6057704243

Committed 02 Sep 2023 10:05AM UTC coverage: 91.729% (+0.01%) from 91.718%

Build # 6057704243

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Pull #3680

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web-flow

Commit Message

Merge fc59ca615 into 2c2ff3c71

Pull Request Pull Request #3680: Kuznyechik block cipher

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82.39

/src/lib/asn1/der_enc.cpp

/*
* DER Encoder
* (C) 1999-2007,2018 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/der_enc.h>

#include <botan/asn1_obj.h>
#include <botan/bigint.h>
#include <botan/internal/bit_ops.h>
#include <botan/internal/fmt.h>
#include <botan/internal/loadstor.h>
#include <algorithm>

namespace Botan {

namespace {

/*
* DER encode an ASN.1 type tag
*/
void encode_tag(std::vector<uint8_t>& encoded_tag, ASN1_Type type_tag_e, ASN1_Class class_tag_e) {
   const uint32_t type_tag = static_cast<uint32_t>(type_tag_e);
   const uint32_t class_tag = static_cast<uint32_t>(class_tag_e);

   if((class_tag | 0xE0) != 0xE0) {
      throw Encoding_Error(fmt("DER_Encoder: Invalid class tag {}", std::to_string(class_tag)));
   }

   if(type_tag <= 30) {
      encoded_tag.push_back(static_cast<uint8_t>(type_tag | class_tag));
   } else {
      size_t blocks = high_bit(static_cast<uint32_t>(type_tag)) + 6;
      blocks = (blocks - (blocks % 7)) / 7;

      BOTAN_ASSERT_NOMSG(blocks > 0);

      encoded_tag.push_back(static_cast<uint8_t>(class_tag | 0x1F));
      for(size_t i = 0; i != blocks - 1; ++i) {
         encoded_tag.push_back(0x80 | ((type_tag >> 7 * (blocks - i - 1)) & 0x7F));
      }
      encoded_tag.push_back(type_tag & 0x7F);
   }
}

/*
* DER encode an ASN.1 length field
*/
void encode_length(std::vector<uint8_t>& encoded_length, size_t length) {
   if(length <= 127) {
      encoded_length.push_back(static_cast<uint8_t>(length));
   } else {
      const size_t bytes_needed = significant_bytes(length);

      encoded_length.push_back(static_cast<uint8_t>(0x80 | bytes_needed));

      for(size_t i = sizeof(length) - bytes_needed; i < sizeof(length); ++i) {
         encoded_length.push_back(get_byte_var(i, length));
      }
   }
}

}  // namespace

DER_Encoder::DER_Encoder(secure_vector<uint8_t>& vec) {
   m_append_output = [&vec](const uint8_t b[], size_t l) { vec.insert(vec.end(), b, b + l); };
}

DER_Encoder::DER_Encoder(std::vector<uint8_t>& vec) {
   m_append_output = [&vec](const uint8_t b[], size_t l) { vec.insert(vec.end(), b, b + l); };
}

/*
* Push the encoded SEQUENCE/SET to the encoder stream
*/
void DER_Encoder::DER_Sequence::push_contents(DER_Encoder& der) {
   const auto real_class_tag = m_class_tag | ASN1_Class::Constructed;

   if(m_type_tag == ASN1_Type::Set) {
      std::sort(m_set_contents.begin(), m_set_contents.end());
      for(const auto& set_elem : m_set_contents) {
         m_contents += set_elem;
      }
      m_set_contents.clear();
   }

   der.add_object(m_type_tag, real_class_tag, m_contents.data(), m_contents.size());
   m_contents.clear();
}

/*
* Add an encoded value to the SEQUENCE/SET
*/
void DER_Encoder::DER_Sequence::add_bytes(const uint8_t data[], size_t length) {
   if(m_type_tag == ASN1_Type::Set) {
      m_set_contents.push_back(secure_vector<uint8_t>(data, data + length));
   } else {
      m_contents += std::make_pair(data, length);
   }
}

void DER_Encoder::DER_Sequence::add_bytes(const uint8_t hdr[], size_t hdr_len, const uint8_t val[], size_t val_len) {
   if(m_type_tag == ASN1_Type::Set) {
      secure_vector<uint8_t> m;
      m.reserve(hdr_len + val_len);
      m += std::make_pair(hdr, hdr_len);
      m += std::make_pair(val, val_len);
      m_set_contents.push_back(std::move(m));
   } else {
      m_contents += std::make_pair(hdr, hdr_len);
      m_contents += std::make_pair(val, val_len);
   }
}

/*
* Return the type and class taggings
*/
uint32_t DER_Encoder::DER_Sequence::tag_of() const {
   return m_type_tag | m_class_tag;
}

/*
* DER_Sequence Constructor
*/
DER_Encoder::DER_Sequence::DER_Sequence(ASN1_Type t1, ASN1_Class t2) : m_type_tag(t1), m_class_tag(t2) {}

/*
* Return the encoded contents
*/
secure_vector<uint8_t> DER_Encoder::get_contents() {
   if(!m_subsequences.empty()) {
      throw Invalid_State("DER_Encoder: Sequence hasn't been marked done");
   }

   if(m_append_output) {
      throw Invalid_State("DER_Encoder Cannot get contents when using output vector");
   }

   secure_vector<uint8_t> output;
   std::swap(output, m_default_outbuf);
   return output;
}

std::vector<uint8_t> DER_Encoder::get_contents_unlocked() {
   if(!m_subsequences.empty()) {
      throw Invalid_State("DER_Encoder: Sequence hasn't been marked done");
   }

   if(m_append_output) {
      throw Invalid_State("DER_Encoder Cannot get contents when using output vector");
   }

   std::vector<uint8_t> output(m_default_outbuf.begin(), m_default_outbuf.end());
   m_default_outbuf.clear();
   return output;
}

/*
* Start a new ASN.1 SEQUENCE/SET/EXPLICIT
*/
DER_Encoder& DER_Encoder::start_cons(ASN1_Type type_tag, ASN1_Class class_tag) {
   m_subsequences.push_back(DER_Sequence(type_tag, class_tag));
   return (*this);
}

/*
* Finish the current ASN.1 SEQUENCE/SET/EXPLICIT
*/
DER_Encoder& DER_Encoder::end_cons() {
   if(m_subsequences.empty()) {
      throw Invalid_State("DER_Encoder::end_cons: No such sequence");
   }

   DER_Sequence last_seq = std::move(m_subsequences[m_subsequences.size() - 1]);
   m_subsequences.pop_back();
   last_seq.push_contents(*this);

   return (*this);
}

/*
* Start a new ASN.1 EXPLICIT encoding
*/
DER_Encoder& DER_Encoder::start_explicit(uint16_t type_no) {
   ASN1_Type type_tag = static_cast<ASN1_Type>(type_no);

   // This would confuse DER_Sequence
   if(type_tag == ASN1_Type::Set) {
      throw Internal_Error("DER_Encoder.start_explicit(SET) not supported");
   }

   return start_cons(type_tag, ASN1_Class::ContextSpecific);
}

/*
* Finish the current ASN.1 EXPLICIT encoding
*/
DER_Encoder& DER_Encoder::end_explicit() {
   return end_cons();
}

/*
* Write raw bytes into the stream
*/
DER_Encoder& DER_Encoder::raw_bytes(const uint8_t bytes[], size_t length) {
   if(!m_subsequences.empty()) {
      m_subsequences[m_subsequences.size() - 1].add_bytes(bytes, length);
   } else if(m_append_output) {
      m_append_output(bytes, length);
   } else {
      m_default_outbuf += std::make_pair(bytes, length);
   }

   return (*this);
}

/*
* Write the encoding of the byte(s)
*/
DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, const uint8_t rep[], size_t length) {
   std::vector<uint8_t> hdr;
   encode_tag(hdr, type_tag, class_tag);
   encode_length(hdr, length);

   if(!m_subsequences.empty()) {
      m_subsequences[m_subsequences.size() - 1].add_bytes(hdr.data(), hdr.size(), rep, length);
   } else if(m_append_output) {
      m_append_output(hdr.data(), hdr.size());
      m_append_output(rep, length);
   } else {
      m_default_outbuf += hdr;
      m_default_outbuf += std::make_pair(rep, length);
   }

   return (*this);
}

/*
* Encode a NULL object
*/
DER_Encoder& DER_Encoder::encode_null() {
   return add_object(ASN1_Type::Null, ASN1_Class::Universal, nullptr, 0);
}

/*
* DER encode a BOOLEAN
*/
DER_Encoder& DER_Encoder::encode(bool is_true) {
   return encode(is_true, ASN1_Type::Boolean, ASN1_Class::Universal);
}

/*
* DER encode a small INTEGER
*/
DER_Encoder& DER_Encoder::encode(size_t n) {
   return encode(BigInt::from_u64(n), ASN1_Type::Integer, ASN1_Class::Universal);
}

/*
* DER encode a small INTEGER
*/
DER_Encoder& DER_Encoder::encode(const BigInt& n) {
   return encode(n, ASN1_Type::Integer, ASN1_Class::Universal);
}

/*
* Encode this object
*/
DER_Encoder& DER_Encoder::encode(const uint8_t bytes[], size_t length, ASN1_Type real_type) {
   return encode(bytes, length, real_type, real_type, ASN1_Class::Universal);
}

/*
* DER encode a BOOLEAN
*/
DER_Encoder& DER_Encoder::encode(bool is_true, ASN1_Type type_tag, ASN1_Class class_tag) {
   uint8_t val = is_true ? 0xFF : 0x00;
   return add_object(type_tag, class_tag, &val, 1);
}

/*
* DER encode a small INTEGER
*/
DER_Encoder& DER_Encoder::encode(size_t n, ASN1_Type type_tag, ASN1_Class class_tag) {
   return encode(BigInt::from_u64(n), type_tag, class_tag);
}

/*
* DER encode an INTEGER
*/
DER_Encoder& DER_Encoder::encode(const BigInt& n, ASN1_Type type_tag, ASN1_Class class_tag) {
   if(n == 0) {
      return add_object(type_tag, class_tag, 0);
   }

   const size_t extra_zero = (n.bits() % 8 == 0) ? 1 : 0;
   secure_vector<uint8_t> contents(extra_zero + n.bytes());
   n.binary_encode(&contents[extra_zero]);
   if(n < 0) {
      for(unsigned char& content : contents) {
         content = ~content;
      }
      for(size_t i = contents.size(); i > 0; --i) {
         if(++contents[i - 1]) {
            break;
         }
      }
   }

   return add_object(type_tag, class_tag, contents);
}

/*
* DER encode an OCTET STRING or BIT STRING
*/
DER_Encoder& DER_Encoder::encode(
   const uint8_t bytes[], size_t length, ASN1_Type real_type, ASN1_Type type_tag, ASN1_Class class_tag) {
   if(real_type != ASN1_Type::OctetString && real_type != ASN1_Type::BitString) {
      throw Invalid_Argument("DER_Encoder: Invalid tag for byte/bit string");
   }

   if(real_type == ASN1_Type::BitString) {
      secure_vector<uint8_t> encoded;
      encoded.push_back(0);
      encoded += std::make_pair(bytes, length);
      return add_object(type_tag, class_tag, encoded);
   } else {
      return add_object(type_tag, class_tag, bytes, length);
   }
}

DER_Encoder& DER_Encoder::encode(const ASN1_Object& obj) {
   obj.encode_into(*this);
   return (*this);
}

/*
* Write the encoding of the byte(s)
*/
DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, std::string_view rep_str) {
   const uint8_t* rep = cast_char_ptr_to_uint8(rep_str.data());
   const size_t rep_len = rep_str.size();
   return add_object(type_tag, class_tag, rep, rep_len);
}

/*
* Write the encoding of the byte
*/
DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, uint8_t rep) {
   return add_object(type_tag, class_tag, &rep, 1);
}

}  // namespace Botan

1	/*
2	* DER Encoder
3	* (C) 1999-2007,2018 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#include <botan/der_enc.h>
9
10	#include <botan/asn1_obj.h>
11	#include <botan/bigint.h>
12	#include <botan/internal/bit_ops.h>
13	#include <botan/internal/fmt.h>
14	#include <botan/internal/loadstor.h>
15	#include <algorithm>
16
17	namespace Botan {
18
19	namespace {
20
21	/*
22	* DER encode an ASN.1 type tag
23	*/
24	void encode_tag(std::vector<uint8_t>& encoded_tag, ASN1_Type type_tag_e, ASN1_Class class_tag_e) {	333,798✔
25	const uint32_t type_tag = static_cast<uint32_t>(type_tag_e);	333,798✔
26	const uint32_t class_tag = static_cast<uint32_t>(class_tag_e);	333,798✔
27
28	if((class_tag \| 0xE0) != 0xE0) {	333,798✔
29	throw Encoding_Error(fmt("DER_Encoder: Invalid class tag {}", std::to_string(class_tag)));	×
30	}
31
32	if(type_tag <= 30) {	333,798✔
33	encoded_tag.push_back(static_cast<uint8_t>(type_tag \| class_tag));	332,694✔
34	} else {
35	size_t blocks = high_bit(static_cast<uint32_t>(type_tag)) + 6;	1,104✔
36	blocks = (blocks - (blocks % 7)) / 7;	1,104✔
37
38	BOTAN_ASSERT_NOMSG(blocks > 0);	1,104✔
39
40	encoded_tag.push_back(static_cast<uint8_t>(class_tag \| 0x1F));	1,104✔
41	for(size_t i = 0; i != blocks - 1; ++i) {	2,263✔
42	encoded_tag.push_back(0x80 \| ((type_tag >> 7 * (blocks - i - 1)) & 0x7F));	1,159✔
43	}
44	encoded_tag.push_back(type_tag & 0x7F);	1,104✔
45	}
46	}	333,798✔
47
48	/*
49	* DER encode an ASN.1 length field
50	*/
51	void encode_length(std::vector<uint8_t>& encoded_length, size_t length) {	333,798✔
52	if(length <= 127) {	333,798✔
53	encoded_length.push_back(static_cast<uint8_t>(length));	248,395✔
54	} else {
55	const size_t bytes_needed = significant_bytes(length);	85,403✔
56
57	encoded_length.push_back(static_cast<uint8_t>(0x80 \| bytes_needed));	85,403✔
58
59	for(size_t i = sizeof(length) - bytes_needed; i < sizeof(length); ++i) {	241,569✔
60	encoded_length.push_back(get_byte_var(i, length));	156,166✔
61	}
62	}
63	}	333,798✔
64
65	} // namespace
66
67	DER_Encoder::DER_Encoder(secure_vector<uint8_t>& vec) {	×
68	m_append_output = [&vec](const uint8_t b[], size_t l) { vec.insert(vec.end(), b, b + l); };	×
69	}	×
70
71	DER_Encoder::DER_Encoder(std::vector<uint8_t>& vec) {	130,212✔
72	m_append_output = [&vec](const uint8_t b[], size_t l) { vec.insert(vec.end(), b, b + l); };	390,636✔
73	}	130,212✔
74
75	/*
76	* Push the encoded SEQUENCE/SET to the encoder stream
77	*/
78	void DER_Encoder::DER_Sequence::push_contents(DER_Encoder& der) {	179,325✔
79	const auto real_class_tag = m_class_tag \| ASN1_Class::Constructed;	179,325✔
80
81	if(m_type_tag == ASN1_Type::Set) {	179,325✔
82	std::sort(m_set_contents.begin(), m_set_contents.end());	1,271✔
83	for(const auto& set_elem : m_set_contents) {	2,542✔
84	m_contents += set_elem;	1,271✔
85	}
86	m_set_contents.clear();	1,271✔
87	}
88
89	der.add_object(m_type_tag, real_class_tag, m_contents.data(), m_contents.size());	179,325✔
90	m_contents.clear();	179,325✔
91	}	179,325✔
92
93	/*
94	* Add an encoded value to the SEQUENCE/SET
95	*/
96	void DER_Encoder::DER_Sequence::add_bytes(const uint8_t data[], size_t length) {	113,676✔
97	if(m_type_tag == ASN1_Type::Set) {	113,676✔
98	m_set_contents.push_back(secure_vector<uint8_t>(data, data + length));	310✔
99	} else {
100	m_contents += std::make_pair(data, length);	113,521✔
101	}
102	}	113,676✔
103
104	void DER_Encoder::DER_Sequence::add_bytes(const uint8_t hdr[], size_t hdr_len, const uint8_t val[], size_t val_len) {	199,254✔
105	if(m_type_tag == ASN1_Type::Set) {	199,254✔
106	secure_vector<uint8_t> m;	1,116✔
107	m.reserve(hdr_len + val_len);	1,116✔
108	m += std::make_pair(hdr, hdr_len);	1,116✔
109	m += std::make_pair(val, val_len);	1,116✔
110	m_set_contents.push_back(std::move(m));	1,116✔
111	} else {	1,116✔
112	m_contents += std::make_pair(hdr, hdr_len);	198,138✔
113	m_contents += std::make_pair(val, val_len);	198,138✔
114	}
115	}	199,254✔
116
117	/*
118	* Return the type and class taggings
119	*/
120	uint32_t DER_Encoder::DER_Sequence::tag_of() const {	×
121	return m_type_tag \| m_class_tag;	×
122	}
123
124	/*
125	* DER_Sequence Constructor
126	*/
127	DER_Encoder::DER_Sequence::DER_Sequence(ASN1_Type t1, ASN1_Class t2) : m_type_tag(t1), m_class_tag(t2) {}	179,325✔
128
129	/*
130	* Return the encoded contents
131	*/
132	secure_vector<uint8_t> DER_Encoder::get_contents() {	3,635✔
133	if(!m_subsequences.empty()) {	3,635✔
134	throw Invalid_State("DER_Encoder: Sequence hasn't been marked done");	×
135	}
136
137	if(m_append_output) {	3,635✔
138	throw Invalid_State("DER_Encoder Cannot get contents when using output vector");	×
139	}
140
141	secure_vector<uint8_t> output;	3,635✔
142	std::swap(output, m_default_outbuf);	3,635✔
143	return output;	3,635✔
144	}
145
146	std::vector<uint8_t> DER_Encoder::get_contents_unlocked() {	×
147	if(!m_subsequences.empty()) {	×
148	throw Invalid_State("DER_Encoder: Sequence hasn't been marked done");	×
149	}
150
151	if(m_append_output) {	×
152	throw Invalid_State("DER_Encoder Cannot get contents when using output vector");	×
153	}
154
155	std::vector<uint8_t> output(m_default_outbuf.begin(), m_default_outbuf.end());	×
156	m_default_outbuf.clear();	×
157	return output;	×
158	}
159
160	/*
161	* Start a new ASN.1 SEQUENCE/SET/EXPLICIT
162	*/
163	DER_Encoder& DER_Encoder::start_cons(ASN1_Type type_tag, ASN1_Class class_tag) {	179,325✔
164	m_subsequences.push_back(DER_Sequence(type_tag, class_tag));	179,325✔
165	return (*this);	179,325✔
166	}
167
168	/*
169	* Finish the current ASN.1 SEQUENCE/SET/EXPLICIT
170	*/
171	DER_Encoder& DER_Encoder::end_cons() {	179,325✔
172	if(m_subsequences.empty()) {	179,325✔
173	throw Invalid_State("DER_Encoder::end_cons: No such sequence");	×
174	}
175
176	DER_Sequence last_seq = std::move(m_subsequences[m_subsequences.size() - 1]);	179,325✔
177	m_subsequences.pop_back();	179,325✔
178	last_seq.push_contents(*this);	179,325✔
179
180	return (*this);	179,325✔
181	}	179,325✔
182
183	/*
184	* Start a new ASN.1 EXPLICIT encoding
185	*/
186	DER_Encoder& DER_Encoder::start_explicit(uint16_t type_no) {	718✔
187	ASN1_Type type_tag = static_cast<ASN1_Type>(type_no);	718✔
188
189	// This would confuse DER_Sequence
190	if(type_tag == ASN1_Type::Set) {	718✔
191	throw Internal_Error("DER_Encoder.start_explicit(SET) not supported");	×
192	}
193
194	return start_cons(type_tag, ASN1_Class::ContextSpecific);	718✔
195	}
196
197	/*
198	* Finish the current ASN.1 EXPLICIT encoding
199	*/
200	DER_Encoder& DER_Encoder::end_explicit() {	718✔
201	return end_cons();	718✔
202	}
203
204	/*
205	* Write raw bytes into the stream
206	*/
207	DER_Encoder& DER_Encoder::raw_bytes(const uint8_t bytes[], size_t length) {	113,676✔
208	if(!m_subsequences.empty()) {	113,676✔
209	m_subsequences[m_subsequences.size() - 1].add_bytes(bytes, length);	113,676✔
210	} else if(m_append_output) {	×
211	m_append_output(bytes, length);	×
212	} else {
213	m_default_outbuf += std::make_pair(bytes, length);	×
214	}
215
216	return (*this);	113,676✔
217	}
218
219	/*
220	* Write the encoding of the byte(s)
221	*/
222	DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, const uint8_t rep[], size_t length) {	333,798✔
223	std::vector<uint8_t> hdr;	333,798✔
224	encode_tag(hdr, type_tag, class_tag);	333,798✔
225	encode_length(hdr, length);	333,798✔
226
227	if(!m_subsequences.empty()) {	333,798✔
228	m_subsequences[m_subsequences.size() - 1].add_bytes(hdr.data(), hdr.size(), rep, length);	199,254✔
229	} else if(m_append_output) {	134,544✔
230	m_append_output(hdr.data(), hdr.size());	130,212✔
231	m_append_output(rep, length);	260,424✔
232	} else {
233	m_default_outbuf += hdr;	4,332✔
234	m_default_outbuf += std::make_pair(rep, length);	4,332✔
235	}
236
237	return (*this);	333,798✔
238	}	333,798✔
239
240	/*
241	* Encode a NULL object
242	*/
243	DER_Encoder& DER_Encoder::encode_null() {	×
244	return add_object(ASN1_Type::Null, ASN1_Class::Universal, nullptr, 0);	×
245	}
246
247	/*
248	* DER encode a BOOLEAN
249	*/
250	DER_Encoder& DER_Encoder::encode(bool is_true) {	4,213✔
251	return encode(is_true, ASN1_Type::Boolean, ASN1_Class::Universal);	4,213✔
252	}
253
254	/*
255	* DER encode a small INTEGER
256	*/
257	DER_Encoder& DER_Encoder::encode(size_t n) {	26,548✔
258	return encode(BigInt::from_u64(n), ASN1_Type::Integer, ASN1_Class::Universal);	47,449✔
259	}
260
261	/*
262	* DER encode a small INTEGER
263	*/
264	DER_Encoder& DER_Encoder::encode(const BigInt& n) {	18,831✔
265	return encode(n, ASN1_Type::Integer, ASN1_Class::Universal);	18,831✔
266	}
267
268	/*
269	* Encode this object
270	*/
271	DER_Encoder& DER_Encoder::encode(const uint8_t bytes[], size_t length, ASN1_Type real_type) {	30,380✔
272	return encode(bytes, length, real_type, real_type, ASN1_Class::Universal);	30,380✔
273	}
274
275	/*
276	* DER encode a BOOLEAN
277	*/
278	DER_Encoder& DER_Encoder::encode(bool is_true, ASN1_Type type_tag, ASN1_Class class_tag) {	4,213✔
279	uint8_t val = is_true ? 0xFF : 0x00;	4,213✔
280	return add_object(type_tag, class_tag, &val, 1);	4,213✔
281	}
282
283	/*
284	* DER encode a small INTEGER
285	*/
286	DER_Encoder& DER_Encoder::encode(size_t n, ASN1_Type type_tag, ASN1_Class class_tag) {	23✔
287	return encode(BigInt::from_u64(n), type_tag, class_tag);	46✔
288	}
289
290	/*
291	* DER encode an INTEGER
292	*/
293	DER_Encoder& DER_Encoder::encode(const BigInt& n, ASN1_Type type_tag, ASN1_Class class_tag) {	45,402✔
294	if(n == 0) {	45,402✔
295	return add_object(type_tag, class_tag, 0);	6,027✔
296	}
297
298	const size_t extra_zero = (n.bits() % 8 == 0) ? 1 : 0;	39,375✔
299	secure_vector<uint8_t> contents(extra_zero + n.bytes());	39,375✔
300	n.binary_encode(&contents[extra_zero]);	39,375✔
301	if(n < 0) {	39,375✔
302	for(unsigned char& content : contents) {	×
303	content = ~content;	×
304	}
305	for(size_t i = contents.size(); i > 0; --i) {	×
306	if(++contents[i - 1]) {	×
307	break;
308	}
309	}
310	}
311
312	return add_object(type_tag, class_tag, contents);	39,375✔
313	}	45,402✔
314
315	/*
316	* DER encode an OCTET STRING or BIT STRING
317	*/
318	DER_Encoder& DER_Encoder::encode(	30,678✔
319	const uint8_t bytes[], size_t length, ASN1_Type real_type, ASN1_Type type_tag, ASN1_Class class_tag) {
320	if(real_type != ASN1_Type::OctetString && real_type != ASN1_Type::BitString) {	30,678✔
321	throw Invalid_Argument("DER_Encoder: Invalid tag for byte/bit string");	×
322	}
323
324	if(real_type == ASN1_Type::BitString) {	30,678✔
325	secure_vector<uint8_t> encoded;	19,290✔
326	encoded.push_back(0);	19,290✔
327	encoded += std::make_pair(bytes, length);	19,290✔
328	return add_object(type_tag, class_tag, encoded);	19,290✔
329	} else {	19,290✔
330	return add_object(type_tag, class_tag, bytes, length);	11,388✔
331	}
332	}
333
334	DER_Encoder& DER_Encoder::encode(const ASN1_Object& obj) {	82,938✔
335	obj.encode_into(*this);	82,938✔
336	return (*this);	82,938✔
337	}
338
339	/*
340	* Write the encoding of the byte(s)
341	*/
342	DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, std::string_view rep_str) {	4,480✔
343	const uint8_t* rep = cast_char_ptr_to_uint8(rep_str.data());	4,480✔
344	const size_t rep_len = rep_str.size();	4,480✔
345	return add_object(type_tag, class_tag, rep, rep_len);	4,480✔
346	}
347
348	/*
349	* Write the encoding of the byte
350	*/
351	DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, uint8_t rep) {	6,027✔
352	return add_object(type_tag, class_tag, &rep, 1);	6,027✔
353	}
354
355	} // namespace Botan

randombit / botan / 6057704243

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