Add BlockCipher::block_size for source compatability with 1.9

1 files changed, 5 insertions, 0 deletions

diff --git a/src/block/block_cipher.h b/src/block/block_cipher.h
index 01c45af04..8db959f60 100644
--- a/src/block/block_cipher.h
+++ b/src/block/block_cipher.h
@@ -39,6 +39,11 @@ class BOTAN_DLL BlockCipher : public SymmetricAlgorithm
       const u32bit BLOCK_SIZE;
 
       /**
+      * @return block size of this algorithm
+      */
+      size_t block_size() const { return BLOCK_SIZE; }
+
+      /**
       * Encrypt a block.
       * @param in The plaintext block to be encrypted as a byte array.
       * Must be of length BLOCK_SIZE.