13190139534

Committed 06 Feb 2025 11:53PM UTC coverage: 91.228% (-0.008%) from 91.236%

Build # 13190139534

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Commit Message

Merge pull request #4632 from randombit/jack/no-pcurves-api

Remove pcurves "user interface" API

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86.99

/src/lib/pubkey/ec_group/ec_inner_pc.cpp

/*
* (C) 2024 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/internal/ec_inner_pc.h>

namespace Botan {

namespace {

PCurve::PrimeOrderCurve::AffinePoint deserialize_pcurve_pt(const PCurve::PrimeOrderCurve& curve,
                                                           std::span<const uint8_t> bytes) {
   if(auto pt = curve.deserialize_point(bytes)) {
      return *pt;
   } else {
      throw Decoding_Error("Invalid elliptic curve point encoding");
   }
}

}  // namespace

const EC_Scalar_Data_PC& EC_Scalar_Data_PC::checked_ref(const EC_Scalar_Data& data) {
   const auto* p = dynamic_cast<const EC_Scalar_Data_PC*>(&data);
   if(!p) {
      throw Invalid_State("Failed conversion to EC_Scalar_Data_PC");
   }
   return *p;
}

const std::shared_ptr<const EC_Group_Data>& EC_Scalar_Data_PC::group() const {
   return m_group;
}

size_t EC_Scalar_Data_PC::bytes() const {
   return this->group()->order_bytes();
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::clone() const {
   return std::make_unique<EC_Scalar_Data_PC>(this->group(), this->value());
}

bool EC_Scalar_Data_PC::is_zero() const {
   auto& pcurve = this->group()->pcurve();
   return pcurve.scalar_is_zero(m_v);
}

bool EC_Scalar_Data_PC::is_eq(const EC_Scalar_Data& other) const {
   auto& pcurve = group()->pcurve();
   return pcurve.scalar_equal(m_v, checked_ref(other).m_v);
}

void EC_Scalar_Data_PC::assign(const EC_Scalar_Data& other) {
   m_v = checked_ref(other).value();
}

void EC_Scalar_Data_PC::square_self() {
   // TODO square in place
   m_v = m_group->pcurve().scalar_square(m_v);
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::negate() const {
   return std::make_unique<EC_Scalar_Data_PC>(m_group, m_group->pcurve().scalar_negate(m_v));
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::invert() const {
   return std::make_unique<EC_Scalar_Data_PC>(m_group, m_group->pcurve().scalar_invert(m_v));
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::invert_vartime() const {
   return std::make_unique<EC_Scalar_Data_PC>(m_group, m_group->pcurve().scalar_invert_vartime(m_v));
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::add(const EC_Scalar_Data& other) const {
   return std::make_unique<EC_Scalar_Data_PC>(m_group, group()->pcurve().scalar_add(m_v, checked_ref(other).m_v));
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::sub(const EC_Scalar_Data& other) const {
   return std::make_unique<EC_Scalar_Data_PC>(m_group, group()->pcurve().scalar_sub(m_v, checked_ref(other).m_v));
}

std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::mul(const EC_Scalar_Data& other) const {
   return std::make_unique<EC_Scalar_Data_PC>(m_group, group()->pcurve().scalar_mul(m_v, checked_ref(other).m_v));
}

void EC_Scalar_Data_PC::serialize_to(std::span<uint8_t> bytes) const {
   BOTAN_ARG_CHECK(bytes.size() == m_group->order_bytes(), "Invalid output length");
   m_group->pcurve().serialize_scalar(bytes, m_v);
}

EC_AffinePoint_Data_PC::EC_AffinePoint_Data_PC(std::shared_ptr<const EC_Group_Data> group,
                                               PCurve::PrimeOrderCurve::AffinePoint pt) :
      m_group(std::move(group)), m_pt(std::move(pt)) {
   auto& pcurve = m_group->pcurve();

   if(!pcurve.affine_point_is_identity(m_pt)) {
      m_xy.resize(1 + 2 * field_element_bytes());
      pcurve.serialize_point(m_xy, m_pt);
   }
}

EC_AffinePoint_Data_PC::EC_AffinePoint_Data_PC(std::shared_ptr<const EC_Group_Data> group,
                                               std::span<const uint8_t> bytes) :
      m_group(std::move(group)), m_pt(deserialize_pcurve_pt(m_group->pcurve(), bytes)) {
   auto& pcurve = m_group->pcurve();

   if(!pcurve.affine_point_is_identity(m_pt)) {
      m_xy.resize(1 + 2 * field_element_bytes());
      pcurve.serialize_point(m_xy, m_pt);
   }
}

const EC_AffinePoint_Data_PC& EC_AffinePoint_Data_PC::checked_ref(const EC_AffinePoint_Data& data) {
   const auto* p = dynamic_cast<const EC_AffinePoint_Data_PC*>(&data);
   if(!p) {
      throw Invalid_State("Failed conversion to EC_AffinePoint_Data_PC");
   }
   return *p;
}

std::unique_ptr<EC_AffinePoint_Data> EC_AffinePoint_Data_PC::clone() const {
   return std::make_unique<EC_AffinePoint_Data_PC>(m_group, m_pt);
}

const std::shared_ptr<const EC_Group_Data>& EC_AffinePoint_Data_PC::group() const {
   return m_group;
}

std::unique_ptr<EC_AffinePoint_Data> EC_AffinePoint_Data_PC::mul(const EC_Scalar_Data& scalar,
                                                                 RandomNumberGenerator& rng,
                                                                 std::vector<BigInt>& ws) const {
   BOTAN_UNUSED(ws);

   BOTAN_ARG_CHECK(scalar.group() == m_group, "Curve mismatch");
   const auto& k = EC_Scalar_Data_PC::checked_ref(scalar).value();
   auto& pcurve = m_group->pcurve();
   auto pt = pcurve.point_to_affine(pcurve.mul(m_pt, k, rng));
   return std::make_unique<EC_AffinePoint_Data_PC>(m_group, std::move(pt));
}

secure_vector<uint8_t> EC_AffinePoint_Data_PC::mul_x_only(const EC_Scalar_Data& scalar,
                                                          RandomNumberGenerator& rng,
                                                          std::vector<BigInt>& ws) const {
   BOTAN_UNUSED(ws);

   BOTAN_ARG_CHECK(scalar.group() == m_group, "Curve mismatch");
   const auto& k = EC_Scalar_Data_PC::checked_ref(scalar).value();
   return m_group->pcurve().mul_x_only(m_pt, k, rng);
}

size_t EC_AffinePoint_Data_PC::field_element_bytes() const {
   return m_group->pcurve().field_element_bytes();
}

bool EC_AffinePoint_Data_PC::is_identity() const {
   return m_xy.empty();
}

void EC_AffinePoint_Data_PC::serialize_x_to(std::span<uint8_t> bytes) const {
   BOTAN_STATE_CHECK(!this->is_identity());
   const size_t fe_bytes = this->field_element_bytes();
   BOTAN_ARG_CHECK(bytes.size() == fe_bytes, "Invalid output size");
   copy_mem(bytes, std::span{m_xy}.subspan(1, fe_bytes));
}

void EC_AffinePoint_Data_PC::serialize_y_to(std::span<uint8_t> bytes) const {
   BOTAN_STATE_CHECK(!this->is_identity());
   const size_t fe_bytes = this->field_element_bytes();
   BOTAN_ARG_CHECK(bytes.size() == fe_bytes, "Invalid output size");
   copy_mem(bytes, std::span{m_xy}.subspan(1 + fe_bytes, fe_bytes));
}

void EC_AffinePoint_Data_PC::serialize_xy_to(std::span<uint8_t> bytes) const {
   BOTAN_STATE_CHECK(!this->is_identity());
   const size_t fe_bytes = this->field_element_bytes();
   BOTAN_ARG_CHECK(bytes.size() == 2 * fe_bytes, "Invalid output size");
   copy_mem(bytes, std::span{m_xy}.last(2 * fe_bytes));
}

void EC_AffinePoint_Data_PC::serialize_compressed_to(std::span<uint8_t> bytes) const {
   BOTAN_STATE_CHECK(!this->is_identity());
   const size_t fe_bytes = this->field_element_bytes();
   BOTAN_ARG_CHECK(bytes.size() == 1 + fe_bytes, "Invalid output size");
   const bool y_is_odd = (m_xy.back() & 0x01) == 0x01;

   BufferStuffer stuffer(bytes);
   stuffer.append(y_is_odd ? 0x03 : 0x02);
   this->serialize_x_to(stuffer.next(fe_bytes));
}

void EC_AffinePoint_Data_PC::serialize_uncompressed_to(std::span<uint8_t> bytes) const {
   BOTAN_STATE_CHECK(!this->is_identity());
   const size_t fe_bytes = this->field_element_bytes();
   BOTAN_ARG_CHECK(bytes.size() == 1 + 2 * fe_bytes, "Invalid output size");
   copy_mem(bytes, m_xy);
}

#if defined(BOTAN_HAS_LEGACY_EC_POINT)
EC_Point EC_AffinePoint_Data_PC::to_legacy_point() const {
   if(this->is_identity()) {
      return EC_Point(m_group->curve());
   } else {
      const size_t fe_bytes = this->field_element_bytes();
      return EC_Point(m_group->curve(),
                      BigInt::from_bytes(std::span{m_xy}.subspan(1, fe_bytes)),
                      BigInt::from_bytes(std::span{m_xy}.last(fe_bytes)));
   }
}
#endif

EC_Mul2Table_Data_PC::EC_Mul2Table_Data_PC(const EC_AffinePoint_Data& q) : m_group(q.group()) {
   BOTAN_ARG_CHECK(q.group() == m_group, "Curve mismatch");

   const auto& pt_q = EC_AffinePoint_Data_PC::checked_ref(q);

   m_tbl = m_group->pcurve().mul2_setup_g(pt_q.value());
}

std::unique_ptr<EC_AffinePoint_Data> EC_Mul2Table_Data_PC::mul2_vartime(const EC_Scalar_Data& xd,
                                                                        const EC_Scalar_Data& yd) const {
   BOTAN_ARG_CHECK(xd.group() == m_group && yd.group() == m_group, "Curve mismatch");

   const auto& x = EC_Scalar_Data_PC::checked_ref(xd);
   const auto& y = EC_Scalar_Data_PC::checked_ref(yd);

   auto& pcurve = m_group->pcurve();

   if(auto pt = pcurve.mul2_vartime(*m_tbl, x.value(), y.value())) {
      return std::make_unique<EC_AffinePoint_Data_PC>(m_group, pcurve.point_to_affine(*pt));
   } else {
      return nullptr;
   }
}

bool EC_Mul2Table_Data_PC::mul2_vartime_x_mod_order_eq(const EC_Scalar_Data& vd,
                                                       const EC_Scalar_Data& xd,
                                                       const EC_Scalar_Data& yd) const {
   BOTAN_ARG_CHECK(xd.group() == m_group && yd.group() == m_group, "Curve mismatch");

   const auto& v = EC_Scalar_Data_PC::checked_ref(vd);
   const auto& x = EC_Scalar_Data_PC::checked_ref(xd);
   const auto& y = EC_Scalar_Data_PC::checked_ref(yd);

   return m_group->pcurve().mul2_vartime_x_mod_order_eq(*m_tbl, v.value(), x.value(), y.value());
}

}  // namespace Botan

1	/*
2	* (C) 2024 Jack Lloyd
3	*
4	* Botan is released under the Simplified BSD License (see license.txt)
5	*/
6
7	#include <botan/internal/ec_inner_pc.h>
8
9	namespace Botan {
10
11	namespace {
12
13	PCurve::PrimeOrderCurve::AffinePoint deserialize_pcurve_pt(const PCurve::PrimeOrderCurve& curve,	×
14	std::span<const uint8_t> bytes) {
15	if(auto pt = curve.deserialize_point(bytes)) {	×
16	return *pt;	×
17	} else {
18	throw Decoding_Error("Invalid elliptic curve point encoding");	×
19	}	×
20	}
21
22	} // namespace
23
24	const EC_Scalar_Data_PC& EC_Scalar_Data_PC::checked_ref(const EC_Scalar_Data& data) {	159,368✔
25	const auto* p = dynamic_cast<const EC_Scalar_Data_PC*>(&data);	159,368✔
26	if(!p) {	159,368✔
27	throw Invalid_State("Failed conversion to EC_Scalar_Data_PC");	×
28	}
29	return *p;	159,368✔
30	}
31
32	const std::shared_ptr<const EC_Group_Data>& EC_Scalar_Data_PC::group() const {	104,989✔
33	return m_group;	41,913✔
34	}
35
36	size_t EC_Scalar_Data_PC::bytes() const {	47,278✔
37	return this->group()->order_bytes();	47,278✔
38	}
39
40	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::clone() const {	41,913✔
41	return std::make_unique<EC_Scalar_Data_PC>(this->group(), this->value());	41,913✔
42	}
43
44	bool EC_Scalar_Data_PC::is_zero() const {	39,697✔
45	auto& pcurve = this->group()->pcurve();	39,697✔
46	return pcurve.scalar_is_zero(m_v);	39,697✔
47	}
48
49	bool EC_Scalar_Data_PC::is_eq(const EC_Scalar_Data& other) const {	1,536✔
50	auto& pcurve = group()->pcurve();	1,536✔
51	return pcurve.scalar_equal(m_v, checked_ref(other).m_v);	1,536✔
52	}
53
54	void EC_Scalar_Data_PC::assign(const EC_Scalar_Data& other) {	×
55	m_v = checked_ref(other).value();	×
56	}	×
57
58	void EC_Scalar_Data_PC::square_self() {	3,186✔
59	// TODO square in place
60	m_v = m_group->pcurve().scalar_square(m_v);	3,186✔
61	}	3,186✔
62
63	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::negate() const {	7,423✔
64	return std::make_unique<EC_Scalar_Data_PC>(m_group, m_group->pcurve().scalar_negate(m_v));	7,423✔
65	}
66
67	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::invert() const {	6,807✔
68	return std::make_unique<EC_Scalar_Data_PC>(m_group, m_group->pcurve().scalar_invert(m_v));	6,807✔
69	}
70
71	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::invert_vartime() const {	19,079✔
72	return std::make_unique<EC_Scalar_Data_PC>(m_group, m_group->pcurve().scalar_invert_vartime(m_v));	19,079✔
73	}
74
75	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::add(const EC_Scalar_Data& other) const {	8,468✔
76	return std::make_unique<EC_Scalar_Data_PC>(m_group, group()->pcurve().scalar_add(m_v, checked_ref(other).m_v));	8,468✔
77	}
78
79	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::sub(const EC_Scalar_Data& other) const {	6,483✔
80	return std::make_unique<EC_Scalar_Data_PC>(m_group, group()->pcurve().scalar_sub(m_v, checked_ref(other).m_v));	6,483✔
81	}
82
83	std::unique_ptr<EC_Scalar_Data> EC_Scalar_Data_PC::mul(const EC_Scalar_Data& other) const {	60,263✔
84	return std::make_unique<EC_Scalar_Data_PC>(m_group, group()->pcurve().scalar_mul(m_v, checked_ref(other).m_v));	60,263✔
85	}
86
87	void EC_Scalar_Data_PC::serialize_to(std::span<uint8_t> bytes) const {	48,145✔
88	BOTAN_ARG_CHECK(bytes.size() == m_group->order_bytes(), "Invalid output length");	48,145✔
89	m_group->pcurve().serialize_scalar(bytes, m_v);	48,145✔
90	}	48,145✔
91
92	EC_AffinePoint_Data_PC::EC_AffinePoint_Data_PC(std::shared_ptr<const EC_Group_Data> group,	71,624✔
93	PCurve::PrimeOrderCurve::AffinePoint pt) :	71,624✔
94	m_group(std::move(group)), m_pt(std::move(pt)) {	71,624✔
95	auto& pcurve = m_group->pcurve();	71,624✔
96
97	if(!pcurve.affine_point_is_identity(m_pt)) {	71,624✔
98	m_xy.resize(1 + 2 * field_element_bytes());	71,408✔
99	pcurve.serialize_point(m_xy, m_pt);	71,408✔
100	}
101	}	71,624✔
102
103	EC_AffinePoint_Data_PC::EC_AffinePoint_Data_PC(std::shared_ptr<const EC_Group_Data> group,	×
104	std::span<const uint8_t> bytes) :	×
105	m_group(std::move(group)), m_pt(deserialize_pcurve_pt(m_group->pcurve(), bytes)) {	×
106	auto& pcurve = m_group->pcurve();	×
107
108	if(!pcurve.affine_point_is_identity(m_pt)) {	×
109	m_xy.resize(1 + 2 * field_element_bytes());	×
110	pcurve.serialize_point(m_xy, m_pt);	×
111	}
112	}	×
113
114	const EC_AffinePoint_Data_PC& EC_AffinePoint_Data_PC::checked_ref(const EC_AffinePoint_Data& data) {	32,785✔
115	const auto* p = dynamic_cast<const EC_AffinePoint_Data_PC*>(&data);	32,785✔
116	if(!p) {	32,785✔
117	throw Invalid_State("Failed conversion to EC_AffinePoint_Data_PC");	×
118	}
119	return *p;	32,785✔
120	}
121
122	std::unique_ptr<EC_AffinePoint_Data> EC_AffinePoint_Data_PC::clone() const {	11,698✔
123	return std::make_unique<EC_AffinePoint_Data_PC>(m_group, m_pt);	11,698✔
124	}
125
126	const std::shared_ptr<const EC_Group_Data>& EC_AffinePoint_Data_PC::group() const {	49,590✔
127	return m_group;	49,590✔
128	}
129
130	std::unique_ptr<EC_AffinePoint_Data> EC_AffinePoint_Data_PC::mul(const EC_Scalar_Data& scalar,	10,020✔
131	RandomNumberGenerator& rng,
132	std::vector<BigInt>& ws) const {
133	BOTAN_UNUSED(ws);	10,020✔
134
135	BOTAN_ARG_CHECK(scalar.group() == m_group, "Curve mismatch");	10,020✔
136	const auto& k = EC_Scalar_Data_PC::checked_ref(scalar).value();	10,020✔
137	auto& pcurve = m_group->pcurve();	10,020✔
138	auto pt = pcurve.point_to_affine(pcurve.mul(m_pt, k, rng));	10,020✔
139	return std::make_unique<EC_AffinePoint_Data_PC>(m_group, std::move(pt));	10,020✔
140	}	10,020✔
141
142	secure_vector<uint8_t> EC_AffinePoint_Data_PC::mul_x_only(const EC_Scalar_Data& scalar,	2,649✔
143	RandomNumberGenerator& rng,
144	std::vector<BigInt>& ws) const {
145	BOTAN_UNUSED(ws);	2,649✔
146
147	BOTAN_ARG_CHECK(scalar.group() == m_group, "Curve mismatch");	2,649✔
148	const auto& k = EC_Scalar_Data_PC::checked_ref(scalar).value();	2,649✔
149	return m_group->pcurve().mul_x_only(m_pt, k, rng);	2,649✔
150	}
151
152	size_t EC_AffinePoint_Data_PC::field_element_bytes() const {	149,516✔
153	return m_group->pcurve().field_element_bytes();	149,516✔
154	}
155
156	bool EC_AffinePoint_Data_PC::is_identity() const {	80,484✔
157	return m_xy.empty();	80,484✔
158	}
159
160	void EC_AffinePoint_Data_PC::serialize_x_to(std::span<uint8_t> bytes) const {	8,625✔
161	BOTAN_STATE_CHECK(!this->is_identity());	8,625✔
162	const size_t fe_bytes = this->field_element_bytes();	8,625✔
163	BOTAN_ARG_CHECK(bytes.size() == fe_bytes, "Invalid output size");	8,625✔
164	copy_mem(bytes, std::span{m_xy}.subspan(1, fe_bytes));	8,625✔
165	}	8,625✔
166
167	void EC_AffinePoint_Data_PC::serialize_y_to(std::span<uint8_t> bytes) const {	20✔
168	BOTAN_STATE_CHECK(!this->is_identity());	20✔
169	const size_t fe_bytes = this->field_element_bytes();	20✔
170	BOTAN_ARG_CHECK(bytes.size() == fe_bytes, "Invalid output size");	20✔
171	copy_mem(bytes, std::span{m_xy}.subspan(1 + fe_bytes, fe_bytes));	20✔
172	}	20✔
173
174	void EC_AffinePoint_Data_PC::serialize_xy_to(std::span<uint8_t> bytes) const {	150✔
175	BOTAN_STATE_CHECK(!this->is_identity());	150✔
176	const size_t fe_bytes = this->field_element_bytes();	150✔
177	BOTAN_ARG_CHECK(bytes.size() == 2 * fe_bytes, "Invalid output size");	150✔
178	copy_mem(bytes, std::span{m_xy}.last(2 * fe_bytes));	150✔
179	}	150✔
180
181	void EC_AffinePoint_Data_PC::serialize_compressed_to(std::span<uint8_t> bytes) const {	8,203✔
182	BOTAN_STATE_CHECK(!this->is_identity());	8,203✔
183	const size_t fe_bytes = this->field_element_bytes();	8,203✔
184	BOTAN_ARG_CHECK(bytes.size() == 1 + fe_bytes, "Invalid output size");	8,203✔
185	const bool y_is_odd = (m_xy.back() & 0x01) == 0x01;	8,203✔
186
187	BufferStuffer stuffer(bytes);	8,203✔
188	stuffer.append(y_is_odd ? 0x03 : 0x02);	12,410✔
189	this->serialize_x_to(stuffer.next(fe_bytes));	8,203✔
190	}	8,203✔
191
192	void EC_AffinePoint_Data_PC::serialize_uncompressed_to(std::span<uint8_t> bytes) const {	15,285✔
193	BOTAN_STATE_CHECK(!this->is_identity());	15,285✔
194	const size_t fe_bytes = this->field_element_bytes();	15,285✔
195	BOTAN_ARG_CHECK(bytes.size() == 1 + 2 * fe_bytes, "Invalid output size");	15,285✔
196	copy_mem(bytes, m_xy);	15,285✔
197	}	15,285✔
198
199	#if defined(BOTAN_HAS_LEGACY_EC_POINT)
200	EC_Point EC_AffinePoint_Data_PC::to_legacy_point() const {	21,855✔
201	if(this->is_identity()) {	21,855✔
202	return EC_Point(m_group->curve());	96✔
203	} else {
204	const size_t fe_bytes = this->field_element_bytes();	21,759✔
205	return EC_Point(m_group->curve(),	21,759✔
206	BigInt::from_bytes(std::span{m_xy}.subspan(1, fe_bytes)),	43,518✔
207	BigInt::from_bytes(std::span{m_xy}.last(fe_bytes)));	65,277✔
208	}
209	}
210	#endif
211
212	EC_Mul2Table_Data_PC::EC_Mul2Table_Data_PC(const EC_AffinePoint_Data& q) : m_group(q.group()) {	11,175✔
213	BOTAN_ARG_CHECK(q.group() == m_group, "Curve mismatch");	11,175✔
214
215	const auto& pt_q = EC_AffinePoint_Data_PC::checked_ref(q);	11,175✔
216
217	m_tbl = m_group->pcurve().mul2_setup_g(pt_q.value());	11,175✔
218	}	11,175✔
219
220	std::unique_ptr<EC_AffinePoint_Data> EC_Mul2Table_Data_PC::mul2_vartime(const EC_Scalar_Data& xd,	1,099✔
221	const EC_Scalar_Data& yd) const {
222	BOTAN_ARG_CHECK(xd.group() == m_group && yd.group() == m_group, "Curve mismatch");	1,099✔
223
224	const auto& x = EC_Scalar_Data_PC::checked_ref(xd);	1,099✔
225	const auto& y = EC_Scalar_Data_PC::checked_ref(yd);	1,099✔
226
227	auto& pcurve = m_group->pcurve();	1,099✔
228
229	if(auto pt = pcurve.mul2_vartime(*m_tbl, x.value(), y.value())) {	1,099✔
230	return std::make_unique<EC_AffinePoint_Data_PC>(m_group, pcurve.point_to_affine(*pt));	1,099✔
231	} else {
232	return nullptr;	×
233	}	1,099✔
234	}
235
236	bool EC_Mul2Table_Data_PC::mul2_vartime_x_mod_order_eq(const EC_Scalar_Data& vd,	17,630✔
237	const EC_Scalar_Data& xd,
238	const EC_Scalar_Data& yd) const {
239	BOTAN_ARG_CHECK(xd.group() == m_group && yd.group() == m_group, "Curve mismatch");	17,630✔
240
241	const auto& v = EC_Scalar_Data_PC::checked_ref(vd);	17,630✔
242	const auto& x = EC_Scalar_Data_PC::checked_ref(xd);	17,630✔
243	const auto& y = EC_Scalar_Data_PC::checked_ref(yd);	17,630✔
244
245	return m_group->pcurve().mul2_vartime_x_mod_order_eq(*m_tbl, v.value(), x.value(), y.value());	17,630✔
246	}
247
248	} // namespace Botan

randombit / botan / 13190139534

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