13215274653

Committed 08 Feb 2025 11:38AM UTC coverage: 91.655% (-0.009%) from 91.664%

Build # 13215274653

Build Type

Pull #4650

github

Committed by

web-flow

Commit Message

Merge 107f31833 into bc555cd3c

Pull Request Pull Request #4650: Reorganize code and reduce header dependencies

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87.5

/src/lib/block/gost_28147/gost_28147.h

/*
* GOST 28147-89
* (C) 1999-2009 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_GOST_28147_89_H_
#define BOTAN_GOST_28147_89_H_

#include <botan/block_cipher.h>
#include <botan/secmem.h>

namespace Botan {

/**
* The GOST 28147-89 block cipher uses a set of 4 bit Sboxes, however
* the standard does not actually define these Sboxes; they are
* considered a local configuration issue. Several different sets are
* used.
*/
class GOST_28147_89_Params final {
   public:
      /**
      * @param row the row
      * @param col the column
      * @return sbox entry at this row/column
      */
      uint8_t sbox_entry(size_t row, size_t col) const;

      /**
      * @return name of this parameter set
      */
      std::string param_name() const { return m_name; }

      /**
      * Return a representation used for building larger tables
      * For internal use
      */
      uint8_t sbox_pair(size_t row, size_t col) const;

      /**
      * Default GOST parameters are the ones given in GOST R 34.11 for
      * testing purposes; these sboxes are also used by Crypto++, and,
      * at least according to Wikipedia, the Central Bank of Russian
      * Federation
      * @param name of the parameter set
      */
      explicit GOST_28147_89_Params(std::string_view name = "R3411_94_TestParam");

   private:
      const uint8_t* m_sboxes;
      std::string m_name;
};

/**
* GOST 28147-89
*/
class GOST_28147_89 final : public Block_Cipher_Fixed_Params<8, 32> {
   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;

      void clear() override;

      std::string name() const override;

      std::unique_ptr<BlockCipher> new_object() const override {
         return std::make_unique<GOST_28147_89>(m_SBOX, m_name);
      }

      bool has_keying_material() const override;

      /**
      * @param params the sbox parameters to use
      */
      explicit GOST_28147_89(const GOST_28147_89_Params& params);

      explicit GOST_28147_89(std::string_view param_name) : GOST_28147_89(GOST_28147_89_Params(param_name)) {}

      explicit GOST_28147_89(const std::vector<uint32_t>& other_SBOX, std::string_view name) :
            m_SBOX(other_SBOX), m_EK(8), m_name(name) {}

   private:
      void key_schedule(std::span<const uint8_t> key) override;

      /*
      * The sbox is not secret, this is just a larger expansion of it
      * which we generate at runtime for faster execution
      */
      std::vector<uint32_t> m_SBOX;
      secure_vector<uint32_t> m_EK;
      std::string m_name;
};

}  // namespace Botan

#endif

1	/*
2	* GOST 28147-89
3	* (C) 1999-2009 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#ifndef BOTAN_GOST_28147_89_H_
9	#define BOTAN_GOST_28147_89_H_
10
11	#include <botan/block_cipher.h>
12	#include <botan/secmem.h>
13
14	namespace Botan {
15
16	/**
17	* The GOST 28147-89 block cipher uses a set of 4 bit Sboxes, however
18	* the standard does not actually define these Sboxes; they are
19	* considered a local configuration issue. Several different sets are
20	* used.
21	*/
22	class GOST_28147_89_Params final {	88✔
23	public:
24	/**
25	* @param row the row
26	* @param col the column
27	* @return sbox entry at this row/column
28	*/
29	uint8_t sbox_entry(size_t row, size_t col) const;
30
31	/**
32	* @return name of this parameter set
33	*/
34	std::string param_name() const { return m_name; }	176✔
35
36	/**
37	* Return a representation used for building larger tables
38	* For internal use
39	*/
40	uint8_t sbox_pair(size_t row, size_t col) const;
41
42	/**
43	* Default GOST parameters are the ones given in GOST R 34.11 for
44	* testing purposes; these sboxes are also used by Crypto++, and,
45	* at least according to Wikipedia, the Central Bank of Russian
46	* Federation
47	* @param name of the parameter set
48	*/
49	explicit GOST_28147_89_Params(std::string_view name = "R3411_94_TestParam");
50
51	private:
52	const uint8_t* m_sboxes;
53	std::string m_name;
54	};
55
56	/**
57	* GOST 28147-89
58	*/
59	class GOST_28147_89 final : public Block_Cipher_Fixed_Params<8, 32> {	×
60	public:
61	void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
62	void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
63
64	void clear() override;
65
66	std::string name() const override;
67
68	std::unique_ptr<BlockCipher> new_object() const override {	28✔
69	return std::make_unique<GOST_28147_89>(m_SBOX, m_name);	28✔
70	}
71
72	bool has_keying_material() const override;
73
74	/**
75	* @param params the sbox parameters to use
76	*/
77	explicit GOST_28147_89(const GOST_28147_89_Params& params);
78
79	explicit GOST_28147_89(std::string_view param_name) : GOST_28147_89(GOST_28147_89_Params(param_name)) {}	112✔
80
81	explicit GOST_28147_89(const std::vector<uint32_t>& other_SBOX, std::string_view name) :	28✔
82	m_SBOX(other_SBOX), m_EK(8), m_name(name) {}	56✔
83
84	private:
85	void key_schedule(std::span<const uint8_t> key) override;
86
87	/*
88	* The sbox is not secret, this is just a larger expansion of it
89	* which we generate at runtime for faster execution
90	*/
91	std::vector<uint32_t> m_SBOX;
92	secure_vector<uint32_t> m_EK;
93	std::string m_name;
94	};
95
96	} // namespace Botan
97
98	#endif

randombit / botan / 13215274653

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