17127113192

Committed 21 Aug 2025 03:48AM UTC coverage: 90.666% (+0.01%) from 90.652%

Build # 17127113192

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Commit Message

Merge pull request #5061 from reneme/feature/ascon_hash256

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95.45

/src/lib/asn1/asn1_obj.cpp

/*
* ASN.1 Internals
* (C) 1999-2007,2018 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/asn1_obj.h>

#include <botan/data_src.h>
#include <botan/der_enc.h>
#include <botan/internal/fmt.h>
#include <botan/internal/mem_utils.h>
#include <botan/internal/stl_util.h>
#include <sstream>

namespace Botan {

std::vector<uint8_t> ASN1_Object::BER_encode() const {
   std::vector<uint8_t> output;
   DER_Encoder der(output);
   this->encode_into(der);
   return output;
}

/*
* Check a type invariant on BER data
*/
void BER_Object::assert_is_a(ASN1_Type expected_type_tag, ASN1_Class expected_class_tag, std::string_view descr) const {
   if(!this->is_a(expected_type_tag, expected_class_tag)) {
      std::stringstream msg;

      msg << "Tag mismatch when decoding " << descr << " got ";

      if(m_class_tag == ASN1_Class::NoObject && m_type_tag == ASN1_Type::NoObject) {
         msg << "EOF";
      } else {
         if(m_class_tag == ASN1_Class::Universal || m_class_tag == ASN1_Class::Constructed) {
            msg << asn1_tag_to_string(m_type_tag);
         } else {
            msg << std::to_string(static_cast<uint32_t>(m_type_tag));
         }

         msg << "/" << asn1_class_to_string(m_class_tag);
      }

      msg << " expected ";

      if(expected_class_tag == ASN1_Class::Universal || expected_class_tag == ASN1_Class::Constructed) {
         msg << asn1_tag_to_string(expected_type_tag);
      } else {
         msg << std::to_string(static_cast<uint32_t>(expected_type_tag));
      }

      msg << "/" << asn1_class_to_string(expected_class_tag);

      throw BER_Decoding_Error(msg.str());
   }
}

bool BER_Object::is_a(ASN1_Type expected_type_tag, ASN1_Class expected_class_tag) const {
   return (m_type_tag == expected_type_tag && m_class_tag == expected_class_tag);
}

bool BER_Object::is_a(int expected_type_tag, ASN1_Class expected_class_tag) const {
   return is_a(ASN1_Type(expected_type_tag), expected_class_tag);
}

void BER_Object::set_tagging(ASN1_Type type_tag, ASN1_Class class_tag) {
   m_type_tag = type_tag;
   m_class_tag = class_tag;
}

std::string asn1_class_to_string(ASN1_Class type) {
   switch(type) {
      case ASN1_Class::Universal:
         return "UNIVERSAL";
      case ASN1_Class::Constructed:
         return "CONSTRUCTED";
      case ASN1_Class::ContextSpecific:
         return "CONTEXT_SPECIFIC";
      case ASN1_Class::Application:
         return "APPLICATION";
      case ASN1_Class::Private:
         return "PRIVATE";
      case ASN1_Class::NoObject:
         return "NO_OBJECT";
      default:
         return "CLASS(" + std::to_string(static_cast<size_t>(type)) + ")";
   }
}

std::string asn1_tag_to_string(ASN1_Type type) {
   switch(type) {
      case ASN1_Type::Sequence:
         return "SEQUENCE";

      case ASN1_Type::Set:
         return "SET";

      case ASN1_Type::PrintableString:
         return "PRINTABLE STRING";

      case ASN1_Type::NumericString:
         return "NUMERIC STRING";

      case ASN1_Type::Ia5String:
         return "IA5 STRING";

      case ASN1_Type::TeletexString:
         return "T61 STRING";

      case ASN1_Type::Utf8String:
         return "UTF8 STRING";

      case ASN1_Type::VisibleString:
         return "VISIBLE STRING";

      case ASN1_Type::BmpString:
         return "BMP STRING";

      case ASN1_Type::UniversalString:
         return "UNIVERSAL STRING";

      case ASN1_Type::UtcTime:
         return "UTC TIME";

      case ASN1_Type::GeneralizedTime:
         return "GENERALIZED TIME";

      case ASN1_Type::OctetString:
         return "OCTET STRING";

      case ASN1_Type::BitString:
         return "BIT STRING";

      case ASN1_Type::Enumerated:
         return "ENUMERATED";

      case ASN1_Type::Integer:
         return "INTEGER";

      case ASN1_Type::Null:
         return "NULL";

      case ASN1_Type::ObjectId:
         return "OBJECT";

      case ASN1_Type::Boolean:
         return "BOOLEAN";

      case ASN1_Type::NoObject:
         return "NO_OBJECT";

      default:
         return "TAG(" + std::to_string(static_cast<uint32_t>(type)) + ")";
   }
}

/*
* BER Decoding Exceptions
*/
BER_Decoding_Error::BER_Decoding_Error(std::string_view err) : Decoding_Error(fmt("BER: {}", err)) {}

BER_Bad_Tag::BER_Bad_Tag(std::string_view str, uint32_t tagging) : BER_Decoding_Error(fmt("{}: {}", str, tagging)) {}

namespace ASN1 {

/*
* Put some arbitrary bytes into a SEQUENCE
*/
std::vector<uint8_t> put_in_sequence(const std::vector<uint8_t>& contents) {
   return ASN1::put_in_sequence(contents.data(), contents.size());
}

std::vector<uint8_t> put_in_sequence(const uint8_t bits[], size_t len) {
   std::vector<uint8_t> output;
   DER_Encoder(output).start_sequence().raw_bytes(bits, len).end_cons();
   return output;
}

/*
* Convert a BER object into a string object
*/
std::string to_string(const BER_Object& obj) {
   return bytes_to_string(obj.data());
}

/*
* Do heuristic tests for BER data
*/
bool maybe_BER(DataSource& source) {
   uint8_t first_u8 = 0;
   if(source.peek_byte(first_u8) == 0) {
      BOTAN_ASSERT_EQUAL(source.read_byte(first_u8), 0, "Expected EOF");
      throw Stream_IO_Error("ASN1::maybe_BER: Source was empty");
   }

   const auto cons_seq = static_cast<uint8_t>(ASN1_Class::Constructed) | static_cast<uint8_t>(ASN1_Type::Sequence);
   return first_u8 == cons_seq;
}

}  // namespace ASN1

}  // namespace Botan

1	/*
2	* ASN.1 Internals
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/asn1_obj.h>
9
10	#include <botan/data_src.h>
11	#include <botan/der_enc.h>
12	#include <botan/internal/fmt.h>
13	#include <botan/internal/mem_utils.h>
14	#include <botan/internal/stl_util.h>
15	#include <sstream>
16
17	namespace Botan {
18
19	std::vector<uint8_t> ASN1_Object::BER_encode() const {	28,057✔
20	std::vector<uint8_t> output;	28,057✔
21	DER_Encoder der(output);	28,057✔
22	this->encode_into(der);	28,057✔
23	return output;	28,057✔
24	}	28,057✔
25
26	/*
27	* Check a type invariant on BER data
28	*/
29	void BER_Object::assert_is_a(ASN1_Type expected_type_tag, ASN1_Class expected_class_tag, std::string_view descr) const {	1,279,334✔
30	if(!this->is_a(expected_type_tag, expected_class_tag)) {	1,279,334✔
31	std::stringstream msg;	3,584✔
32
33	msg << "Tag mismatch when decoding " << descr << " got ";	3,584✔
34
35	if(m_class_tag == ASN1_Class::NoObject && m_type_tag == ASN1_Type::NoObject) {	3,584✔
36	msg << "EOF";	1,089✔
37	} else {
38	if(m_class_tag == ASN1_Class::Universal \|\| m_class_tag == ASN1_Class::Constructed) {	2,495✔
39	msg << asn1_tag_to_string(m_type_tag);	3,810✔
40	} else {
41	msg << std::to_string(static_cast<uint32_t>(m_type_tag));	590✔
42	}
43
44	msg << "/" << asn1_class_to_string(m_class_tag);	4,990✔
45	}
46
47	msg << " expected ";	3,584✔
48
49	if(expected_class_tag == ASN1_Class::Universal \|\| expected_class_tag == ASN1_Class::Constructed) {	3,584✔
50	msg << asn1_tag_to_string(expected_type_tag);	7,076✔
51	} else {
52	msg << std::to_string(static_cast<uint32_t>(expected_type_tag));	46✔
53	}
54
55	msg << "/" << asn1_class_to_string(expected_class_tag);	7,168✔
56
57	throw BER_Decoding_Error(msg.str());	7,168✔
58	}	3,584✔
59	}	1,275,750✔
60
61	bool BER_Object::is_a(ASN1_Type expected_type_tag, ASN1_Class expected_class_tag) const {	1,619,957✔
62	return (m_type_tag == expected_type_tag && m_class_tag == expected_class_tag);	1,619,957✔
63	}
64
65	bool BER_Object::is_a(int expected_type_tag, ASN1_Class expected_class_tag) const {	121,794✔
66	return is_a(ASN1_Type(expected_type_tag), expected_class_tag);	121,794✔
67	}
68
69	void BER_Object::set_tagging(ASN1_Type type_tag, ASN1_Class class_tag) {	7,150,898✔
70	m_type_tag = type_tag;	7,150,898✔
71	m_class_tag = class_tag;	7,150,898✔
72	}	7,150,898✔
73
74	std::string asn1_class_to_string(ASN1_Class type) {	6,079✔
75	switch(type) {	6,079✔
76	case ASN1_Class::Universal:	2,606✔
77	return "UNIVERSAL";	2,606✔
78	case ASN1_Class::Constructed:	2,837✔
79	return "CONSTRUCTED";	2,837✔
80	case ASN1_Class::ContextSpecific:	127✔
81	return "CONTEXT_SPECIFIC";	127✔
82	case ASN1_Class::Application:	73✔
83	return "APPLICATION";	73✔
84	case ASN1_Class::Private:	43✔
85	return "PRIVATE";	43✔
86	case ASN1_Class::NoObject:	×
87	return "NO_OBJECT";	×
88	default:	393✔
89	return "CLASS(" + std::to_string(static_cast<size_t>(type)) + ")";	1,179✔
90	}
91	}
92
93	std::string asn1_tag_to_string(ASN1_Type type) {	6,271✔
94	switch(type) {	6,271✔
95	case ASN1_Type::Sequence:	2,339✔
96	return "SEQUENCE";	2,339✔
97
98	case ASN1_Type::Set:	457✔
99	return "SET";	457✔
100
101	case ASN1_Type::PrintableString:	62✔
102	return "PRINTABLE STRING";	62✔
103
104	case ASN1_Type::NumericString:	21✔
105	return "NUMERIC STRING";	21✔
106
107	case ASN1_Type::Ia5String:	16✔
108	return "IA5 STRING";	16✔
109
110	case ASN1_Type::TeletexString:	9✔
111	return "T61 STRING";	9✔
112
113	case ASN1_Type::Utf8String:	67✔
114	return "UTF8 STRING";	67✔
115
116	case ASN1_Type::VisibleString:	10✔
117	return "VISIBLE STRING";	10✔
118
119	case ASN1_Type::BmpString:	2✔
120	return "BMP STRING";	2✔
121
122	case ASN1_Type::UniversalString:	×
123	return "UNIVERSAL STRING";	×
124
125	case ASN1_Type::UtcTime:	143✔
126	return "UTC TIME";	143✔
127
128	case ASN1_Type::GeneralizedTime:	24✔
129	return "GENERALIZED TIME";	24✔
130
131	case ASN1_Type::OctetString:	339✔
132	return "OCTET STRING";	339✔
133
134	case ASN1_Type::BitString:	197✔
135	return "BIT STRING";	197✔
136
137	case ASN1_Type::Enumerated:	51✔
138	return "ENUMERATED";	51✔
139
140	case ASN1_Type::Integer:	1,650✔
141	return "INTEGER";	1,650✔
142
143	case ASN1_Type::Null:	130✔
144	return "NULL";	130✔
145
146	case ASN1_Type::ObjectId:	187✔
147	return "OBJECT";	187✔
148
149	case ASN1_Type::Boolean:	92✔
150	return "BOOLEAN";	92✔
151
152	case ASN1_Type::NoObject:	1✔
153	return "NO_OBJECT";	1✔
154
155	default:	474✔
156	return "TAG(" + std::to_string(static_cast<uint32_t>(type)) + ")";	1,422✔
157	}
158	}
159
160	/*
161	* BER Decoding Exceptions
162	*/
163	BER_Decoding_Error::BER_Decoding_Error(std::string_view err) : Decoding_Error(fmt("BER: {}", err)) {}	23,660✔
164
165	BER_Bad_Tag::BER_Bad_Tag(std::string_view str, uint32_t tagging) : BER_Decoding_Error(fmt("{}: {}", str, tagging)) {}	4,000✔
166
167	namespace ASN1 {
168
169	/*
170	* Put some arbitrary bytes into a SEQUENCE
171	*/
172	std::vector<uint8_t> put_in_sequence(const std::vector<uint8_t>& contents) {	81,448✔
173	return ASN1::put_in_sequence(contents.data(), contents.size());	81,448✔
174	}
175
176	std::vector<uint8_t> put_in_sequence(const uint8_t bits[], size_t len) {	83,032✔
177	std::vector<uint8_t> output;	83,032✔
178	DER_Encoder(output).start_sequence().raw_bytes(bits, len).end_cons();	166,064✔
179	return output;	83,032✔
180	}	×
181
182	/*
183	* Convert a BER object into a string object
184	*/
185	std::string to_string(const BER_Object& obj) {	239,832✔
186	return bytes_to_string(obj.data());	239,832✔
187	}
188
189	/*
190	* Do heuristic tests for BER data
191	*/
192	bool maybe_BER(DataSource& source) {	59,094✔
193	uint8_t first_u8 = 0;	59,094✔
194	if(source.peek_byte(first_u8) == 0) {	59,094✔
195	BOTAN_ASSERT_EQUAL(source.read_byte(first_u8), 0, "Expected EOF");	205✔
196	throw Stream_IO_Error("ASN1::maybe_BER: Source was empty");	205✔
197	}
198
199	const auto cons_seq = static_cast<uint8_t>(ASN1_Class::Constructed) \| static_cast<uint8_t>(ASN1_Type::Sequence);	58,889✔
200	return first_u8 == cons_seq;	58,889✔
201	}
202
203	} // namespace ASN1
204
205	} // namespace Botan

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