /*!
  * @brief A boolean whether the hash has already been calculated.
  */
 @property (readonly, nonatomic, getter=isCalculated) bool calculated;
 
@@ -59,13 +64,14 @@
     OF_RETURNS_INNER_POINTER;
 
 /*!
  * @brief Creates a new cryptographic hash.
  *
- * @return A new autoreleased OFCryptoHash
+ * @return A new autoreleased cryptographic hash
  */
-+ (instancetype)cryptoHash;
++ (instancetype)cryptoHashWithAllowsSwappableMemory:
+    (bool)allowsSwappableMemory;
 
 /*!
  * @brief Returns the digest size of the cryptographic hash, in bytes.
  *
  * @return The digest size of the cryptographic hash, in bytes
@@ -77,10 +83,19 @@
  *
  * @return The block size of the cryptographic hash, in bytes
  */
 + (size_t)blockSize;
 
+/*!
+ * @brief Initializes an already allocated cryptographic hash.
+ *
+ * @return An initialized cryptographic hash
+ */
+- (instancetype)initWithAllowsSwappableMemory: (bool)allowsSwappableMemory;
+
+- (instancetype)init OF_UNAVAILABLE;
+
 /*!
  * @brief Adds a buffer to the cryptographic hash to be calculated.
  *
  * @param buffer The buffer which should be included into the calculation
  * @param length The length of the buffer