Botan 2.19.5 Crypto and TLS for C&

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
13 BOTAN_FUTURE_INTERNAL_HEADER(blowfish.h)
14
15namespace Botan {
16
17/**
18* Blowfish
19*/
20 class BOTAN_PUBLIC_API(2,0) Blowfish final : public Block_Cipher_Fixed_Params<8, 1, 56>
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
Botan::BlockCipher
Definition: block_cipher.h:22
Botan::BlockCipher::decrypt_n
virtual void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
Botan::BlockCipher::encrypt_n
virtual void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const =0
Botan::Block_Cipher_Fixed_Params
Definition: block_cipher.h:222
Botan::Blowfish
Definition: blowfish.h:21
Botan::Blowfish::clone
BlockCipher * clone() const override
Definition: blowfish.h:42
Botan::Blowfish::name
std::string name() const override
Definition: blowfish.h:41
Botan::SymmetricAlgorithm::clear
virtual void clear()=0
final
int(* final)(unsigned char *, CTX *)
Definition: commoncrypto_hash.cpp:29
BOTAN_PUBLIC_API
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
BOTAN_FUTURE_INTERNAL_HEADER
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:136
Botan
Definition: alg_id.cpp:13
Botan::secure_vector
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65