/* * X.509 Certificates * (C) 1999-2007,2015 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #ifndef BOTAN_X509_CERTS_H__ #define BOTAN_X509_CERTS_H__ #include #include #include #include #include #include #include #include #include #include namespace Botan { enum class Usage_Type { UNSPECIFIED, // no restrictions TLS_SERVER_AUTH, TLS_CLIENT_AUTH, CERTIFICATE_AUTHORITY, OCSP_RESPONDER }; /** * This class represents X.509 Certificate */ class BOTAN_DLL X509_Certificate : public X509_Object { public: /** * Get the public key associated with this certificate. * @return subject public key of this certificate */ Public_Key* subject_public_key() const; /** * Get the public key associated with this certificate. * @return subject public key of this certificate */ std::vector subject_public_key_bits() const; /** * Get the bit string of the public key associated with this certificate * @return subject public key of this certificate */ std::vector subject_public_key_bitstring() const; /** * Get the SHA-1 bit string of the public key associated with this certificate. * This is used for OCSP among other protocols * @return hash of subject public key of this certificate */ std::vector subject_public_key_bitstring_sha1() const; /** * Get the certificate's issuer distinguished name (DN). * @return issuer DN of this certificate */ X509_DN issuer_dn() const; /** * Get the certificate's subject distinguished name (DN). * @return subject DN of this certificate */ X509_DN subject_dn() const; /** * Get a value for a specific subject_info parameter name. * @param name the name of the parameter to look up. Possible names are * "X509.Certificate.version", "X509.Certificate.serial", * "X509.Certificate.start", "X509.Certificate.end", * "X509.Certificate.v2.key_id", "X509.Certificate.public_key", * "X509v3.BasicConstraints.path_constraint", * "X509v3.BasicConstraints.is_ca", "X509v3.NameConstraints", * "X509v3.ExtendedKeyUsage", "X509v3.CertificatePolicies", * "X509v3.SubjectKeyIdentifier" or "X509.Certificate.serial". * @return value(s) of the specified parameter */ std::vector subject_info(const std::string& name) const; /** * Get a value for a specific subject_info parameter name. * @param name the name of the parameter to look up. Possible names are * "X509.Certificate.v2.key_id" or "X509v3.AuthorityKeyIdentifier". * @return value(s) of the specified parameter */ std::vector issuer_info(const std::string& name) const; /** * Raw subject DN */ std::vector raw_issuer_dn() const; /** * Raw issuer DN */ std::vector raw_subject_dn() const; /** * Get the notBefore of the certificate. * @return notBefore of the certificate */ std::string start_time() const; /** * Get the notAfter of the certificate. * @return notAfter of the certificate */ std::string end_time() const; /** * Get the X509 version of this certificate object. * @return X509 version */ u32bit x509_version() const; /** * Get the serial number of this certificate. * @return certificates serial number */ std::vector serial_number() const; /** * Get the DER encoded AuthorityKeyIdentifier of this certificate. * @return DER encoded AuthorityKeyIdentifier */ std::vector authority_key_id() const; /** * Get the DER encoded SubjectKeyIdentifier of this certificate. * @return DER encoded SubjectKeyIdentifier */ std::vector subject_key_id() const; /** * Check whether this certificate is self signed. * @return true if this certificate is self signed */ bool is_self_signed() const { return m_self_signed; } /** * Check whether this certificate is a CA certificate. * @return true if this certificate is a CA certificate */ bool is_CA_cert() const; /** * Returns true if the specified @param usage is set in the key usage extension * or if no key usage constraints are set at all. * To check if a certain key constraint is set in the certificate * use @see X509_Certificate#has_constraints. */ bool allowed_usage(Key_Constraints usage) const; /** * Returns true if the specified @param usage is set in the extended key usage extension * or if no extended key usage constraints are set at all. * To check if a certain extended key constraint is set in the certificate * use @see X509_Certificate#has_ex_constraint. */ bool allowed_extended_usage(const std::string& usage) const; /** * Returns true if the required key and extended key constraints are set in the certificate * for the specified @param usage or if no key constraints are set in both the key usage * and extended key usage extension. */ bool allowed_usage(Usage_Type usage) const; /// Returns true if the specified @param constraints are included in the key usage extension. bool has_constraints(Key_Constraints constraints) const; /** * Returns true if and only if @param ex_constraint (referring to an extended key * constraint, eg "PKIX.ServerAuth") is included in the extended * key extension. */ bool has_ex_constraint(const std::string& ex_constraint) const; /** * Get the path limit as defined in the BasicConstraints extension of * this certificate. * @return path limit */ u32bit path_limit() const; /** * Check whenever a given X509 Extension is marked critical in this * certificate. */ bool is_critical(const std::string& ex_name) const; /** * Get the key constraints as defined in the KeyUsage extension of this * certificate. * @return key constraints */ Key_Constraints constraints() const; /** * Get the key constraints as defined in the ExtendedKeyUsage * extension of this certificate. * @return key constraints */ std::vector ex_constraints() const; /** * Get the name constraints as defined in the NameConstraints * extension of this certificate. * @return name constraints */ NameConstraints name_constraints() const; /** * Get the policies as defined in the CertificatePolicies extension * of this certificate. * @return certificate policies */ std::vector policies() const; /** * Get all extensions of this certificate. * @return certificate extensions */ Extensions v3_extensions() const; /** * Return the listed address of an OCSP responder, or empty if not set */ std::string ocsp_responder() const; /** * Return the CRL distribution point, or empty if not set */ std::string crl_distribution_point() const; /** * @return a string describing the certificate */ std::string to_string() const; /** * @return a fingerprint of the certificate * @param hash_name hash function used to calculate the fingerprint */ std::string fingerprint(const std::string& hash_name = "SHA-1") const; /** * Check if a certain DNS name matches up with the information in * the cert * @param name DNS name to match */ bool matches_dns_name(const std::string& name) const; /** * Check to certificates for equality. * @return true both certificates are (binary) equal */ bool operator==(const X509_Certificate& other) const; /** * Impose an arbitrary (but consistent) ordering * @return true if this is less than other by some unspecified criteria */ bool operator<(const X509_Certificate& other) const; /** * Create a certificate from a data source providing the DER or * PEM encoded certificate. * @param source the data source */ explicit X509_Certificate(DataSource& source); #if defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) /** * Create a certificate from a file containing the DER or PEM * encoded certificate. * @param filename the name of the certificate file */ explicit X509_Certificate(const std::string& filename); #endif /** * Create a certificate from a buffer * @param in the buffer containing the DER-encoded certificate */ explicit X509_Certificate(const std::vector& in); X509_Certificate(const X509_Certificate& other) = default; X509_Certificate& operator=(const X509_Certificate& other) = default; private: void force_decode() override; friend class X509_CA; friend class BER_Decoder; X509_Certificate() {} Data_Store m_subject, m_issuer; bool m_self_signed; Extensions m_v3_extensions; }; /** * Check two certificates for inequality * @param cert1 The first certificate * @param cert2 The second certificate * @return true if the arguments represent different certificates, * false if they are binary identical */ BOTAN_DLL bool operator!=(const X509_Certificate& cert1, const X509_Certificate& cert2); /* * Data Store Extraction Operations */ /* * Create and populate a X509_DN * @param info data store containing DN information * @return DN containing attributes from data store */ BOTAN_DLL X509_DN create_dn(const Data_Store& info); /* * Create and populate an AlternativeName * @param info data store containing AlternativeName information * @return AlternativeName containing attributes from data store */ BOTAN_DLL AlternativeName create_alt_name(const Data_Store& info); } #endif