5123321399

Committed 30 May 2023 04:06PM UTC coverage: 92.213% (+0.004%) from 92.209%

Build # 5123321399

Build Type

Pull #3558

github

Committed by

web-flow

Commit Message

Merge dd72f7389 into 057bcbc35

Pull Request Pull Request #3558: Add braces around all if/else statements

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95.4

/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/reducer.h>
#include <botan/internal/divide.h>
#include <botan/internal/ffi_mp.h>
#include <botan/internal/ffi_rng.h>
#include <botan/internal/ffi_util.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>();
      *mp_out = new botan_mp_struct(std::move(mp));
      return BOTAN_FFI_SUCCESS;
   });
}

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;

      const uint8_t* bytes = Botan::cast_char_ptr_to_uint8(str);
      const size_t len = strlen(str);

      bn = Botan::BigInt(bytes, len, base);
      return BOTAN_FFI_SUCCESS;
   });
}

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.binary_decode(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();
      std::memcpy(out, hex.c_str(), 1 + hex.size());
   });
}

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

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(safe_get(in), safe_get(modulus)); });
}

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) {
      Botan::Modular_Reducer reducer(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(); });
}
}

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/reducer.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
17	extern "C" {
18
19	using namespace Botan_FFI;
20
21	int botan_mp_init(botan_mp_t* mp_out) {	133✔
22	return ffi_guard_thunk(__func__, [=]() -> int {	133✔
23	if(mp_out == nullptr) {	133✔
24	return BOTAN_FFI_ERROR_NULL_POINTER;
25	}
26
27	auto mp = std::make_unique<Botan::BigInt>();	133✔
28	*mp_out = new botan_mp_struct(std::move(mp));	133✔
29	return BOTAN_FFI_SUCCESS;	133✔
30	});	266✔
31	}
32
33	int botan_mp_clear(botan_mp_t mp) {	×
34	return BOTAN_FFI_VISIT(mp, [](auto& bn) { bn.clear(); });	×
35	}
36
37	int botan_mp_set_from_int(botan_mp_t mp, int initial_value) {	2✔
38	return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn = Botan::BigInt::from_s32(initial_value); });	4✔
39	}
40
41	int botan_mp_set_from_str(botan_mp_t mp, const char* str) {	29✔
42	return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn = Botan::BigInt(str); });	58✔
43	}
44
45	int botan_mp_set_from_radix_str(botan_mp_t mp, const char* str, size_t radix) {	4✔
46	return BOTAN_FFI_VISIT(mp, [=](auto& bn) {	10✔
47	Botan::BigInt::Base base;
48	if(radix == 10)
49	base = Botan::BigInt::Decimal;
50	else if(radix == 16)
51	base = Botan::BigInt::Hexadecimal;
52	else
53	return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
54
55	const uint8_t* bytes = Botan::cast_char_ptr_to_uint8(str);
56	const size_t len = strlen(str);
57
58	bn = Botan::BigInt(bytes, len, base);
59	return BOTAN_FFI_SUCCESS;
60	});
61	}
62
63	int botan_mp_set_from_mp(botan_mp_t dest, const botan_mp_t source) {	4✔
64	return BOTAN_FFI_VISIT(dest, [=](auto& bn) { bn = safe_get(source); });	8✔
65	}
66
67	int botan_mp_is_negative(const botan_mp_t mp) {	10✔
68	return BOTAN_FFI_VISIT(mp, [](const auto& bn) { return bn.is_negative() ? 1 : 0; });	20✔
69	}
70
71	int botan_mp_is_positive(const botan_mp_t mp) {	6✔
72	return BOTAN_FFI_VISIT(mp, [](const auto& bn) { return bn.is_positive() ? 1 : 0; });	12✔
73	}
74
75	int botan_mp_flip_sign(botan_mp_t mp) {	5✔
76	return BOTAN_FFI_VISIT(mp, [](auto& bn) { bn.flip_sign(); });	10✔
77	}
78
79	int botan_mp_from_bin(botan_mp_t mp, const uint8_t bin[], size_t bin_len) {	1✔
80	return BOTAN_FFI_VISIT(mp, [=](auto& bn) { bn.binary_decode(bin, bin_len); });	2✔
81	}
82
83	int botan_mp_to_hex(const botan_mp_t mp, char* out) {	38✔
84	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) {	76✔
85	const std::string hex = bn.to_hex_string();
86	std::memcpy(out, hex.c_str(), 1 + hex.size());
87	});
88	}
89
90	int botan_mp_to_str(const botan_mp_t mp, uint8_t digit_base, char* out, size_t* out_len) {	14✔
91	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) -> int {	33✔
92	if(digit_base == 0 \|\| digit_base == 10)
93	return write_str_output(out, out_len, bn.to_dec_string());
94	else if(digit_base == 16)
95	return write_str_output(out, out_len, bn.to_hex_string());
96	else
97	return BOTAN_FFI_ERROR_BAD_PARAMETER;
98	});
99	}
100
101	int botan_mp_to_bin(const botan_mp_t mp, uint8_t vec[]) {	3✔
102	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) { bn.binary_encode(vec); });	6✔
103	}
104
105	int botan_mp_to_uint32(const botan_mp_t mp, uint32_t* val) {	5✔
106	if(val == nullptr) {	5✔
107	return BOTAN_FFI_ERROR_NULL_POINTER;
108	}
109	return BOTAN_FFI_VISIT(mp, [=](const auto& bn) { *val = bn.to_u32bit(); });	10✔
110	}
111
112	int botan_mp_destroy(botan_mp_t mp) { return BOTAN_FFI_CHECKED_DELETE(mp); }	133✔
113
114	int botan_mp_add(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {	5✔
115	return BOTAN_FFI_VISIT(result, [=](auto& res) {	10✔
116	if(result == x)
117	res += safe_get(y);
118	else
119	res = safe_get(x) + safe_get(y);
120	});
121	}
122
123	int botan_mp_sub(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {	1✔
124	return BOTAN_FFI_VISIT(result, [=](auto& res) {	3✔
125	if(result == x)
126	res -= safe_get(y);
127	else
128	res = safe_get(x) - safe_get(y);
129	});
130	}
131
132	int botan_mp_add_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) {	2✔
133	return BOTAN_FFI_VISIT(result, [=](auto& res) {	4✔
134	if(result == x)
135	res += static_cast<Botan::word>(y);
136	else
137	res = safe_get(x) + static_cast<Botan::word>(y);
138	});
139	}
140
141	int botan_mp_sub_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) {	1✔
142	return BOTAN_FFI_VISIT(result, [=](auto& res) {	2✔
143	if(result == x)
144	res -= static_cast<Botan::word>(y);
145	else
146	res = safe_get(x) - static_cast<Botan::word>(y);
147	});
148	}
149
150	int botan_mp_mul(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) {	6✔
151	return BOTAN_FFI_VISIT(result, [=](auto& res) {	13✔
152	if(result == x)
153	res *= safe_get(y);
154	else
155	res = safe_get(x) * safe_get(y);
156	});
157	}
158
159	int botan_mp_div(botan_mp_t quotient, botan_mp_t remainder, const botan_mp_t x, const botan_mp_t y) {	2✔
160	return BOTAN_FFI_VISIT(quotient, [=](auto& q) {	6✔
161	Botan::BigInt r;
162	Botan::vartime_divide(safe_get(x), safe_get(y), q, r);
163	safe_get(remainder) = r;
164	});
165	}
166
167	int botan_mp_equal(const botan_mp_t x_w, const botan_mp_t y_w) {	10✔
168	return BOTAN_FFI_VISIT(x_w, [=](const auto& x) -> int { return x == safe_get(y_w); });	20✔
169	}
170
171	int botan_mp_is_zero(const botan_mp_t mp) {	3✔
172	return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_zero(); });	6✔
173	}
174
175	int botan_mp_is_odd(const botan_mp_t mp) {	2✔
176	return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_odd(); });	4✔
177	}
178
179	int botan_mp_is_even(const botan_mp_t mp) {	2✔
180	return BOTAN_FFI_VISIT(mp, [](const auto& bn) -> int { return bn.is_even(); });	4✔
181	}
182
183	int botan_mp_cmp(int* result, const botan_mp_t x_w, const botan_mp_t y_w) {	38✔
184	return BOTAN_FFI_VISIT(x_w, [=](auto& x) { *result = x.cmp(safe_get(y_w)); });	76✔
185	}
186
187	int botan_mp_swap(botan_mp_t x_w, botan_mp_t y_w) {	×
188	return BOTAN_FFI_VISIT(x_w, [=](auto& x) { x.swap(safe_get(y_w)); });	×
189	}
190
191	// Return (base^exponent) % modulus
192	int botan_mp_powmod(botan_mp_t out, const botan_mp_t base, const botan_mp_t exponent, const botan_mp_t modulus) {	2✔
193	return BOTAN_FFI_VISIT(	4✔
194	out, [=](auto& o) { o = Botan::power_mod(safe_get(base), safe_get(exponent), safe_get(modulus)); });
195	}
196
197	int botan_mp_lshift(botan_mp_t out, const botan_mp_t in, size_t shift) {	2✔
198	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = safe_get(in) << shift; });	4✔
199	}
200
201	int botan_mp_rshift(botan_mp_t out, const botan_mp_t in, size_t shift) {	4✔
202	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = safe_get(in) >> shift; });	8✔
203	}
204
205	int botan_mp_mod_inverse(botan_mp_t out, const botan_mp_t in, const botan_mp_t modulus) {	2✔
206	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = Botan::inverse_mod(safe_get(in), safe_get(modulus)); });	4✔
207	}
208
209	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✔
210	return BOTAN_FFI_VISIT(out, [=](auto& o) {	5✔
211	Botan::Modular_Reducer reducer(safe_get(modulus));
212	o = reducer.multiply(safe_get(x), safe_get(y));
213	});
214	}
215
216	int botan_mp_rand_bits(botan_mp_t rand_out, botan_rng_t rng, size_t bits) {	2✔
217	return BOTAN_FFI_VISIT(rng, [=](auto& r) { safe_get(rand_out).randomize(r, bits); });	4✔
218	}
219
220	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✔
221	return BOTAN_FFI_VISIT(	30✔
222	rng, [=](auto& r) { safe_get(rand_out) = Botan::BigInt::random_integer(r, safe_get(lower), safe_get(upper)); });
223	}
224
225	int botan_mp_gcd(botan_mp_t out, const botan_mp_t x, const botan_mp_t y) {	4✔
226	return BOTAN_FFI_VISIT(out, [=](auto& o) { o = Botan::gcd(safe_get(x), safe_get(y)); });	8✔
227	}
228
229	int botan_mp_is_prime(const botan_mp_t mp, botan_rng_t rng, size_t test_prob) {	5✔
230	return BOTAN_FFI_VISIT(mp, [=](const auto& n) { return (Botan::is_prime(n, safe_get(rng), test_prob)) ? 1 : 0; });	10✔
231	}
232
233	int botan_mp_get_bit(const botan_mp_t mp, size_t bit) {	6✔
234	return BOTAN_FFI_VISIT(mp, [=](const auto& n) -> int { return n.get_bit(bit); });	12✔
235	}
236
237	int botan_mp_set_bit(botan_mp_t mp, size_t bit) {	2✔
238	return BOTAN_FFI_VISIT(mp, [=](auto& n) { n.set_bit(bit); });	4✔
239	}
240
241	int botan_mp_clear_bit(botan_mp_t mp, size_t bit) {	2✔
242	return BOTAN_FFI_VISIT(mp, [=](auto& n) { n.clear_bit(bit); });	4✔
243	}
244
245	int botan_mp_num_bits(const botan_mp_t mp, size_t* bits) {	7✔
246	return BOTAN_FFI_VISIT(mp, [=](const auto& n) { *bits = n.bits(); });	14✔
247	}
248
249	int botan_mp_num_bytes(const botan_mp_t mp, size_t* bytes) {	45✔
250	return BOTAN_FFI_VISIT(mp, [=](const auto& n) { *bytes = n.bytes(); });	90✔
251	}
252	}

randombit / botan / 5123321399

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