#include <x509_crl.h>

Inheritance diagram for Botan::X509_CRL:

Public Member Functions
const std::vector< uint8_t > &	authority_key_id () const

std::vector< uint8_t >	BER_encode () const

bool	check_signature (const Public_Key &key) const

std::string	crl_issuing_distribution_point () const

uint32_t	crl_number () const

void	decode_from (BER_Decoder &from) override

void	encode_into (DER_Encoder &to) const override

const Extensions &	extensions () const

const std::vector< CRL_Entry > &	get_revoked () const

bool	is_revoked (const X509_Certificate &cert) const

const X509_DN &	issuer_dn () const

const X509_Time &	next_update () const

std::string	PEM_encode () const

const std::vector< uint8_t > &	signature () const

const AlgorithmIdentifier &	signature_algorithm () const

const std::vector< uint8_t > &	signed_body () const

std::vector< uint8_t >	tbs_data () const

const X509_Time &	this_update () const

std::pair< Certificate_Status_Code, std::string >	verify_signature (const Public_Key &key) const

	X509_CRL ()=default

	X509_CRL (const std::vector< uint8_t > &vec)

	X509_CRL (const X509_DN &issuer, const X509_Time &thisUpdate, const X509_Time &nextUpdate, const std::vector< CRL_Entry > &revoked)

	X509_CRL (DataSource &source)

Static Public Member Functions
static std::unique_ptr< PK_Signer >	choose_sig_format (const Private_Key &key, RandomNumberGenerator &rng, std::string_view hash_fn, std::string_view padding_algo)

static std::vector< uint8_t >	make_signed (PK_Signer &signer, RandomNumberGenerator &rng, const AlgorithmIdentifier &alg_id, const secure_vector< uint8_t > &tbs)

Protected Member Functions
void	load_data (DataSource &src)

Detailed Description

This class represents X.509 Certificate Revocation Lists (CRLs).

Definition at line 89 of file x509_crl.h.

Constructor & Destructor Documentation

◆ X509_CRL() [1/4]

Botan::X509_CRL::X509_CRL ( )

default

Create an uninitialized CRL object. Any attempts to access this object will throw an exception.

◆ X509_CRL() [2/4]

Botan::X509_CRL::X509_CRL ( DataSource & source )

Construct a CRL from a data source.

Parameters

source the data source providing the DER or PEM encoded CRL.

Definition at line 39 of file x509_crl.cpp.

                                  {
   load_data(src);
}

References Botan::X509_Object::load_data().

◆ X509_CRL() [3/4]

Botan::X509_CRL::X509_CRL ( const std::vector< uint8_t > & vec )

Construct a CRL from a binary vector

Parameters

vec	the binary (DER) representation of the CRL

Definition at line 43 of file x509_crl.cpp.

                                                {
   DataSource_Memory src(vec.data(), vec.size());
   load_data(src);
}

References Botan::X509_Object::load_data().

◆ X509_CRL() [4/4]

Botan::X509_CRL::X509_CRL	(	const X509_DN &	issuer,
		const X509_Time &	thisUpdate,
		const X509_Time &	nextUpdate,
		const std::vector< CRL_Entry > &	revoked
	)

Construct a CRL

Parameters

issuer	issuer of this CRL
thisUpdate	valid from
nextUpdate	valid until
revoked	entries to be included in the CRL

Definition at line 55 of file x509_crl.cpp.

                                                        :
      X509_Object() {
   m_data = std::make_shared<CRL_Data>();
   m_data->m_issuer = issuer;
   m_data->m_this_update = this_update;
   m_data->m_next_update = next_update;
   m_data->m_entries = revoked;
}

References next_update(), and this_update().

Member Function Documentation

◆ authority_key_id()

const std::vector< uint8_t > & Botan::X509_CRL::authority_key_id ( ) const

Get the AuthorityKeyIdentifier of this CRL.

Returns: this CRLs AuthorityKeyIdentifier

Definition at line 210 of file x509_crl.cpp.

                                                           {
   return data().m_auth_key_id;
}

Referenced by is_revoked().

◆ BER_encode()

std::vector< uint8_t > Botan::ASN1_Object::BER_encode ( ) const

inherited

Return the encoding of this object. This is a convenience method when just one object needs to be serialized. Use DER_Encoder for complicated encodings.

Definition at line 18 of file asn1_obj.cpp.

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

References Botan::ASN1_Object::encode_into().

Referenced by Botan::PSS_Params::decode_from(), Botan::Certificate_Store_In_SQL::find_all_certs(), Botan::Certificate_Store_In_SQL::find_cert(), Botan::X509_Certificate::fingerprint(), Botan::Certificate_Store_In_SQL::insert_cert(), Botan::X509_Object::PEM_encode(), and Botan::Certificate_Store_In_SQL::revoke_cert().

◆ check_signature()

bool Botan::X509_Object::check_signature ( const Public_Key & key ) const

inherited

Check the signature on this data

Parameters

key	the public key purportedly used to sign this data

Returns: true if the signature is valid, otherwise false

Definition at line 97 of file x509_obj.cpp.

                                                                 {
   const auto result = this->verify_signature(pub_key);
   return (result.first == Certificate_Status_Code::VERIFIED);
}

References Botan::VERIFIED, and Botan::X509_Object::verify_signature().

◆ choose_sig_format()

std::unique_ptr< PK_Signer > Botan::X509_Object::choose_sig_format	(	const Private_Key &	key,
		RandomNumberGenerator &	rng,
		std::string_view	hash_fn,
		std::string_view	padding_algo
	)

staticinherited

Choose and return a signature scheme appropriate for X.509 signing using the provided parameters.

Parameters

key	will be the key to choose a padding scheme for
rng	the random generator to use
hash_fn	is the desired hash function
padding_algo	specifies the padding method

Returns: a PK_Signer object for generating signatures

Definition at line 209 of file x509_obj.cpp.

                                                                                                 {
   const Signature_Format format = key.default_x509_signature_format();
 
   if(!user_specified_padding.empty()) {
      try {
         auto pk_signer = std::make_unique<PK_Signer>(key, rng, user_specified_padding, format);
         if(!hash_fn.empty() && pk_signer->hash_function() != hash_fn) {
            throw Invalid_Argument(format_padding_error_message(
               key.algo_name(), pk_signer->hash_function(), hash_fn, "", user_specified_padding));
         }
         return pk_signer;
      } catch(Lookup_Error&) {}
   }
 
   const std::string padding = x509_signature_padding_for(key.algo_name(), hash_fn, user_specified_padding);
 
   try {
      auto pk_signer = std::make_unique<PK_Signer>(key, rng, padding, format);
      if(!hash_fn.empty() && pk_signer->hash_function() != hash_fn) {
         throw Invalid_Argument(format_padding_error_message(
            key.algo_name(), pk_signer->hash_function(), hash_fn, padding, user_specified_padding));
      }
      return pk_signer;
   } catch(Not_Implemented&) {
      throw Invalid_Argument("Signatures using " + key.algo_name() + "/" + padding + " are not supported");
   }
}

References Botan::Asymmetric_Key::algo_name(), and Botan::Public_Key::default_x509_signature_format().

Referenced by Botan::PKCS10_Request::create(), Botan::X509::create_self_signed_cert(), and Botan::X509_CA::X509_CA().

◆ crl_issuing_distribution_point()

std::string Botan::X509_CRL::crl_issuing_distribution_point ( ) const

Get the CRL's distribution point

Definition at line 238 of file x509_crl.cpp.

                                                         {
   return data().m_issuing_distribution_point;
}

◆ crl_number()

uint32_t Botan::X509_CRL::crl_number ( ) const

Get the serial number of this CRL.

Returns: CRLs serial number

Definition at line 217 of file x509_crl.cpp.

                                    {
   return static_cast<uint32_t>(data().m_crl_number);
}

Referenced by Botan::X509_CA::update_crl().

◆ decode_from()

void Botan::X509_Object::decode_from ( BER_Decoder & from )

overridevirtualinherited

Decode a BER encoded X509_Object See ASN1_Object::decode_from()

Implements Botan::ASN1_Object.

Definition at line 68 of file x509_obj.cpp.

                                               {
   from.start_sequence()
      .start_sequence()
      .raw_bytes(m_tbs_bits)
      .end_cons()
      .decode(m_sig_algo)
      .decode(m_sig, ASN1_Type::BitString)
      .end_cons();
 
   force_decode();
}

References Botan::BitString, Botan::BER_Decoder::decode(), Botan::BER_Decoder::end_cons(), and Botan::BER_Decoder::start_sequence().

Referenced by Botan::X509_Object::load_data().

◆ encode_into()

void Botan::X509_Object::encode_into ( DER_Encoder & to ) const

overridevirtualinherited

DER encode an X509_Object See ASN1_Object::encode_into()

Implements Botan::ASN1_Object.

Definition at line 55 of file x509_obj.cpp.

                                                   {
   to.start_sequence()
      .start_sequence()
      .raw_bytes(signed_body())
      .end_cons()
      .encode(signature_algorithm())
      .encode(signature(), ASN1_Type::BitString)
      .end_cons();
}

References Botan::BitString, Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::raw_bytes(), Botan::X509_Object::signature(), Botan::X509_Object::signature_algorithm(), Botan::X509_Object::signed_body(), and Botan::DER_Encoder::start_sequence().

◆ extensions()

const Extensions & Botan::X509_CRL::extensions ( ) const

Returns: extension data for this CRL

Definition at line 189 of file x509_crl.cpp.

                                             {
   return data().m_extensions;
}

◆ get_revoked()

const std::vector< CRL_Entry > & Botan::X509_CRL::get_revoked ( ) const

Get the entries of this CRL in the form of a vector.

Returns: vector containing the entries of this CRL.

Definition at line 196 of file x509_crl.cpp.

                                                        {
   return data().m_entries;
}

Referenced by is_revoked(), and Botan::X509_CA::update_crl().

◆ is_revoked()

bool Botan::X509_CRL::is_revoked ( const X509_Certificate & cert ) const

Check if this particular certificate is listed in the CRL

Definition at line 70 of file x509_crl.cpp.

                                                            {
   /*
   If the cert wasn't issued by the CRL issuer, it's possible the cert
   is revoked, but not by this CRL. Maybe throw an exception instead?
   */
   if(cert.issuer_dn() != issuer_dn()) {
      return false;
   }
 
   std::vector<uint8_t> crl_akid = authority_key_id();
   const std::vector<uint8_t>& cert_akid = cert.authority_key_id();
 
   if(!crl_akid.empty() && !cert_akid.empty()) {
      if(crl_akid != cert_akid) {
         return false;
      }
   }
 
   const std::vector<uint8_t>& cert_serial = cert.serial_number();
 
   bool is_revoked = false;
 
   // FIXME would be nice to avoid a linear scan here - maybe sort the entries?
   for(const CRL_Entry& entry : get_revoked()) {
      if(cert_serial == entry.serial_number()) {
         if(entry.reason_code() == CRL_Code::RemoveFromCrl) {
            is_revoked = false;
         } else {
            is_revoked = true;
         }
      }
   }
 
   return is_revoked;
}

References authority_key_id(), Botan::X509_Certificate::authority_key_id(), get_revoked(), is_revoked(), issuer_dn(), Botan::X509_Certificate::issuer_dn(), Botan::RemoveFromCrl, and Botan::X509_Certificate::serial_number().

Referenced by is_revoked().

◆ issuer_dn()

const X509_DN & Botan::X509_CRL::issuer_dn ( ) const

Get the issuer DN of this CRL.

Returns: CRLs issuer DN

Definition at line 203 of file x509_crl.cpp.

                                         {
   return data().m_issuer;
}

Referenced by Botan::Certificate_Store_In_Memory::add_crl(), and is_revoked().

◆ load_data()

void Botan::X509_Object::load_data ( DataSource & src )

protectedinherited

Decodes from src as either DER or PEM data, then calls force_decode()

Definition at line 24 of file x509_obj.cpp.

                                          {
   try {
      if(ASN1::maybe_BER(in) && !PEM_Code::matches(in)) {
         BER_Decoder dec(in);
         decode_from(dec);
      } else {
         std::string got_label;
         DataSource_Memory ber(PEM_Code::decode(in, got_label));
 
         if(got_label != PEM_label()) {
            bool is_alternate = false;
            for(std::string_view alt_label : alternate_PEM_labels()) {
               if(got_label == alt_label) {
                  is_alternate = true;
                  break;
               }
            }
 
            if(!is_alternate) {
               throw Decoding_Error("Unexpected PEM label for " + PEM_label() + " of " + got_label);
            }
         }
 
         BER_Decoder dec(ber);
         decode_from(dec);
      }
   } catch(Decoding_Error& e) {
      throw Decoding_Error(PEM_label() + " decoding", e);
   }
}

References Botan::X509_Object::alternate_PEM_labels(), Botan::PEM_Code::decode(), Botan::X509_Object::decode_from(), Botan::PEM_Code::matches(), Botan::ASN1::maybe_BER(), and Botan::X509_Object::PEM_label().

Referenced by Botan::PKCS10_Request::PKCS10_Request(), Botan::X509_Certificate::X509_Certificate(), and X509_CRL().

◆ make_signed()

std::vector< uint8_t > Botan::X509_Object::make_signed	(	PK_Signer &	signer,
		RandomNumberGenerator &	rng,
		const AlgorithmIdentifier &	alg_id,
		const secure_vector< uint8_t > &	tbs
	)

staticinherited

Create a signed X509 object.

Parameters

signer	the signer used to sign the object
rng	the random number generator to use
alg_id	the algorithm identifier of the signature scheme
tbs	the tbs bits to be signed

Returns: signed X509 object

Definition at line 125 of file x509_obj.cpp.

                                                                                      {
   const std::vector<uint8_t> signature = signer.sign_message(tbs_bits, rng);
 
   std::vector<uint8_t> output;
   DER_Encoder(output)
      .start_sequence()
      .raw_bytes(tbs_bits)
      .encode(algo)
      .encode(signature, ASN1_Type::BitString)
      .end_cons();
 
   return output;
}

References Botan::BitString, Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::raw_bytes(), Botan::PK_Signer::sign_message(), Botan::X509_Object::signature(), and Botan::DER_Encoder::start_sequence().

Referenced by Botan::PKCS10_Request::create(), and Botan::X509_CA::make_cert().

◆ next_update()

const X509_Time & Botan::X509_CRL::next_update ( ) const

Get the CRL's nextUpdate value.

Returns: CRLs nextdUpdate

Definition at line 231 of file x509_crl.cpp.

                                             {
   return data().m_next_update;
}

Referenced by X509_CRL().

◆ PEM_encode()

std::string Botan::X509_Object::PEM_encode ( ) const

inherited

Returns: PEM encoding of this

Definition at line 83 of file x509_obj.cpp.

                                        {
   return PEM_Code::encode(BER_encode(), PEM_label());
}

References Botan::ASN1_Object::BER_encode(), Botan::PEM_Code::encode(), and Botan::X509_Object::PEM_label().

◆ signature()

const std::vector< uint8_t > & Botan::X509_Object::signature ( ) const

inlineinherited

Returns: signature on tbs_data()

Definition at line 37 of file x509_obj.h.

37{ return m_sig; }

Referenced by Botan::X509_Object::encode_into(), Botan::X509_Object::make_signed(), Botan::X509_Certificate::operator<(), Botan::X509_Certificate::operator==(), and Botan::X509_Object::verify_signature().

◆ signature_algorithm()

const AlgorithmIdentifier & Botan::X509_Object::signature_algorithm ( ) const

inlineinherited

Returns: signature algorithm that was used to generate signature

Definition at line 47 of file x509_obj.h.

47{ return m_sig_algo; }

Referenced by Botan::PKIX::check_chain(), Botan::X509_Object::encode_into(), Botan::X509_Certificate::operator==(), Botan::X509_Certificate::to_string(), and Botan::X509_Object::verify_signature().

◆ signed_body()

const std::vector< uint8_t > & Botan::X509_Object::signed_body ( ) const

inlineinherited

Returns: signed body

Definition at line 42 of file x509_obj.h.

42{ return m_tbs_bits; }

Referenced by Botan::X509_Object::encode_into(), Botan::X509_Certificate::operator<(), and Botan::X509_Certificate::operator==().

◆ tbs_data()

std::vector< uint8_t > Botan::X509_Object::tbs_data ( ) const

inherited

The underlying data that is to be or was signed

Returns: data that is or was signed

Definition at line 90 of file x509_obj.cpp.

                                               {
   return ASN1::put_in_sequence(m_tbs_bits);
}

References Botan::ASN1::put_in_sequence().

Referenced by Botan::X509_Object::verify_signature().

◆ this_update()

const X509_Time & Botan::X509_CRL::this_update ( ) const

Get the CRL's thisUpdate value.

Returns: CRLs thisUpdate

Definition at line 224 of file x509_crl.cpp.

                                             {
   return data().m_this_update;
}

Referenced by Botan::Certificate_Store_In_Memory::add_crl(), and X509_CRL().

◆ verify_signature()

std::pair< Certificate_Status_Code, std::string > Botan::X509_Object::verify_signature ( const Public_Key & key ) const

inherited

Check the signature on this data

Parameters

key	the public key purportedly used to sign this data

Returns: status of the signature - OK if verified or otherwise an indicator of the problem preventing verification, along with the hash function that was used, for further policy checks. The second parameter is empty unless the validation was sucessful.

Definition at line 102 of file x509_obj.cpp.

                                                                                                         {
   try {
      PK_Verifier verifier(pub_key, signature_algorithm());
      const bool valid = verifier.verify_message(tbs_data(), signature());
 
      if(valid) {
         return std::make_pair(Certificate_Status_Code::VERIFIED, verifier.hash_function());
      } else {
         return std::make_pair(Certificate_Status_Code::SIGNATURE_ERROR, "");
      }
   } catch(Decoding_Error&) {
      return std::make_pair(Certificate_Status_Code::SIGNATURE_ALGO_BAD_PARAMS, "");
   } catch(Algorithm_Not_Found&) {
      return std::make_pair(Certificate_Status_Code::SIGNATURE_ALGO_UNKNOWN, "");
   } catch(...) {
      // This shouldn't happen, fallback to generic signature error
      return std::make_pair(Certificate_Status_Code::SIGNATURE_ERROR, "");
   }
}

References Botan::PK_Verifier::hash_function(), Botan::X509_Object::signature(), Botan::SIGNATURE_ALGO_BAD_PARAMS, Botan::SIGNATURE_ALGO_UNKNOWN, Botan::X509_Object::signature_algorithm(), Botan::SIGNATURE_ERROR, Botan::X509_Object::tbs_data(), Botan::VERIFIED, and Botan::PK_Verifier::verify_message().

Referenced by Botan::PKIX::check_chain(), and Botan::X509_Object::check_signature().

The documentation for this class was generated from the following files:

src/lib/x509/x509_crl.h
src/lib/x509/x509_crl.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ X509_CRL() [1/4]

◆ X509_CRL() [2/4]

◆ X509_CRL() [3/4]

◆ X509_CRL() [4/4]

Member Function Documentation

◆ authority_key_id()

◆ BER_encode()

◆ check_signature()

◆ choose_sig_format()

◆ crl_issuing_distribution_point()

◆ crl_number()

◆ decode_from()

◆ encode_into()

◆ extensions()

◆ get_revoked()

◆ is_revoked()

◆ issuer_dn()

◆ load_data()

◆ make_signed()

◆ next_update()

◆ PEM_encode()

◆ signature()

◆ signature_algorithm()

◆ signed_body()

◆ tbs_data()

◆ this_update()

◆ verify_signature()