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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2013-2023. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(dtls_v1).
-include("ssl_cipher.hrl").
-include("ssl_record.hrl").
-export([suites/1,
all_suites/1,
anonymous_suites/1,
exclusive_suites/1,
exclusive_anonymous_suites/1,
hmac_hash/3,
ecc_curves/1,
corresponding_tls_version/1,
corresponding_dtls_version/1,
cookie_secret/0,
cookie_timeout/0]).
-define(COOKIE_BASE_TIMEOUT, 30000).
-spec suites(ssl_record:ssl_version()) -> [ssl_cipher_format:cipher_suite()].
suites(Version) ->
lists:filter(fun(Cipher) ->
is_acceptable_cipher(ssl_cipher_format:suite_bin_to_map(Cipher))
end,
tls_v1:suites(corresponding_tls_version(Version))).
all_suites(Version) ->
lists:filter(fun(Cipher) ->
is_acceptable_cipher(ssl_cipher_format:suite_bin_to_map(Cipher))
end,
ssl_cipher:all_suites(corresponding_tls_version(Version))).
anonymous_suites(Version) ->
lists:filter(fun(Cipher) ->
is_acceptable_cipher(ssl_cipher_format:suite_bin_to_map(Cipher))
end,
ssl_cipher:anonymous_suites(corresponding_tls_version(Version))).
exclusive_suites(Version) ->
lists:filter(fun(Cipher) ->
is_acceptable_cipher(ssl_cipher_format:suite_bin_to_map(Cipher))
end,
tls_v1:exclusive_suites(corresponding_tls_version(Version))).
exclusive_anonymous_suites(Version) ->
lists:filter(fun(Cipher) ->
is_acceptable_cipher(ssl_cipher_format:suite_bin_to_map(Cipher))
end,
tls_v1:exclusive_anonymous_suites(corresponding_tls_version(Version))).
hmac_hash(MacAlg, MacSecret, Value) ->
tls_v1:hmac_hash(MacAlg, MacSecret, Value).
ecc_curves(Version) ->
tls_v1:ecc_curves(corresponding_tls_version(Version)).
corresponding_tls_version(?DTLS_1_0) ->
?TLS_1_1;
corresponding_tls_version(?DTLS_1_2) ->
?TLS_1_2.
cookie_secret() ->
crypto:strong_rand_bytes(32).
cookie_timeout() ->
%% Cookie will live for two timeouts periods
round(rand:uniform() * ?COOKIE_BASE_TIMEOUT/2).
corresponding_dtls_version(?TLS_1_1) ->
?DTLS_1_0;
corresponding_dtls_version(?TLS_1_2) ->
?DTLS_1_2.
is_acceptable_cipher(Suite) ->
not ssl_cipher:is_stream_ciphersuite(Suite).
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