5124576186

Committed 30 May 2023 06:27PM UTC coverage: 91.972% (-0.2%) from 92.218%

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Update support table

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83.12

/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) {	298,945✔
25	const uint32_t type_tag = static_cast<uint32_t>(type_tag_e);	298,945✔
26	const uint32_t class_tag = static_cast<uint32_t>(class_tag_e);	298,945✔
27
28	if((class_tag \| 0xE0) != 0xE0) {	298,945✔
29	throw Encoding_Error(fmt("DER_Encoder: Invalid class tag {}", std::to_string(class_tag)));	×
30	}
31
32	if(type_tag <= 30) {	298,945✔
33	encoded_tag.push_back(static_cast<uint8_t>(type_tag \| class_tag));	297,841✔
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	}	298,945✔
47
48	/*
49	* DER encode an ASN.1 length field
50	*/
51	void encode_length(std::vector<uint8_t>& encoded_length, size_t length) {	298,945✔
52	if(length <= 127) {	298,945✔
53	encoded_length.push_back(static_cast<uint8_t>(length));	216,673✔
54	} else {
55	const size_t bytes_needed = significant_bytes(length);	82,272✔
56
57	encoded_length.push_back(static_cast<uint8_t>(0x80 \| bytes_needed));	82,272✔
58
59	for(size_t i = sizeof(length) - bytes_needed; i < sizeof(length); ++i) {	232,497✔
60	encoded_length.push_back(get_byte_var(i, length));	150,225✔
61	}
62	}
63	}	298,945✔
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) {	121,447✔
72	m_append_output = [&vec](const uint8_t b[], size_t l) { vec.insert(vec.end(), b, b + l); };	364,341✔
73	}	121,447✔
74
75	/*
76	* Push the encoded SEQUENCE/SET to the encoder stream
77	*/
78	void DER_Encoder::DER_Sequence::push_contents(DER_Encoder& der) {	157,879✔
79	const auto real_class_tag = m_class_tag \| ASN1_Class::Constructed;	157,879✔
80
81	if(m_type_tag == ASN1_Type::Set) {	157,879✔
82	std::sort(m_set_contents.begin(), m_set_contents.end());	1,267✔
83	for(const auto& set_elem : m_set_contents) {	2,534✔
84	m_contents += set_elem;	1,267✔
85	}
86	m_set_contents.clear();	1,267✔
87	}
88
89	der.add_object(m_type_tag, real_class_tag, m_contents.data(), m_contents.size());	157,879✔
90	m_contents.clear();	157,879✔
91	}	157,879✔
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) {	103,033✔
97	if(m_type_tag == ASN1_Type::Set) {	103,033✔
98	m_set_contents.push_back(secure_vector<uint8_t>(data, data + length));	308✔
99	} else {
100	m_contents += std::make_pair(data, length);	102,879✔
101	}
102	}	103,033✔
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) {	173,350✔
105	if(m_type_tag == ASN1_Type::Set) {	173,350✔
106	secure_vector<uint8_t> m;	1,113✔
107	m.reserve(hdr_len + val_len);	1,113✔
108	m += std::make_pair(hdr, hdr_len);	1,113✔
109	m += std::make_pair(val, val_len);	1,113✔
110	m_set_contents.push_back(std::move(m));	1,113✔
111	} else {	1,113✔
112	m_contents += std::make_pair(hdr, hdr_len);	172,237✔
113	m_contents += std::make_pair(val, val_len);	172,237✔
114	}
115	}	173,350✔
116
117	/*
118	* Return the type and class taggings
119	*/
120	uint32_t DER_Encoder::DER_Sequence::tag_of() const { return m_type_tag \| m_class_tag; }	×
121
122	/*
123	* DER_Sequence Constructor
124	*/
125	DER_Encoder::DER_Sequence::DER_Sequence(ASN1_Type t1, ASN1_Class t2) : m_type_tag(t1), m_class_tag(t2) {}	157,879✔
126
127	/*
128	* Return the encoded contents
129	*/
130	secure_vector<uint8_t> DER_Encoder::get_contents() {	3,454✔
131	if(!m_subsequences.empty()) {	3,454✔
132	throw Invalid_State("DER_Encoder: Sequence hasn't been marked done");	×
133	}
134
135	if(m_append_output) {	3,454✔
136	throw Invalid_State("DER_Encoder Cannot get contents when using output vector");	×
137	}
138
139	secure_vector<uint8_t> output;	3,454✔
140	std::swap(output, m_default_outbuf);	3,454✔
141	return output;	3,454✔
142	}
143
144	std::vector<uint8_t> DER_Encoder::get_contents_unlocked() {	×
145	if(!m_subsequences.empty()) {	×
146	throw Invalid_State("DER_Encoder: Sequence hasn't been marked done");	×
147	}
148
149	if(m_append_output) {	×
150	throw Invalid_State("DER_Encoder Cannot get contents when using output vector");	×
151	}
152
153	std::vector<uint8_t> output(m_default_outbuf.begin(), m_default_outbuf.end());	×
154	m_default_outbuf.clear();	×
155	return output;	×
156	}
157
158	/*
159	* Start a new ASN.1 SEQUENCE/SET/EXPLICIT
160	*/
161	DER_Encoder& DER_Encoder::start_cons(ASN1_Type type_tag, ASN1_Class class_tag) {	157,879✔
162	m_subsequences.push_back(DER_Sequence(type_tag, class_tag));	157,879✔
163	return (*this);	157,879✔
164	}
165
166	/*
167	* Finish the current ASN.1 SEQUENCE/SET/EXPLICIT
168	*/
169	DER_Encoder& DER_Encoder::end_cons() {	157,879✔
170	if(m_subsequences.empty()) {	157,879✔
171	throw Invalid_State("DER_Encoder::end_cons: No such sequence");	×
172	}
173
174	DER_Sequence last_seq = std::move(m_subsequences[m_subsequences.size() - 1]);	157,879✔
175	m_subsequences.pop_back();	157,879✔
176	last_seq.push_contents(*this);	157,879✔
177
178	return (*this);	157,879✔
179	}	157,879✔
180
181	/*
182	* Start a new ASN.1 EXPLICIT encoding
183	*/
184	DER_Encoder& DER_Encoder::start_explicit(uint16_t type_no) {	713✔
185	ASN1_Type type_tag = static_cast<ASN1_Type>(type_no);	713✔
186
187	// This would confuse DER_Sequence
188	if(type_tag == ASN1_Type::Set) {	713✔
189	throw Internal_Error("DER_Encoder.start_explicit(SET) not supported");	×
190	}
191
192	return start_cons(type_tag, ASN1_Class::ContextSpecific);	713✔
193	}
194
195	/*
196	* Finish the current ASN.1 EXPLICIT encoding
197	*/
198	DER_Encoder& DER_Encoder::end_explicit() { return end_cons(); }	713✔
199
200	/*
201	* Write raw bytes into the stream
202	*/
203	DER_Encoder& DER_Encoder::raw_bytes(const uint8_t bytes[], size_t length) {	103,033✔
204	if(!m_subsequences.empty()) {	103,033✔
205	m_subsequences[m_subsequences.size() - 1].add_bytes(bytes, length);	103,033✔
206	} else if(m_append_output) {	×
207	m_append_output(bytes, length);	×
208	} else {
209	m_default_outbuf += std::make_pair(bytes, length);	×
210	}
211
212	return (*this);	103,033✔
213	}
214
215	/*
216	* Write the encoding of the byte(s)
217	*/
218	DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, const uint8_t rep[], size_t length) {	298,945✔
219	std::vector<uint8_t> hdr;	298,945✔
220	encode_tag(hdr, type_tag, class_tag);	298,945✔
221	encode_length(hdr, length);	298,945✔
222
223	if(!m_subsequences.empty()) {	298,945✔
224	m_subsequences[m_subsequences.size() - 1].add_bytes(hdr.data(), hdr.size(), rep, length);	173,350✔
225	} else if(m_append_output) {	125,595✔
226	m_append_output(hdr.data(), hdr.size());	121,447✔
227	m_append_output(rep, length);	242,894✔
228	} else {
229	m_default_outbuf += hdr;	4,148✔
230	m_default_outbuf += std::make_pair(rep, length);	4,148✔
231	}
232
233	return (*this);	298,945✔
234	}	298,945✔
235
236	/*
237	* Encode a NULL object
238	*/
239	DER_Encoder& DER_Encoder::encode_null() { return add_object(ASN1_Type::Null, ASN1_Class::Universal, nullptr, 0); }	×
240
241	/*
242	* DER encode a BOOLEAN
243	*/
244	DER_Encoder& DER_Encoder::encode(bool is_true) { return encode(is_true, ASN1_Type::Boolean, ASN1_Class::Universal); }	4,185✔
245
246	/*
247	* DER encode a small INTEGER
248	*/
249	DER_Encoder& DER_Encoder::encode(size_t n) {	22,485✔
250	return encode(BigInt::from_u64(n), ASN1_Type::Integer, ASN1_Class::Universal);	39,511✔
251	}
252
253	/*
254	* DER encode a small INTEGER
255	*/
256	DER_Encoder& DER_Encoder::encode(const BigInt& n) { return encode(n, ASN1_Type::Integer, ASN1_Class::Universal); }	17,968✔
257
258	/*
259	* Encode this object
260	*/
261	DER_Encoder& DER_Encoder::encode(const uint8_t bytes[], size_t length, ASN1_Type real_type) {	29,115✔
262	return encode(bytes, length, real_type, real_type, ASN1_Class::Universal);	29,115✔
263	}
264
265	/*
266	* DER encode a BOOLEAN
267	*/
268	DER_Encoder& DER_Encoder::encode(bool is_true, ASN1_Type type_tag, ASN1_Class class_tag) {	4,185✔
269	uint8_t val = is_true ? 0xFF : 0x00;	4,185✔
270	return add_object(type_tag, class_tag, &val, 1);	4,185✔
271	}
272
273	/*
274	* DER encode a small INTEGER
275	*/
276	DER_Encoder& DER_Encoder::encode(size_t n, ASN1_Type type_tag, ASN1_Class class_tag) {	23✔
277	return encode(BigInt::from_u64(n), type_tag, class_tag);	46✔
278	}
279
280	/*
281	* DER encode an INTEGER
282	*/
283	DER_Encoder& DER_Encoder::encode(const BigInt& n, ASN1_Type type_tag, ASN1_Class class_tag) {	40,476✔
284	if(n == 0) {	40,476✔
285	return add_object(type_tag, class_tag, 0);	5,839✔
286	}
287
288	const size_t extra_zero = (n.bits() % 8 == 0) ? 1 : 0;	34,637✔
289	secure_vector<uint8_t> contents(extra_zero + n.bytes());	34,637✔
290	n.binary_encode(&contents[extra_zero]);	34,637✔
291	if(n < 0) {	34,637✔
292	for(unsigned char& content : contents) {	×
293	content = ~content;	×
294	}
295	for(size_t i = contents.size(); i > 0; --i) {	×
296	if(++contents[i - 1]) {	×
297	break;
298	}
299	}
300	}
301
302	return add_object(type_tag, class_tag, contents);	34,637✔
303	}	40,476✔
304
305	/*
306	* DER encode an OCTET STRING or BIT STRING
307	*/
308	DER_Encoder& DER_Encoder::encode(	29,411✔
309	const uint8_t bytes[], size_t length, ASN1_Type real_type, ASN1_Type type_tag, ASN1_Class class_tag) {
310	if(real_type != ASN1_Type::OctetString && real_type != ASN1_Type::BitString) {	29,411✔
311	throw Invalid_Argument("DER_Encoder: Invalid tag for byte/bit string");	×
312	}
313
314	if(real_type == ASN1_Type::BitString) {	29,411✔
315	secure_vector<uint8_t> encoded;	18,435✔
316	encoded.push_back(0);	18,435✔
317	encoded += std::make_pair(bytes, length);	18,435✔
318	return add_object(type_tag, class_tag, encoded);	18,435✔
319	} else {	18,435✔
320	return add_object(type_tag, class_tag, bytes, length);	10,976✔
321	}
322	}
323
324	DER_Encoder& DER_Encoder::encode(const ASN1_Object& obj) {	69,507✔
325	obj.encode_into(*this);	69,507✔
326	return (*this);	69,507✔
327	}
328
329	/*
330	* Write the encoding of the byte(s)
331	*/
332	DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, std::string_view rep_str) {	4,459✔
333	const uint8_t* rep = cast_char_ptr_to_uint8(rep_str.data());	4,459✔
334	const size_t rep_len = rep_str.size();	4,459✔
335	return add_object(type_tag, class_tag, rep, rep_len);	4,459✔
336	}
337
338	/*
339	* Write the encoding of the byte
340	*/
341	DER_Encoder& DER_Encoder::add_object(ASN1_Type type_tag, ASN1_Class class_tag, uint8_t rep) {	5,839✔
342	return add_object(type_tag, class_tag, &rep, 1);	5,839✔
343	}
344
345	} // namespace Botan

randombit / botan / 5124576186

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