diff options
Diffstat (limited to 'src/block/block_cipher.h')
| -rw-r--r-- | src/block/block_cipher.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/src/block/block_cipher.h b/src/block/block_cipher.h index 5f5e5e530..e522005b9 100644 --- a/src/block/block_cipher.h +++ b/src/block/block_cipher.h @@ -25,24 +25,17 @@ class BOTAN_DLL BlockCipher : public SymmetricAlgorithm * @param key_max the maximum key size * @param key_mod the modulo restriction on the key size */ - BlockCipher(u32bit block_size, - u32bit key_min, + BlockCipher(u32bit key_min, u32bit key_max = 0, u32bit key_mod = 1) : - SymmetricAlgorithm(key_min, key_max, key_mod), - BLOCK_SIZE(block_size) {} + SymmetricAlgorithm(key_min, key_max, key_mod) {} virtual ~BlockCipher() {} /** - * The block size of this algorithm. - */ - const u32bit BLOCK_SIZE; - - /** * @return block size of this algorithm */ - size_t block_size() const { return BLOCK_SIZE; } + virtual size_t block_size() const = 0; /** * @return native parallelism of this cipher in blocks @@ -122,6 +115,19 @@ class BOTAN_DLL BlockCipher : public SymmetricAlgorithm virtual void clear() = 0; }; +template<size_t N> +class BlockCipher_Fixed_Block_Size : public BlockCipher + { + public: + BlockCipher_Fixed_Block_Size(u32bit kmin, + u32bit kmax = 0, + u32bit kmod = 1) : + BlockCipher(kmin, kmax, kmod) {} + + enum { BLOCK_SIZE = N }; + size_t block_size() const { return N; } + }; + } #endif |