18905193317

Committed 29 Oct 2025 10:44AM UTC coverage: 90.668% (+0.003%) from 90.665%

Build # 18905193317

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Commit Message

Merge pull request #5131 from randombit/jack/mp-view

Add FFI view functions for mp type

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95.7

/src/lib/ffi/ffi_mp.cpp

/*
* (C) 2015,2017 Jack Lloyd
* (C) 2017 Ribose Inc
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/ffi.h>

#include <botan/numthry.h>
#include <botan/internal/barrett.h>
#include <botan/internal/divide.h>
#include <botan/internal/ffi_mp.h>
#include <botan/internal/ffi_rng.h>
#include <botan/internal/ffi_util.h>
#include <botan/internal/mem_utils.h>
#include <botan/internal/mod_inv.h>

extern "C" {

using namespace Botan_FFI;

int botan_mp_init(botan_mp_t* mp_out) {
   return ffi_guard_thunk(__func__, [=]() -> int {
      if(mp_out == nullptr) {
         return BOTAN_FFI_ERROR_NULL_POINTER;
      }

      auto mp = std::make_unique<Botan::BigInt>();
      return ffi_new_object(mp_out, std::move(mp));
   });
}

int botan_mp_clear(botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](auto& bn) { bn.clear(); });
}

int botan_mp_set_from_int(botan_mp_t mp, int initial_value) {
   return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn = Botan::BigInt::from_s32(initial_value); });
}

int botan_mp_set_from_str(botan_mp_t mp, const char* str) {
   return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn = Botan::BigInt(str); });
}

int botan_mp_set_from_radix_str(botan_mp_t mp, const char* str, size_t radix) {
   return BOTAN_FFI_VISIT(mp, [=](auto& bn) {
      Botan::BigInt::Base base;
      if(radix == 10) {
         base = Botan::BigInt::Decimal;
      } else if(radix == 16) {
         base = Botan::BigInt::Hexadecimal;
      } else {
         return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
      }

      bn = Botan::BigInt::decode(Botan::cstr_as_span_of_bytes(str), base);
      return BOTAN_FFI_SUCCESS;
   });
}

// NOLINTBEGIN(misc-misplaced-const)

int botan_mp_set_from_mp(botan_mp_t dest, const botan_mp_t source) {
   return BOTAN_FFI_VISIT(dest, [=](auto& bn) { bn = safe_get(source); });
}

int botan_mp_is_negative(const botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](const auto& bn) { return bn.is_negative() ? 1 : 0; });
}

int botan_mp_is_positive(const botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](const auto& bn) { return bn.is_positive() ? 1 : 0; });
}

int botan_mp_flip_sign(botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](auto& bn) { bn.flip_sign(); });
}

int botan_mp_from_bin(botan_mp_t mp, const uint8_t bin[], size_t bin_len) {
   return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn._assign_from_bytes({bin, bin_len}); });
}

int botan_mp_to_hex(const botan_mp_t mp, char* out) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) {
      const std::string hex = bn.to_hex_string();

      // Check that we are about to write no more than the documented upper bound
      const size_t upper_bound = 2 * bn.bytes() + 5;
      BOTAN_ASSERT_NOMSG(hex.size() + 1 <= upper_bound);
      std::memcpy(out, hex.c_str(), 1 + hex.size());
   });
}

int botan_mp_view_hex(const botan_mp_t mp, botan_view_ctx ctx, botan_view_str_fn view) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {
      const std::string hex = bn.to_hex_string();
      return invoke_view_callback(view, ctx, hex);
   });
}

int botan_mp_to_str(const botan_mp_t mp, uint8_t radix, char* out, size_t* out_len) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {
      if(radix == 0 || radix == 10) {
         return write_str_output(out, out_len, bn.to_dec_string());
      } else if(radix == 16) {
         return write_str_output(out, out_len, bn.to_hex_string());
      } else {
         return BOTAN_FFI_ERROR_BAD_PARAMETER;
      }
   });
}

int botan_mp_view_str(const botan_mp_t mp, uint8_t radix, botan_view_ctx ctx, botan_view_str_fn view) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {
      if(radix == 10) {
         return invoke_view_callback(view, ctx, bn.to_dec_string());
      } else if(radix == 16) {
         return invoke_view_callback(view, ctx, bn.to_hex_string());
      } else {
         return BOTAN_FFI_ERROR_BAD_PARAMETER;
      }
   });
}

int botan_mp_to_bin(const botan_mp_t mp, uint8_t vec[]) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) { bn.serialize_to(std::span{vec, bn.bytes()}); });
}

int botan_mp_view_bin(const botan_mp_t mp, botan_view_ctx ctx, botan_view_bin_fn view) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) {
      const auto bytes = bn.serialize();
      return invoke_view_callback(view, ctx, bytes);
   });
}

int botan_mp_to_uint32(const botan_mp_t mp, uint32_t* val) {
   if(val == nullptr) {
      return BOTAN_FFI_ERROR_NULL_POINTER;
   }
   return BOTAN_FFI_VISIT(mp, [=](const auto& bn) { *val = bn.to_u32bit(); });
}

int botan_mp_destroy(botan_mp_t mp) {
   return BOTAN_FFI_CHECKED_DELETE(mp);
}

int botan_mp_add(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {
   return BOTAN_FFI_VISIT(result, [=](auto& res) {
      if(result == x) {
         res += safe_get(y);
      } else {
         res = safe_get(x) + safe_get(y);
      }
   });
}

int botan_mp_sub(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {
   return BOTAN_FFI_VISIT(result, [=](auto& res) {
      if(result == x) {
         res -= safe_get(y);
      } else {
         res = safe_get(x) - safe_get(y);
      }
   });
}

int botan_mp_add_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) {
   return BOTAN_FFI_VISIT(result, [=](auto& res) {
      if(result == x) {
         res += static_cast<Botan::word>(y);
      } else {
         res = safe_get(x) + static_cast<Botan::word>(y);
      }
   });
}

int botan_mp_sub_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) {
   return BOTAN_FFI_VISIT(result, [=](auto& res) {
      if(result == x) {
         res -= static_cast<Botan::word>(y);
      } else {
         res = safe_get(x) - static_cast<Botan::word>(y);
      }
   });
}

int botan_mp_mul(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {
   return BOTAN_FFI_VISIT(result, [=](auto& res) {
      if(result == x) {
         res *= safe_get(y);
      } else {
         res = safe_get(x) * safe_get(y);
      }
   });
}

int botan_mp_div(botan_mp_t quotient, botan_mp_t remainder, const botan_mp_t x, const botan_mp_t y) {
   return BOTAN_FFI_VISIT(quotient, [=](auto& q) {
      Botan::BigInt r;
      Botan::vartime_divide(safe_get(x), safe_get(y), q, r);
      safe_get(remainder) = r;
   });
}

int botan_mp_equal(const botan_mp_t x_w, const botan_mp_t y_w) {
   return BOTAN_FFI_VISIT(x_w, [=](const auto& x) -> int { return x == safe_get(y_w); });
}

int botan_mp_is_zero(const botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_zero(); });
}

int botan_mp_is_odd(const botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_odd(); });
}

int botan_mp_is_even(const botan_mp_t mp) {
   return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_even(); });
}

int botan_mp_cmp(int* result, const botan_mp_t x_w, const botan_mp_t y_w) {
   return BOTAN_FFI_VISIT(x_w, [=](auto& x) { *result = x.cmp(safe_get(y_w)); });
}

int botan_mp_swap(botan_mp_t x_w, botan_mp_t y_w) {
   return BOTAN_FFI_VISIT(x_w, [=](auto& x) { x.swap(safe_get(y_w)); });
}

// Return (base^exponent) % modulus
int botan_mp_powmod(botan_mp_t out, const botan_mp_t base, const botan_mp_t exponent, const botan_mp_t modulus) {
   return BOTAN_FFI_VISIT(
      out, [=](auto& o) { o = Botan::power_mod(safe_get(base), safe_get(exponent), safe_get(modulus)); });
}

int botan_mp_lshift(botan_mp_t out, const botan_mp_t in, size_t shift) {
   return BOTAN_FFI_VISIT(out, [=](auto& o) { o = safe_get(in) << shift; });
}

int botan_mp_rshift(botan_mp_t out, const botan_mp_t in, size_t shift) {
   return BOTAN_FFI_VISIT(out, [=](auto& o) { o = safe_get(in) >> shift; });
}

int botan_mp_mod_inverse(botan_mp_t out, const botan_mp_t in, const botan_mp_t modulus) {
   return BOTAN_FFI_VISIT(out, [=](auto& o) {
      o = Botan::inverse_mod_general(safe_get(in), safe_get(modulus)).value_or(Botan::BigInt::zero());
   });
}

int botan_mp_mod_mul(botan_mp_t out, const botan_mp_t x, const botan_mp_t y, const botan_mp_t modulus) {
   return BOTAN_FFI_VISIT(out, [=](auto& o) {
      auto reducer = Botan::Barrett_Reduction::for_secret_modulus(safe_get(modulus));
      o = reducer.multiply(safe_get(x), safe_get(y));
   });
}

int botan_mp_rand_bits(botan_mp_t rand_out, botan_rng_t rng, size_t bits) {
   return BOTAN_FFI_VISIT(rng, [=](auto& r) { safe_get(rand_out).randomize(r, bits); });
}

int botan_mp_rand_range(botan_mp_t rand_out, botan_rng_t rng, const botan_mp_t lower, const botan_mp_t upper) {
   return BOTAN_FFI_VISIT(
      rng, [=](auto& r) { safe_get(rand_out) = Botan::BigInt::random_integer(r, safe_get(lower), safe_get(upper)); });
}

int botan_mp_gcd(botan_mp_t out, const botan_mp_t x, const botan_mp_t y) {
   return BOTAN_FFI_VISIT(out, [=](auto& o) { o = Botan::gcd(safe_get(x), safe_get(y)); });
}

int botan_mp_is_prime(const botan_mp_t mp, botan_rng_t rng, size_t test_prob) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& n) { return (Botan::is_prime(n, safe_get(rng), test_prob)) ? 1 : 0; });
}

int botan_mp_get_bit(const botan_mp_t mp, size_t bit) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& n) -> int { return n.get_bit(bit); });
}

int botan_mp_set_bit(botan_mp_t mp, size_t bit) {
   return BOTAN_FFI_VISIT(mp, [=](auto& n) { n.set_bit(bit); });
}

int botan_mp_clear_bit(botan_mp_t mp, size_t bit) {
   return BOTAN_FFI_VISIT(mp, [=](auto& n) { n.clear_bit(bit); });
}

int botan_mp_num_bits(const botan_mp_t mp, size_t* bits) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& n) { *bits = n.bits(); });
}

int botan_mp_num_bytes(const botan_mp_t mp, size_t* bytes) {
   return BOTAN_FFI_VISIT(mp, [=](const auto& n) { *bytes = n.bytes(); });
}

// NOLINTEND(misc-misplaced-const)
}

1	/*
2	* (C) 2015,2017 Jack Lloyd
3	* (C) 2017 Ribose Inc
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#include <botan/ffi.h>
9
10	#include <botan/numthry.h>
11	#include <botan/internal/barrett.h>
12	#include <botan/internal/divide.h>
13	#include <botan/internal/ffi_mp.h>
14	#include <botan/internal/ffi_rng.h>
15	#include <botan/internal/ffi_util.h>
16	#include <botan/internal/mem_utils.h>
17	#include <botan/internal/mod_inv.h>
18
19	extern "C" {
20
21	using namespace Botan_FFI;
22
23	int botan_mp_init(botan_mp_t* mp_out) {	152✔
24	return ffi_guard_thunk(__func__, [=]() -> int {	152✔
25	if(mp_out == nullptr) {	152✔
26	return BOTAN_FFI_ERROR_NULL_POINTER;
27	}
28
29	auto mp = std::make_unique<Botan::BigInt>();	152✔
30	return ffi_new_object(mp_out, std::move(mp));	152✔
31	});	152✔
32	}
33
34	int botan_mp_clear(botan_mp_t mp) {	×
35	return BOTAN_FFI_VISIT(mp, [](auto& bn) { bn.clear(); });	×
36	}
37
38	int botan_mp_set_from_int(botan_mp_t mp, int initial_value) {	2✔
39	return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn = Botan::BigInt::from_s32(initial_value); });	4✔
40	}
41
42	int botan_mp_set_from_str(botan_mp_t mp, const char* str) {	35✔
43	return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn = Botan::BigInt(str); });	70✔
44	}
45
46	int botan_mp_set_from_radix_str(botan_mp_t mp, const char* str, size_t radix) {	10✔
47	return BOTAN_FFI_VISIT(mp, [=](auto& bn) {	20✔
48	Botan::BigInt::Base base;
49	if(radix == 10) {
50	base = Botan::BigInt::Decimal;
51	} else if(radix == 16) {
52	base = Botan::BigInt::Hexadecimal;
53	} else {
54	return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
55	}
56
57	bn = Botan::BigInt::decode(Botan::cstr_as_span_of_bytes(str), base);
58	return BOTAN_FFI_SUCCESS;
59	});
60	}
61
62	// NOLINTBEGIN(misc-misplaced-const)
63
64	int botan_mp_set_from_mp(botan_mp_t dest, const botan_mp_t source) {	4✔
65	return BOTAN_FFI_VISIT(dest, [=](auto& bn) { bn = safe_get(source); });	8✔
66	}
67
68	int botan_mp_is_negative(const botan_mp_t mp) {	10✔
69	return BOTAN_FFI_VISIT(mp, [](const auto& bn) { return bn.is_negative() ? 1 : 0; });	20✔
70	}
71
72	int botan_mp_is_positive(const botan_mp_t mp) {	6✔
73	return BOTAN_FFI_VISIT(mp, [](const auto& bn) { return bn.is_positive() ? 1 : 0; });	12✔
74	}
75
76	int botan_mp_flip_sign(botan_mp_t mp) {	5✔
77	return BOTAN_FFI_VISIT(mp, [](auto& bn) { bn.flip_sign(); });	15✔
78	}
79
80	int botan_mp_from_bin(botan_mp_t mp, const uint8_t bin[], size_t bin_len) {	1✔
81	return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn._assign_from_bytes({bin, bin_len}); });	2✔
82	}
83
84	int botan_mp_to_hex(const botan_mp_t mp, char* out) {	3✔
85	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) {	6✔
86	const std::string hex = bn.to_hex_string();
87
88	// Check that we are about to write no more than the documented upper bound
89	const size_t upper_bound = 2 * bn.bytes() + 5;
90	BOTAN_ASSERT_NOMSG(hex.size() + 1 <= upper_bound);
91	std::memcpy(out, hex.c_str(), 1 + hex.size());
92	});
93	}
94
95	int botan_mp_view_hex(const botan_mp_t mp, botan_view_ctx ctx, botan_view_str_fn view) {	36✔
96	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {	108✔
97	const std::string hex = bn.to_hex_string();
98	return invoke_view_callback(view, ctx, hex);
99	});
100	}
101
102	int botan_mp_to_str(const botan_mp_t mp, uint8_t radix, char* out, size_t* out_len) {	14✔
103	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {	28✔
104	if(radix == 0 \|\| radix == 10) {
105	return write_str_output(out, out_len, bn.to_dec_string());
106	} else if(radix == 16) {
107	return write_str_output(out, out_len, bn.to_hex_string());
108	} else {
109	return BOTAN_FFI_ERROR_BAD_PARAMETER;
110	}
111	});
112	}
113
114	int botan_mp_view_str(const botan_mp_t mp, uint8_t radix, botan_view_ctx ctx, botan_view_str_fn view) {	3✔
115	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {	9✔
116	if(radix == 10) {
117	return invoke_view_callback(view, ctx, bn.to_dec_string());
118	} else if(radix == 16) {
119	return invoke_view_callback(view, ctx, bn.to_hex_string());
120	} else {
121	return BOTAN_FFI_ERROR_BAD_PARAMETER;
122	}
123	});
124	}
125
126	int botan_mp_to_bin(const botan_mp_t mp, uint8_t vec[]) {	3✔
127	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) { bn.serialize_to(std::span{vec, bn.bytes()}); });	6✔
128	}
129
130	int botan_mp_view_bin(const botan_mp_t mp, botan_view_ctx ctx, botan_view_bin_fn view) {	1✔
131	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) {	5✔
132	const auto bytes = bn.serialize();
133	return invoke_view_callback(view, ctx, bytes);
134	});
135	}
136
137	int botan_mp_to_uint32(const botan_mp_t mp, uint32_t* val) {	5✔
138	if(val == nullptr) {	5✔
139	return BOTAN_FFI_ERROR_NULL_POINTER;
140	}
141	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) { *val = bn.to_u32bit(); });	10✔
142	}
143
144	int botan_mp_destroy(botan_mp_t mp) {	172✔
145	return BOTAN_FFI_CHECKED_DELETE(mp);	172✔
146	}
147
148	int botan_mp_add(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {	5✔
149	return BOTAN_FFI_VISIT(result, [=](auto& res) {	10✔
150	if(result == x) {
151	res += safe_get(y);
152	} else {
153	res = safe_get(x) + safe_get(y);
154	}
155	});
156	}
157
158	int botan_mp_sub(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {	1✔
159	return BOTAN_FFI_VISIT(result, [=](auto& res) {	2✔
160	if(result == x) {
161	res -= safe_get(y);
162	} else {
163	res = safe_get(x) - safe_get(y);
164	}
165	});
166	}
167
168	int botan_mp_add_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) {	2✔
169	return BOTAN_FFI_VISIT(result, [=](auto& res) {	4✔
170	if(result == x) {
171	res += static_cast<Botan::word>(y);
172	} else {
173	res = safe_get(x) + static_cast<Botan::word>(y);
174	}
175	});
176	}
177
178	int botan_mp_sub_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) {	1✔
179	return BOTAN_FFI_VISIT(result, [=](auto& res) {	2✔
180	if(result == x) {
181	res -= static_cast<Botan::word>(y);
182	} else {
183	res = safe_get(x) - static_cast<Botan::word>(y);
184	}
185	});
186	}
187
188	int botan_mp_mul(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {	6✔
189	return BOTAN_FFI_VISIT(result, [=](auto& res) {	12✔
190	if(result == x) {
191	res *= safe_get(y);
192	} else {
193	res = safe_get(x) * safe_get(y);
194	}
195	});
196	}
197
198	int botan_mp_div(botan_mp_t quotient, botan_mp_t remainder, const botan_mp_t x, const botan_mp_t y) {	2✔
199	return BOTAN_FFI_VISIT(quotient, [=](auto& q) {	4✔
200	Botan::BigInt r;
201	Botan::vartime_divide(safe_get(x), safe_get(y), q, r);
202	safe_get(remainder) = r;
203	});
204	}
205
206	int botan_mp_equal(const botan_mp_t x_w, const botan_mp_t y_w) {	23✔
207	return BOTAN_FFI_VISIT(x_w, [=](const auto& x) -> int { return x == safe_get(y_w); });	46✔
208	}
209
210	int botan_mp_is_zero(const botan_mp_t mp) {	3✔
211	return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_zero(); });	6✔
212	}
213
214	int botan_mp_is_odd(const botan_mp_t mp) {	2✔
215	return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_odd(); });	5✔
216	}
217
218	int botan_mp_is_even(const botan_mp_t mp) {	2✔
219	return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_even(); });	5✔
220	}
221
222	int botan_mp_cmp(int* result, const botan_mp_t x_w, const botan_mp_t y_w) {	44✔
223	return BOTAN_FFI_VISIT(x_w, [=](auto& x) { *result = x.cmp(safe_get(y_w)); });	88✔
224	}
225
226	int botan_mp_swap(botan_mp_t x_w, botan_mp_t y_w) {	×
227	return BOTAN_FFI_VISIT(x_w, [=](auto& x) { x.swap(safe_get(y_w)); });	×
228	}
229
230	// Return (base^exponent) % modulus
231	int botan_mp_powmod(botan_mp_t out, const botan_mp_t base, const botan_mp_t exponent, const botan_mp_t modulus) {	2✔
232	return BOTAN_FFI_VISIT(	4✔
233	out, [=](auto& o) { o = Botan::power_mod(safe_get(base), safe_get(exponent), safe_get(modulus)); });
234	}
235
236	int botan_mp_lshift(botan_mp_t out, const botan_mp_t in, size_t shift) {	3✔
237	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = safe_get(in) << shift; });	6✔
238	}
239
240	int botan_mp_rshift(botan_mp_t out, const botan_mp_t in, size_t shift) {	4✔
241	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = safe_get(in) >> shift; });	8✔
242	}
243
244	int botan_mp_mod_inverse(botan_mp_t out, const botan_mp_t in, const botan_mp_t modulus) {	2✔
245	return BOTAN_FFI_VISIT(out, [=](auto& o) {	4✔
246	o = Botan::inverse_mod_general(safe_get(in), safe_get(modulus)).value_or(Botan::BigInt::zero());
247	});
248	}
249
250	int botan_mp_mod_mul(botan_mp_t out, const botan_mp_t x, const botan_mp_t y, const botan_mp_t modulus) {	2✔
251	return BOTAN_FFI_VISIT(out, [=](auto& o) {	6✔
252	auto reducer = Botan::Barrett_Reduction::for_secret_modulus(safe_get(modulus));
253	o = reducer.multiply(safe_get(x), safe_get(y));
254	});
255	}
256
257	int botan_mp_rand_bits(botan_mp_t rand_out, botan_rng_t rng, size_t bits) {	2✔
258	return BOTAN_FFI_VISIT(rng, [=](auto& r) { safe_get(rand_out).randomize(r, bits); });	4✔
259	}
260
261	int botan_mp_rand_range(botan_mp_t rand_out, botan_rng_t rng, const botan_mp_t lower, const botan_mp_t upper) {	10✔
262	return BOTAN_FFI_VISIT(	30✔
263	rng, [=](auto& r) { safe_get(rand_out) = Botan::BigInt::random_integer(r, safe_get(lower), safe_get(upper)); });
264	}
265
266	int botan_mp_gcd(botan_mp_t out, const botan_mp_t x, const botan_mp_t y) {	4✔
267	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = Botan::gcd(safe_get(x), safe_get(y)); });	8✔
268	}
269
270	int botan_mp_is_prime(const botan_mp_t mp, botan_rng_t rng, size_t test_prob) {	5✔
271	return BOTAN_FFI_VISIT(mp, [=](const auto& n) { return (Botan::is_prime(n, safe_get(rng), test_prob)) ? 1 : 0; });	10✔
272	}
273
274	int botan_mp_get_bit(const botan_mp_t mp, size_t bit) {	6✔
275	return BOTAN_FFI_VISIT(mp, [=](const auto& n) -> int { return n.get_bit(bit); });	12✔
276	}
277
278	int botan_mp_set_bit(botan_mp_t mp, size_t bit) {	2✔
279	return BOTAN_FFI_VISIT(mp, [=](auto& n) { n.set_bit(bit); });	4✔
280	}
281
282	int botan_mp_clear_bit(botan_mp_t mp, size_t bit) {	2✔
283	return BOTAN_FFI_VISIT(mp, [=](auto& n) { n.clear_bit(bit); });	4✔
284	}
285
286	int botan_mp_num_bits(const botan_mp_t mp, size_t* bits) {	7✔
287	return BOTAN_FFI_VISIT(mp, [=](const auto& n) { *bits = n.bits(); });	14✔
288	}
289
290	int botan_mp_num_bytes(const botan_mp_t mp, size_t* bytes) {	10✔
291	return BOTAN_FFI_VISIT(mp, [=](const auto& n) { *bytes = n.bytes(); });	20✔
292	}
293
294	// NOLINTEND(misc-misplaced-const)
295	}

randombit / botan / 18905193317

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