Coverage Report

Created: 2023-02-22 06:39

/src/botan/build/include/botan/internal/cascade.h
Line
Count
Source (jump to first uncovered line)
1
/*
2
* Block Cipher Cascade
3
* (C) 2010 Jack Lloyd
4
*
5
* Botan is released under the Simplified BSD License (see license.txt)
6
*/
7
8
#ifndef BOTAN_CASCADE_H_
9
#define BOTAN_CASCADE_H_
10
11
#include <botan/block_cipher.h>
12
13
namespace Botan {
14
15
/**
16
* Block Cipher Cascade
17
*/
18
class Cascade_Cipher final : public BlockCipher
19
   {
20
   public:
21
      void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
22
      void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
23
24
0
      size_t block_size() const override { return m_block_size; }
25
26
      Key_Length_Specification key_spec() const override
27
0
         {
28
0
         return Key_Length_Specification(m_cipher1->maximum_keylength() +
29
0
                                         m_cipher2->maximum_keylength());
30
0
         }
31
32
      void clear() override;
33
      std::string name() const override;
34
      std::unique_ptr<BlockCipher> new_object() const override;
35
36
      bool has_keying_material() const override;
37
38
      /**
39
      * Create a cascade of two block ciphers
40
      * @param cipher1 the first cipher
41
      * @param cipher2 the second cipher
42
      */
43
      Cascade_Cipher(std::unique_ptr<BlockCipher> cipher1,
44
                     std::unique_ptr<BlockCipher> cipher2);
45
46
      Cascade_Cipher(const Cascade_Cipher&) = delete;
47
      Cascade_Cipher& operator=(const Cascade_Cipher&) = delete;
48
   private:
49
      void key_schedule(const uint8_t[], size_t) override;
50
51
      std::unique_ptr<BlockCipher> m_cipher1, m_cipher2;
52
      size_t m_block_size;
53
   };
54
55
56
}
57
58
#endif