Botan 3.0.0
Crypto and TLS for C&
Functions
Botan::ASN1 Namespace Reference

Functions

bool maybe_BER (DataSource &source)
 
std::vector< uint8_t > put_in_sequence (const std::vector< uint8_t > &contents)
 
std::vector< uint8_t > put_in_sequence (const uint8_t bits[], size_t len)
 
std::string to_string (const BER_Object &obj)
 

Function Documentation

◆ maybe_BER()

bool Botan::ASN1::maybe_BER ( DataSource src)

Heuristics tests; is this object possibly BER?

Parameters
srca data source that will be peeked at but not modified

Definition at line 219 of file asn1_obj.cpp.

220 {
221 uint8_t first_u8;
222 if(!source.peek_byte(first_u8))
223 {
224 BOTAN_ASSERT_EQUAL(source.read_byte(first_u8), 0, "Expected EOF");
225 throw Stream_IO_Error("ASN1::maybe_BER: Source was empty");
226 }
227
228 const auto cons_seq = static_cast<uint8_t>(ASN1_Class::Constructed) | static_cast<uint8_t>(ASN1_Type::Sequence);
229 if(first_u8 == cons_seq)
230 return true;
231 return false;
232 }
#define BOTAN_ASSERT_EQUAL(expr1, expr2, assertion_made)
Definition: assert.h:80

References BOTAN_ASSERT_EQUAL, Botan::Constructed, Botan::DataSource::peek_byte(), Botan::DataSource::read_byte(), and Botan::Sequence.

Referenced by Botan::X509_Object::load_data(), and Botan::X509::load_key().

◆ put_in_sequence() [1/2]

std::vector< uint8_t > Botan::ASN1::put_in_sequence ( const std::vector< uint8_t > &  contents)

Definition at line 192 of file asn1_obj.cpp.

193 {
194 return ASN1::put_in_sequence(contents.data(), contents.size());
195 }

References put_in_sequence().

Referenced by put_in_sequence(), Botan::X509_Object::tbs_data(), and Botan::OCSP::Response::verify_signature().

◆ put_in_sequence() [2/2]

std::vector< uint8_t > Botan::ASN1::put_in_sequence ( const uint8_t  bits[],
size_t  len 
)

Definition at line 197 of file asn1_obj.cpp.

198 {
199 std::vector<uint8_t> output;
200 DER_Encoder(output)
202 .raw_bytes(bits, len)
203 .end_cons();
204 return output;
205 }
DER_Encoder & start_sequence()
Definition: der_enc.h:66
DER_Encoder & raw_bytes(const uint8_t val[], size_t len)
Definition: der_enc.cpp:233
DER_Encoder & end_cons()
Definition: der_enc.cpp:196

References Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::raw_bytes(), and Botan::DER_Encoder::start_sequence().

◆ to_string()

std::string Botan::ASN1::to_string ( const BER_Object obj)

Definition at line 210 of file asn1_obj.cpp.

211 {
212 return std::string(cast_uint8_ptr_to_char(obj.bits()),
213 obj.length());
214 }
size_t length() const
Definition: asn1_obj.h:157
const uint8_t * bits() const
Definition: asn1_obj.h:155
const char * cast_uint8_ptr_to_char(const uint8_t *b)
Definition: mem_ops.h:188

References Botan::BER_Object::bits(), Botan::cast_uint8_ptr_to_char(), and Botan::BER_Object::length().

Referenced by Botan::ASN1_Time::decode_from(), Botan::ASN1_String::decode_from(), Botan::AlternativeName::decode_from(), and Botan::GeneralName::decode_from().