Botan 2.19.1
Crypto and TLS for C&
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#include <tls_policy.h>
Public Member Functions | |
virtual bool | abort_connection_on_undesired_renegotiation () const |
virtual bool | acceptable_ciphersuite (const Ciphersuite &suite) const |
virtual bool | acceptable_protocol_version (Protocol_Version version) const |
virtual bool | allow_client_initiated_renegotiation () const |
bool | allow_dtls10 () const override |
bool | allow_dtls12 () const override |
virtual bool | allow_dtls_epoch0_restart () const |
virtual bool | allow_insecure_renegotiation () const |
virtual bool | allow_resumption_for_renegotiation () const |
virtual bool | allow_server_initiated_renegotiation () const |
bool | allow_tls10 () const override |
bool | allow_tls11 () const override |
bool | allow_tls12 () const override |
std::vector< std::string > | allowed_ciphers () const override |
std::vector< std::string > | allowed_key_exchange_methods () const override |
std::vector< std::string > | allowed_macs () const override |
bool | allowed_signature_hash (const std::string &hash) const |
std::vector< std::string > | allowed_signature_hashes () const override |
bool | allowed_signature_method (const std::string &sig_method) const |
std::vector< std::string > | allowed_signature_methods () const override |
virtual std::vector< Signature_Scheme > | allowed_signature_schemes () const |
virtual void | check_peer_key_acceptable (const Public_Key &public_key) const |
virtual Group_Params | choose_key_exchange_group (const std::vector< Group_Params > &peer_groups) const |
virtual std::vector< uint16_t > | ciphersuite_list (Protocol_Version version, bool have_srp) const |
virtual Group_Params | default_dh_group () const |
virtual size_t | dtls_default_mtu () const |
virtual size_t | dtls_initial_timeout () const |
virtual size_t | dtls_maximum_timeout () const |
virtual bool | hide_unknown_users () const |
virtual bool | include_time_in_hello_random () const |
std::vector< Group_Params > | key_exchange_groups () const override |
virtual Protocol_Version | latest_supported_version (bool datagram) const |
virtual size_t | maximum_certificate_chain_size () const |
virtual size_t | minimum_dh_group_size () const |
virtual size_t | minimum_dsa_group_size () const |
virtual size_t | minimum_ecdh_group_size () const |
virtual size_t | minimum_ecdsa_group_size () const |
virtual size_t | minimum_rsa_bits () const |
size_t | minimum_signature_strength () const override |
virtual bool | negotiate_encrypt_then_mac () const |
virtual bool | only_resume_with_exact_version () const |
virtual void | print (std::ostream &o) const |
virtual bool | request_client_certificate_authentication () const |
virtual bool | require_cert_revocation_info () const |
virtual bool | require_client_certificate_authentication () const |
virtual bool | send_fallback_scsv (Protocol_Version version) const |
virtual bool | server_uses_own_ciphersuite_preferences () const |
virtual uint32_t | session_ticket_lifetime () const |
virtual std::vector< uint16_t > | srtp_profiles () const |
virtual bool | support_cert_status_message () const |
std::string | to_string () const |
virtual bool | use_ecc_point_compression () const |
NSA Suite B 128-bit security level (RFC 6460)
Definition at line 352 of file tls_policy.h.
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virtualinherited |
If true, a request to renegotiate will close the connection with a fatal alert. Otherwise, a warning alert is sent.
Definition at line 349 of file tls_policy.cpp.
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virtualinherited |
Allows policy to reject any ciphersuites which are undesirable for whatever reason without having to reimplement ciphersuite_list
Definition at line 326 of file tls_policy.cpp.
References Botan::TLS::Policy::allowed_ciphers(), Botan::TLS::Policy::allowed_macs(), Botan::TLS::Ciphersuite::cipher_algo(), Botan::TLS::Ciphersuite::mac_algo(), and Botan::value_exists().
Referenced by Botan::TLS::Policy::ciphersuite_list().
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virtualinherited |
Definition at line 278 of file tls_policy.cpp.
References Botan::TLS::Policy::allow_dtls10(), Botan::TLS::Policy::allow_dtls12(), Botan::TLS::Policy::allow_tls10(), Botan::TLS::Policy::allow_tls11(), Botan::TLS::Policy::allow_tls12(), Botan::TLS::Protocol_Version::DTLS_V10, Botan::TLS::Protocol_Version::DTLS_V12, Botan::TLS::Protocol_Version::TLS_V10, Botan::TLS::Protocol_Version::TLS_V11, and Botan::TLS::Protocol_Version::TLS_V12.
Referenced by Botan::TLS::Client_Hello::Client_Hello(), and Botan::TLS::Policy::latest_supported_version().
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virtualinherited |
Consulted by server side. If true, allows clients to initiate a new handshake
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 332 of file tls_policy.cpp.
Referenced by Botan::TLS::Text_Policy::allow_client_initiated_renegotiation().
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inlineoverridevirtual |
Allow DTLS v1.0
Reimplemented from Botan::TLS::Policy.
Definition at line 378 of file tls_policy.h.
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inlineoverridevirtual |
Allow DTLS v1.2
Reimplemented from Botan::TLS::Policy.
Definition at line 379 of file tls_policy.h.
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virtualinherited |
If true, then allow a DTLS client to restart a connection to the same server association as described in section 4.2.8 of the DTLS RFC
Definition at line 350 of file tls_policy.cpp.
Referenced by Botan::TLS::Channel::received_data().
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virtualinherited |
Allow renegotiation even if the counterparty doesn't support the secure renegotiation extension.
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 334 of file tls_policy.cpp.
Referenced by Botan::TLS::Text_Policy::allow_insecure_renegotiation(), and Botan::TLS::Policy::print().
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virtualinherited |
Definition at line 345 of file tls_policy.cpp.
Referenced by Botan::TLS::Channel::renegotiate().
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virtualinherited |
Consulted by client side. If true, allows servers to initiate a new handshake
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 333 of file tls_policy.cpp.
Referenced by Botan::TLS::Text_Policy::allow_server_initiated_renegotiation(), and Botan::TLS::Policy::print().
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inlineoverridevirtual |
Allow TLS v1.0
Reimplemented from Botan::TLS::Policy.
Definition at line 375 of file tls_policy.h.
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inlineoverridevirtual |
Allow TLS v1.1
Reimplemented from Botan::TLS::Policy.
Definition at line 376 of file tls_policy.h.
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inlineoverridevirtual |
Allow TLS v1.2
Reimplemented from Botan::TLS::Policy.
Definition at line 377 of file tls_policy.h.
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inlineoverridevirtual |
Returns a list of ciphers we are willing to negotiate, in order of preference.
Reimplemented from Botan::TLS::Policy.
Definition at line 355 of file tls_policy.h.
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inlineoverridevirtual |
Returns a list of key exchange algorithms we are willing to use, in order of preference. Allowed values: DH, empty string (representing RSA using server certificate key)
Reimplemented from Botan::TLS::Policy.
Definition at line 364 of file tls_policy.h.
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inlineoverridevirtual |
Returns a list of MAC algorithms we are willing to use.
Reimplemented from Botan::TLS::Policy.
Definition at line 361 of file tls_policy.h.
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inherited |
Definition at line 122 of file tls_policy.cpp.
References Botan::TLS::Policy::allowed_signature_hashes(), and Botan::value_exists().
Referenced by Botan::TLS::Policy::allowed_signature_schemes(), and Botan::TLS::Handshake_State::choose_sig_format().
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inlineoverridevirtual |
Returns a list of hash algorithms we are willing to use for signatures, in order of preference.
Reimplemented from Botan::TLS::Policy.
Definition at line 358 of file tls_policy.h.
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inherited |
Definition at line 117 of file tls_policy.cpp.
References Botan::TLS::Policy::allowed_signature_methods(), and Botan::value_exists().
Referenced by Botan::TLS::Policy::allowed_signature_schemes(), and Botan::TLS::Handshake_State::parse_sig_format().
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inlineoverridevirtual |
Returns a list of signature algorithms we are willing to use, in order of preference. Allowed values RSA and DSA.
Reimplemented from Botan::TLS::Policy.
Definition at line 367 of file tls_policy.h.
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virtualinherited |
Definition at line 22 of file tls_policy.cpp.
References Botan::TLS::all_signature_schemes(), Botan::TLS::Policy::allowed_signature_hash(), Botan::TLS::Policy::allowed_signature_method(), Botan::TLS::hash_function_of_scheme(), Botan::TLS::signature_algorithm_of_scheme(), and Botan::TLS::signature_scheme_is_known().
Referenced by Botan::TLS::Handshake_State::choose_sig_format(), and Botan::TLS::Client_Hello::Client_Hello().
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virtualinherited |
Throw an exception if you don't like the peer's key. Default impl checks the key size against minimum_rsa_bits, minimum_ecdsa_group_size, or minimum_ecdh_group_size depending on the key's type. Override if you'd like to perform some other kind of test on (or logging of) the peer's keys.
Definition at line 231 of file tls_policy.cpp.
References Botan::Public_Key::algo_name(), Botan::TLS::Alert::INSUFFICIENT_SECURITY, Botan::Public_Key::key_length(), Botan::TLS::Policy::minimum_dh_group_size(), Botan::TLS::Policy::minimum_dsa_group_size(), Botan::TLS::Policy::minimum_ecdh_group_size(), Botan::TLS::Policy::minimum_ecdsa_group_size(), Botan::TLS::Policy::minimum_rsa_bits(), and Botan::ASN1::to_string().
Referenced by Botan::TLS::Callbacks::tls_dh_agree(), Botan::TLS::Callbacks::tls_ecdh_agree(), Botan::TLS::Server_Key_Exchange::verify(), and Botan::TLS::Certificate_Verify::verify().
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virtualinherited |
Select a key exchange group to use, from the list of groups sent by the peer. If none are acceptable, return Group_Params::NONE
Definition at line 132 of file tls_policy.cpp.
References Botan::TLS::Policy::key_exchange_groups(), Botan::TLS::NONE, and Botan::value_exists().
Referenced by Botan::TLS::Client_Key_Exchange::Client_Key_Exchange(), and Botan::TLS::Server_Key_Exchange::Server_Key_Exchange().
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virtualinherited |
Return allowed ciphersuites, in order of preference
Definition at line 442 of file tls_policy.cpp.
References Botan::TLS::Policy::acceptable_ciphersuite(), Botan::TLS::Ciphersuite::all_known_ciphersuites(), Botan::TLS::Policy::allowed_ciphers(), Botan::TLS::Policy::allowed_key_exchange_methods(), Botan::TLS::Policy::allowed_macs(), Botan::TLS::Policy::allowed_signature_methods(), Botan::TLS::CECPQ1, Botan::TLS::IMPLICIT, Botan::TLS::Policy::key_exchange_groups(), Botan::TLS::SRP_SHA, Botan::value_exists(), and Botan::TLS::X25519.
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virtualinherited |
Definition at line 148 of file tls_policy.cpp.
References Botan::TLS::FFDHE_2048, Botan::TLS::group_param_is_dh(), and Botan::TLS::Policy::key_exchange_groups().
Referenced by Botan::TLS::Server_Key_Exchange::Server_Key_Exchange().
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virtualinherited |
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 358 of file tls_policy.cpp.
Referenced by Botan::TLS::Channel::create_handshake_state(), and Botan::TLS::Text_Policy::dtls_default_mtu().
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virtualinherited |
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 355 of file tls_policy.cpp.
Referenced by Botan::TLS::Channel::create_handshake_state(), and Botan::TLS::Text_Policy::dtls_initial_timeout().
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virtualinherited |
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 356 of file tls_policy.cpp.
Referenced by Botan::TLS::Channel::create_handshake_state(), and Botan::TLS::Text_Policy::dtls_maximum_timeout().
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virtualinherited |
If this function returns false, unknown SRP/PSK identifiers will be rejected with an unknown_psk_identifier alert as soon as the non-existence is identified. Otherwise, a false identifier value will be used and the protocol allowed to proceed, causing the handshake to eventually fail without revealing that the username does not exist on this system.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 341 of file tls_policy.cpp.
Referenced by Botan::TLS::Client_Key_Exchange::Client_Key_Exchange(), Botan::TLS::Text_Policy::hide_unknown_users(), Botan::TLS::Policy::print(), and Botan::TLS::Server_Key_Exchange::Server_Key_Exchange().
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virtualinherited |
The protocol dictates that the first 32 bits of the random field are the current time in seconds. However this allows client fingerprinting attacks. Set to false to disable, in which case random bytes will be used instead.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 340 of file tls_policy.cpp.
Referenced by Botan::TLS::Text_Policy::include_time_in_hello_random(), Botan::TLS::make_hello_random(), and Botan::TLS::Policy::print().
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inlineoverridevirtual |
Return list of ECC curves and FFDHE groups we are willing to use in order of preference.
Reimplemented from Botan::TLS::Policy.
Definition at line 370 of file tls_policy.h.
References Botan::TLS::SECP256R1.
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virtualinherited |
Returns the more recent protocol version we are willing to use, for either TLS or DTLS depending on datagram param. Shouldn't ever need to override this unless you want to allow a user to disable use of TLS v1.2 (which is not recommended)
Definition at line 300 of file tls_policy.cpp.
References Botan::TLS::Policy::acceptable_protocol_version(), Botan::TLS::Protocol_Version::DTLS_V10, Botan::TLS::Protocol_Version::DTLS_V12, Botan::TLS::Protocol_Version::TLS_V10, Botan::TLS::Protocol_Version::TLS_V11, and Botan::TLS::Protocol_Version::TLS_V12.
Referenced by Botan::TLS::Policy::send_fallback_scsv().
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Definition at line 352 of file tls_policy.cpp.
Referenced by Botan::TLS::Certificate::Certificate().
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Return the minimum DH group size we're willing to use Default is currently 1024 (insecure), should be 2048
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 186 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::check_peer_key_acceptable(), Botan::TLS::Text_Policy::minimum_dh_group_size(), and Botan::TLS::Policy::print().
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virtualinherited |
Minimum DSA group size, default 2048 bits
Reimplemented in Botan::TLS::BSI_TR_02102_2.
Definition at line 225 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::check_peer_key_acceptable().
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virtualinherited |
Return the minimum ECDH group size we're willing to use for key exchange
Default 255, allowing x25519 and larger x25519 is the smallest curve we will negotiate P-521 is the largest
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 197 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::check_peer_key_acceptable(), Botan::TLS::Text_Policy::minimum_ecdh_group_size(), and Botan::TLS::Policy::print().
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virtualinherited |
For ECDSA authenticated ciphersuites, the smallest key size the client will accept. This policy is currently only enforced on the server by the client.
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 191 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::check_peer_key_acceptable(), and Botan::TLS::Text_Policy::minimum_ecdsa_group_size().
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virtualinherited |
Return the minimum bit size we're willing to accept for RSA key exchange or server signatures.
It does not place any requirements on the size of any RSA signature(s) which were used to check the server certificate. This is only concerned with the server's public key.
Default is 2048 which is smallest RSA key size still secure for medium term security.
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 213 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::check_peer_key_acceptable(), Botan::TLS::Text_Policy::minimum_rsa_bits(), and Botan::TLS::Policy::print().
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inlineoverridevirtual |
The minimum signature strength we will accept Returning 80 allows RSA 1024 and SHA-1. Values larger than 80 disable SHA-1 support. Returning 110 allows RSA 2048. Return 128 to force ECC (P-256) or large (~3000 bit) RSA keys. Default is 110
Reimplemented from Botan::TLS::Policy.
Definition at line 373 of file tls_policy.h.
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virtualinherited |
Indicates whether the encrypt-then-MAC extension should be negotiated (RFC 7366)
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 343 of file tls_policy.cpp.
Referenced by Botan::TLS::Client_Hello::Client_Hello(), Botan::TLS::Text_Policy::negotiate_encrypt_then_mac(), Botan::TLS::Policy::print(), and Botan::TLS::Server_Hello::Server_Hello().
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virtualinherited |
Definition at line 346 of file tls_policy.cpp.
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virtualinherited |
Convert this policy to a printable format.
o | stream to be printed to |
Definition at line 553 of file tls_policy.cpp.
References Botan::TLS::Policy::allow_dtls10(), Botan::TLS::Policy::allow_dtls12(), Botan::TLS::Policy::allow_insecure_renegotiation(), Botan::TLS::Policy::allow_server_initiated_renegotiation(), Botan::TLS::Policy::allow_tls10(), Botan::TLS::Policy::allow_tls11(), Botan::TLS::Policy::allow_tls12(), Botan::TLS::Policy::allowed_ciphers(), Botan::TLS::Policy::allowed_key_exchange_methods(), Botan::TLS::Policy::allowed_macs(), Botan::TLS::Policy::allowed_signature_hashes(), Botan::TLS::Policy::allowed_signature_methods(), Botan::TLS::Policy::hide_unknown_users(), Botan::TLS::Policy::include_time_in_hello_random(), Botan::TLS::Policy::key_exchange_groups(), Botan::TLS::Policy::minimum_dh_group_size(), Botan::TLS::Policy::minimum_ecdh_group_size(), Botan::TLS::Policy::minimum_rsa_bits(), Botan::TLS::Policy::minimum_signature_strength(), Botan::TLS::Policy::negotiate_encrypt_then_mac(), Botan::TLS::Policy::server_uses_own_ciphersuite_preferences(), Botan::TLS::Policy::session_ticket_lifetime(), and Botan::TLS::Policy::support_cert_status_message().
Referenced by Botan::TLS::Policy::to_string().
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virtualinherited |
Indicate if client certificate authentication is requested. If true, then a cert will be requested.
Definition at line 348 of file tls_policy.cpp.
References Botan::TLS::Policy::require_client_certificate_authentication().
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virtualinherited |
Return if cert revocation info (CRL/OCSP) is required If true, validation will fail unless a valid CRL or OCSP response was examined.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 208 of file tls_policy.cpp.
Referenced by Botan::TLS::Text_Policy::require_cert_revocation_info(), and Botan::TLS::Callbacks::tls_verify_cert_chain().
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virtualinherited |
Indicate if client certificate authentication is required. If true, then a cert will be requested and if the client does not send a certificate the connection will be closed.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 347 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::request_client_certificate_authentication(), and Botan::TLS::Text_Policy::require_client_certificate_authentication().
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virtualinherited |
When offering this version, should we send a fallback SCSV? Default returns true iff version is not the latest version the policy allows, exists to allow override in case of interop problems.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 273 of file tls_policy.cpp.
References Botan::TLS::Protocol_Version::is_datagram_protocol(), and Botan::TLS::Policy::latest_supported_version().
Referenced by Botan::TLS::Client_Hello::Client_Hello(), and Botan::TLS::Text_Policy::send_fallback_scsv().
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virtualinherited |
Reimplemented in Botan::TLS::BSI_TR_02102_2, and Botan::TLS::Text_Policy.
Definition at line 342 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::print(), and Botan::TLS::Text_Policy::server_uses_own_ciphersuite_preferences().
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virtualinherited |
Return the allowed lifetime of a session ticket. If 0, session tickets do not expire until the session ticket key rolls over. Expired session tickets cannot be used to resume a session.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 268 of file tls_policy.cpp.
Referenced by Botan::TLS::Policy::print(), and Botan::TLS::Text_Policy::session_ticket_lifetime().
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virtualinherited |
If this returns a non-empty vector, and DTLS is negotiated, then we will also attempt to negotiate the SRTP extension from RFC 5764 using the returned values as the profile ids.
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 364 of file tls_policy.cpp.
Referenced by Botan::TLS::Client_Hello::Client_Hello(), and Botan::TLS::Server_Hello::Server_Hello().
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virtualinherited |
Indicates whether certificate status messages should be supported
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 344 of file tls_policy.cpp.
Referenced by Botan::TLS::Client_Hello::Client_Hello(), Botan::TLS::Policy::print(), Botan::TLS::Server_Hello::Server_Hello(), and Botan::TLS::Text_Policy::support_cert_status_message().
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inherited |
Convert this policy to a printable format. Same as calling print
on a ostringstream and reading o.str()
Definition at line 581 of file tls_policy.cpp.
References Botan::TLS::Policy::print().
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virtualinherited |
Request that ECC curve points are sent compressed
Reimplemented in Botan::TLS::Text_Policy.
Definition at line 127 of file tls_policy.cpp.
Referenced by Botan::TLS::Client_Hello::Client_Hello(), Botan::TLS::Server_Hello::Server_Hello(), and Botan::TLS::Text_Policy::use_ecc_point_compression().