Botan  2.13.0
Crypto and TLS for C++11
blowfish.h
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1 /*
2 * Blowfish
3 * (C) 1999-2011 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_BLOWFISH_H_
9 #define BOTAN_BLOWFISH_H_
10 
11 #include <botan/block_cipher.h>
12 
14 
15 namespace Botan {
16 
17 /**
18 * Blowfish
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  /**
27  * Modified EKSBlowfish key schedule, used for bcrypt password hashing
28  */
29  void salted_set_key(const uint8_t key[], size_t key_length,
30  const uint8_t salt[], size_t salt_length,
31  const size_t workfactor, bool salt_first = false);
32 
33  BOTAN_DEPRECATED("Use Blowfish::salted_set_key taking salt length")
34  void eks_key_schedule(const uint8_t key[], size_t key_length,
35  const uint8_t salt[16], size_t workfactor)
36  {
37  salted_set_key(key, key_length, salt, 16, workfactor);
38  }
39 
40  void clear() override;
41  std::string name() const override { return "Blowfish"; }
42  BlockCipher* clone() const override { return new Blowfish; }
43  private:
44  void key_schedule(const uint8_t key[], size_t length) override;
45 
46  void key_expansion(const uint8_t key[],
47  size_t key_length,
48  const uint8_t salt[],
49  size_t salt_length);
50 
51  void generate_sbox(secure_vector<uint32_t>& box,
52  uint32_t& L, uint32_t& R,
53  const uint8_t salt[],
54  size_t salt_length,
55  size_t salt_off) const;
56 
57  secure_vector<uint32_t> m_S, m_P;
58  };
59 
60 }
61 
62 #endif
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
std::string name() const override
Definition: blowfish.h:41
Definition: alg_id.cpp:13
BlockCipher * clone() const override
Definition: blowfish.h:42
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:139