Botan 2.19.1
Crypto and TLS for C&
cascade.h
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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
14
15namespace Botan {
16
17/**
18* Block Cipher Cascade
19*/
21 {
22 public:
23 void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
24 void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
25
26 size_t block_size() const override { return m_block; }
27
29 {
30 return Key_Length_Specification(m_cipher1->maximum_keylength() +
31 m_cipher2->maximum_keylength());
32 }
33
34 void clear() override;
35 std::string name() const override;
36 BlockCipher* clone() 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(BlockCipher* cipher1, BlockCipher* cipher2);
44
47 private:
48 void key_schedule(const uint8_t[], size_t) override;
49
50 size_t m_block;
51 std::unique_ptr<BlockCipher> m_cipher1, m_cipher2;
52 };
53
54
55}
56
57#endif
virtual BlockCipher * clone() const =0
virtual void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
virtual void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
Cascade_Cipher & operator=(const Cascade_Cipher &)=delete
Key_Length_Specification key_spec() const override
Definition: cascade.h:28
Cascade_Cipher(const Cascade_Cipher &)=delete
size_t block_size() const override
Definition: cascade.h:26
virtual std::string name() const =0
virtual void clear()=0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:136
Definition: alg_id.cpp:13