17696043001

Committed 13 Sep 2025 11:42AM UTC coverage: 90.67% (+0.002%) from 90.668%

Build # 17696043001

Build Type

Pull #5097

github

Committed by

web-flow

Commit Message

Merge 67e0edd81 into 0d4cd13de

Pull Request Pull Request #5097: Refactor: Clarify Padding Specification in Keccak-based Functions

Run Details

100385 of 110715 relevant lines covered (90.67%)

12404591.65 hits per line

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94.74

/src/lib/hash/shake/shake.cpp

/*
* SHAKE-128/256 as a hash
* (C) 2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/internal/shake.h>

#include <botan/exceptn.h>
#include <botan/internal/fmt.h>

namespace Botan {

SHAKE_128::SHAKE_128(size_t output_bits) :
      m_keccak({.capacity_bits = 256, .padding = KeccakPadding::shake()}), m_output_bits(output_bits) {
   if(output_bits % 8 != 0) {
      throw Invalid_Argument(fmt("SHAKE_128: Invalid output length {}", output_bits));
   }
}

std::string SHAKE_128::name() const {
   return fmt("SHAKE-128({})", m_output_bits);
}

std::unique_ptr<HashFunction> SHAKE_128::new_object() const {
   return std::make_unique<SHAKE_128>(m_output_bits);
}

std::unique_ptr<HashFunction> SHAKE_128::copy_state() const {
   return std::make_unique<SHAKE_128>(*this);
}

void SHAKE_128::add_data(std::span<const uint8_t> input) {
   m_keccak.absorb(input);
}

void SHAKE_128::final_result(std::span<uint8_t> output) {
   m_keccak.finish();
   m_keccak.squeeze(output);
   clear();
}

SHAKE_256::SHAKE_256(size_t output_bits) :
      m_keccak({.capacity_bits = 512, .padding = KeccakPadding::shake()}), m_output_bits(output_bits) {
   if(output_bits % 8 != 0) {
      throw Invalid_Argument(fmt("SHAKE_256: Invalid output length {}", output_bits));
   }
}

std::string SHAKE_256::name() const {
   return fmt("SHAKE-256({})", m_output_bits);
}

std::unique_ptr<HashFunction> SHAKE_256::new_object() const {
   return std::make_unique<SHAKE_256>(m_output_bits);
}

std::unique_ptr<HashFunction> SHAKE_256::copy_state() const {
   return std::make_unique<SHAKE_256>(*this);
}

void SHAKE_256::add_data(std::span<const uint8_t> input) {
   m_keccak.absorb(input);
}

void SHAKE_256::final_result(std::span<uint8_t> output) {
   m_keccak.finish();
   m_keccak.squeeze(output);
   clear();
}

}  // namespace Botan

1	/*
2	* SHAKE-128/256 as a hash
3	* (C) 2016 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#include <botan/internal/shake.h>
9
10	#include <botan/exceptn.h>
11	#include <botan/internal/fmt.h>
12
13	namespace Botan {
14
15	SHAKE_128::SHAKE_128(size_t output_bits) :	2,135✔
16	m_keccak({.capacity_bits = 256, .padding = KeccakPadding::shake()}), m_output_bits(output_bits) {	2,135✔
17	if(output_bits % 8 != 0) {	2,135✔
18	throw Invalid_Argument(fmt("SHAKE_128: Invalid output length {}", output_bits));	×
19	}
20	}	2,135✔
21
22	std::string SHAKE_128::name() const {	726✔
23	return fmt("SHAKE-128({})", m_output_bits);	726✔
24	}
25
26	std::unique_ptr<HashFunction> SHAKE_128::new_object() const {	1,158✔
27	return std::make_unique<SHAKE_128>(m_output_bits);	1,158✔
28	}
29
30	std::unique_ptr<HashFunction> SHAKE_128::copy_state() const {	207✔
31	return std::make_unique<SHAKE_128>(*this);	207✔
32	}
33
34	void SHAKE_128::add_data(std::span<const uint8_t> input) {	84,656,117✔
35	m_keccak.absorb(input);	84,656,117✔
36	}	84,656,117✔
37
38	void SHAKE_128::final_result(std::span<uint8_t> output) {	21,176,118✔
39	m_keccak.finish();	21,176,118✔
40	m_keccak.squeeze(output);	21,176,118✔
41	clear();	21,176,118✔
42	}	21,176,118✔
43
44	SHAKE_256::SHAKE_256(size_t output_bits) :	6,082✔
45	m_keccak({.capacity_bits = 512, .padding = KeccakPadding::shake()}), m_output_bits(output_bits) {	6,082✔
46	if(output_bits % 8 != 0) {	6,082✔
47	throw Invalid_Argument(fmt("SHAKE_256: Invalid output length {}", output_bits));	×
48	}
49	}	6,082✔
50
51	std::string SHAKE_256::name() const {	12✔
52	return fmt("SHAKE-256({})", m_output_bits);	12✔
53	}
54
55	std::unique_ptr<HashFunction> SHAKE_256::new_object() const {	2,332✔
56	return std::make_unique<SHAKE_256>(m_output_bits);	2,332✔
57	}
58
59	std::unique_ptr<HashFunction> SHAKE_256::copy_state() const {	3✔
60	return std::make_unique<SHAKE_256>(*this);	3✔
61	}
62
63	void SHAKE_256::add_data(std::span<const uint8_t> input) {	494,409,197✔
64	m_keccak.absorb(input);	494,409,197✔
65	}	494,409,197✔
66
67	void SHAKE_256::final_result(std::span<uint8_t> output) {	140,965,263✔
68	m_keccak.finish();	140,965,263✔
69	m_keccak.squeeze(output);	140,965,263✔
70	clear();	140,965,263✔
71	}	140,965,263✔
72
73	} // namespace Botan

randombit / botan / 17696043001

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