1 files changed, 6 insertions, 1 deletions
diff --git a/src/hash/hash.h b/src/hash/hash.h
index cdf90f184..b331debc2 100644
--- a/src/hash/hash.h
+++ b/src/hash/hash.h
@@ -18,12 +18,17 @@ namespace Botan {
 */
 class BOTAN_DLL HashFunction : public BufferedComputation
    {
-   public:
       /**
       * The hash block size as defined for this algorithm.
       */
       const u32bit HASH_BLOCK_SIZE;
 
+   public:
+      /**
+      * The hash block size as defined for this algorithm
+      */
+      virtual size_t hash_block_size() const { return HASH_BLOCK_SIZE; }
+
       /**
       * Get a new object representing the same algorithm as *this
       */