abstract class OpenSSL::SSL::Context

Direct Known Subclasses

Defined in:

openssl/ssl/context.cr

Constant Summary

CIPHERS = (["ECDHE-ECDSA-CHACHA20-POLY1305", "ECDHE-RSA-CHACHA20-POLY1305", "ECDHE-ECDSA-AES128-GCM-SHA256", "ECDHE-RSA-AES128-GCM-SHA256", "ECDHE-ECDSA-AES256-GCM-SHA384", "ECDHE-RSA-AES256-GCM-SHA384", "DHE-RSA-AES128-GCM-SHA256", "DHE-RSA-AES256-GCM-SHA384", "ECDHE-ECDSA-AES128-SHA256", "ECDHE-RSA-AES128-SHA256", "ECDHE-ECDSA-AES128-SHA", "ECDHE-RSA-AES256-SHA384", "ECDHE-RSA-AES128-SHA", "ECDHE-ECDSA-AES256-SHA384", "ECDHE-ECDSA-AES256-SHA", "ECDHE-RSA-AES256-SHA", "DHE-RSA-AES128-SHA256", "DHE-RSA-AES128-SHA", "DHE-RSA-AES256-SHA256", "DHE-RSA-AES256-SHA", "ECDHE-ECDSA-DES-CBC3-SHA", "ECDHE-RSA-DES-CBC3-SHA", "EDH-RSA-DES-CBC3-SHA", "AES128-GCM-SHA256", "AES256-GCM-SHA384", "AES128-SHA256", "AES256-SHA256", "AES128-SHA", "AES256-SHA", "DES-CBC3-SHA", "!RC4", "!aNULL", "!eNULL", "!LOW", "!3DES", "!MD5", "!EXP", "!PSK", "!SRP", "!DSS"] of ::String).join(' ')

The list of secure ciphers (intermediate security) as of May 2016 as per https://wiki.mozilla.org/Security/Server_Side_TLS

Constructors

Instance Method Summary

Instance methods inherited from class Reference

==(other : self)
==(other)
==
, dup dup, hash(hasher) hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference)
same?(other : Nil)
same?
, to_s(io : IO) : Nil to_s

Constructor methods inherited from class Reference

new new

Instance methods inherited from class Object

!=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other)
===
, =~(other) =~, class class, dup dup, hash(hasher)
hash
hash
, inspect(io : IO)
inspect
inspect
, itself itself, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, tap(&block) tap, to_json(io : IO)
to_json
to_json
, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ")
to_pretty_json
, to_s
to_s(io : IO)
to_s
, to_yaml(io : IO)
to_yaml
to_yaml
, try(&block) try, unsafe_as(type : T.class) forall T unsafe_as

Constructor methods inherited from class Object

from_json(string_or_io, root : String) : self
from_json(string_or_io) : self
from_json
, from_yaml(string_or_io) : self from_yaml

Constructor Detail

def self.new(method : LibSSL::SSLMethod) #

[View source]

Instance Method Detail

def add_modes(mode : OpenSSL::SSL::Modes) #

Adds modes to the TLS context.


[View source]
def add_options(options : OpenSSL::SSL::Options) #

Adds options to the TLS context.

Example:

context.add_options(
  OpenSSL::SSL::Options::ALL |       # various workarounds
  OpenSSL::SSL::Options::NO_SSL_V2 | # disable overly deprecated SSLv2
  OpenSSL::SSL::Options::NO_SSL_V3   # disable deprecated SSLv3
)

[View source]
def add_x509_verify_flags(flags : OpenSSL::X509VerifyFlags) #

Sets the given OpenSSL::X509VerifyFlags in this context, additionally to the already set ones.


[View source]
def alpn_protocol=(protocol : String) #

Specifies an ALPN protocol to negotiate with the remote endpoint. This is required to negotiate HTTP/2 with browsers, since browser vendors decided not to implement HTTP/2 over insecure connections.

Example:

context.alpn_protocol = "h2"

[View source]
def ca_certificates=(file_path : String) #

Sets the path to a file containing all CA certificates, in PEM format, used to validate the peers certificate.


[View source]
def ca_certificates_path=(dir_path : String) #

Sets the path to a directory containing all CA certificates used to validate the peers certificate. The certificates should be in PEM format and the c_rehash(1) utility must have been run in the directory.


[View source]
def certificate_chain=(file_path : String) #

Specify the path to the certificate chain file to use. In server mode this is presented to the client, in client mode this used as client certificate.


[View source]
def ciphers=(ciphers : String) #

Specify a list of TLS ciphers to use or discard.


[View source]
def default_verify_param=(name : String) #

Set this context verify param to the default one of the given name.

Depending on the OpenSSL version, the available defaults are default, pkcs7, smime_sign, ssl_client and ssl_server.


[View source]
def finalize #

[View source]
def modes #

Returns the current modes set on the TLS context.


[View source]
def options #

Returns the current options set on the TLS context.


[View source]
def private_key=(file_path : String) #

Specify the path to the private key to use. The key must in PEM format. The key must correspond to the entity certificate set by #certificate_chain=.


[View source]
def remove_modes(mode : OpenSSL::SSL::Modes) #

Removes modes from the TLS context.


[View source]
def remove_options(options : OpenSSL::SSL::Options) #

Removes options from the TLS context.

Example:

context.remove_options(OpenSSL::SSL::Options::NO_SSL_V3)

[View source]
def set_default_verify_paths #

Sets the default paths for ca_certiifcates= and #ca_certificates_path=.


[View source]
def set_tmp_ecdh_key(curve = LibCrypto::NID_X9_62_prime256v1) #

Adds a temporary ECDH key curve to the TLS context. This is required to enable the EECDH cipher suites. By default the prime256 curve will be used.


[View source]
def to_unsafe : LibSSL::SSLContext #

[View source]
def verify_mode #

Returns the current verify mode. See the SSL_CTX_set_verify(3) manpage for more details.


[View source]
def verify_mode=(mode : OpenSSL::SSL::VerifyMode) #

Sets the verify mode. See the SSL_CTX_set_verify(3) manpage for more details.


[View source]