6253464532

Committed 19 Sep 2023 12:06AM UTC coverage: 91.748% (+0.02%) from 91.726%

Build # 6253464532

Build Type

push

github

Committed by

web-flow

Commit Message

Merge pull request #3693 from Rohde-Schwarz/refactor/alignment_buffer

Refactor: AlignmentBuffer<> helper for block-oriented Hashes

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79472 of 86620 relevant lines covered (91.75%)

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66.67

/src/lib/hash/skein/skein_512.h

/*
* The Skein-512 hash function
* (C) 2009,2014 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_SKEIN_512_H_
#define BOTAN_SKEIN_512_H_

#include <botan/hash.h>
#include <botan/internal/alignment_buffer.h>
#include <botan/internal/threefish_512.h>

#include <memory>
#include <string>

namespace Botan {

/**
* Skein-512, a SHA-3 candidate
*/
class Skein_512 final : public HashFunction {
   public:
      /**
      * @param output_bits the output size of Skein in bits
      * @param personalization is a string that will parameterize the
      * hash output
      */
      Skein_512(size_t output_bits = 512, std::string_view personalization = "");

      size_t hash_block_size() const override { return 64; }

      size_t output_length() const override { return m_output_bits / 8; }

      std::unique_ptr<HashFunction> new_object() const override;
      std::unique_ptr<HashFunction> copy_state() const override;
      std::string name() const override;
      void clear() override;

   private:
      enum type_code {
         SKEIN_KEY = 0,
         SKEIN_CONFIG = 4,
         SKEIN_PERSONALIZATION = 8,
         SKEIN_PUBLIC_KEY = 12,
         SKEIN_KEY_IDENTIFIER = 16,
         SKEIN_NONCE = 20,
         SKEIN_MSG = 48,
         SKEIN_OUTPUT = 63
      };

      void add_data(std::span<const uint8_t> input) override;
      void final_result(std::span<uint8_t> out) override;

      void ubi_512(const uint8_t msg[], size_t msg_len);

      void initial_block();
      void reset_tweak(type_code type, bool is_final);

      std::string m_personalization;
      size_t m_output_bits;

      std::unique_ptr<Threefish_512> m_threefish;
      secure_vector<uint64_t> m_T;
      AlignmentBuffer<uint8_t, 64, AlignmentBufferFinalBlock::must_be_deferred> m_buffer;
};

}  // namespace Botan

#endif

1	/*
2	* The Skein-512 hash function
3	* (C) 2009,2014 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#ifndef BOTAN_SKEIN_512_H_
9	#define BOTAN_SKEIN_512_H_
10
11	#include <botan/hash.h>
12	#include <botan/internal/alignment_buffer.h>
13	#include <botan/internal/threefish_512.h>
14
15	#include <memory>
16	#include <string>
17
18	namespace Botan {
19
20	/**
21	* Skein-512, a SHA-3 candidate
22	*/
23	class Skein_512 final : public HashFunction {	×
24	public:
25	/**
26	* @param output_bits the output size of Skein in bits
27	* @param personalization is a string that will parameterize the
28	* hash output
29	*/
30	Skein_512(size_t output_bits = 512, std::string_view personalization = "");
31
32	size_t hash_block_size() const override { return 64; }	2,074✔
33
34	size_t output_length() const override { return m_output_bits / 8; }	8,242✔
35
36	std::unique_ptr<HashFunction> new_object() const override;
37	std::unique_ptr<HashFunction> copy_state() const override;
38	std::string name() const override;
39	void clear() override;
40
41	private:
42	enum type_code {
43	SKEIN_KEY = 0,
44	SKEIN_CONFIG = 4,
45	SKEIN_PERSONALIZATION = 8,
46	SKEIN_PUBLIC_KEY = 12,
47	SKEIN_KEY_IDENTIFIER = 16,
48	SKEIN_NONCE = 20,
49	SKEIN_MSG = 48,
50	SKEIN_OUTPUT = 63
51	};
52
53	void add_data(std::span<const uint8_t> input) override;
54	void final_result(std::span<uint8_t> out) override;
55
56	void ubi_512(const uint8_t msg[], size_t msg_len);
57
58	void initial_block();
59	void reset_tweak(type_code type, bool is_final);
60
61	std::string m_personalization;
62	size_t m_output_bits;
63
64	std::unique_ptr<Threefish_512> m_threefish;
65	secure_vector<uint64_t> m_T;
66	AlignmentBuffer<uint8_t, 64, AlignmentBufferFinalBlock::must_be_deferred> m_buffer;
67	};
68
69	} // namespace Botan
70
71	#endif

randombit / botan / 6253464532

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