diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/block/cascade/cascade.h')
-rw-r--r-- | comm/third_party/botan/src/lib/block/cascade/cascade.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/block/cascade/cascade.h b/comm/third_party/botan/src/lib/block/cascade/cascade.h new file mode 100644 index 0000000000..26f5133811 --- /dev/null +++ b/comm/third_party/botan/src/lib/block/cascade/cascade.h @@ -0,0 +1,57 @@ +/* +* Block Cipher Cascade +* (C) 2010 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_CASCADE_H_ +#define BOTAN_CASCADE_H_ + +#include <botan/block_cipher.h> + +BOTAN_FUTURE_INTERNAL_HEADER(cascade.h) + +namespace Botan { + +/** +* Block Cipher Cascade +*/ +class BOTAN_PUBLIC_API(2,0) Cascade_Cipher final : public BlockCipher + { + public: + void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override; + void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override; + + size_t block_size() const override { return m_block; } + + Key_Length_Specification key_spec() const override + { + return Key_Length_Specification(m_cipher1->maximum_keylength() + + m_cipher2->maximum_keylength()); + } + + void clear() override; + std::string name() const override; + BlockCipher* clone() const override; + + /** + * Create a cascade of two block ciphers + * @param cipher1 the first cipher + * @param cipher2 the second cipher + */ + Cascade_Cipher(BlockCipher* cipher1, BlockCipher* cipher2); + + Cascade_Cipher(const Cascade_Cipher&) = delete; + Cascade_Cipher& operator=(const Cascade_Cipher&) = delete; + private: + void key_schedule(const uint8_t[], size_t) override; + + size_t m_block; + std::unique_ptr<BlockCipher> m_cipher1, m_cipher2; + }; + + +} + +#endif |