diff options
Diffstat (limited to 'lib/ssl/src/dtls_v1.erl')
| -rw-r--r-- | lib/ssl/src/dtls_v1.erl | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/lib/ssl/src/dtls_v1.erl b/lib/ssl/src/dtls_v1.erl index ffd3e4b833..4aaf8baa6c 100644 --- a/lib/ssl/src/dtls_v1.erl +++ b/lib/ssl/src/dtls_v1.erl @@ -21,12 +21,24 @@ -include("ssl_cipher.hrl"). --export([suites/1, mac_hash/7, ecc_curves/1, corresponding_tls_version/1, corresponding_dtls_version/1]). +-export([suites/1, all_suites/1, mac_hash/7, ecc_curves/1, + corresponding_tls_version/1, corresponding_dtls_version/1, + cookie_secret/0, cookie_timeout/0]). + +-define(COOKIE_BASE_TIMEOUT, 30000). -spec suites(Minor:: 253|255) -> [ssl_cipher:cipher_suite()]. suites(Minor) -> - tls_v1:suites(corresponding_minor_tls_version(Minor)). + lists:filter(fun(Cipher) -> + is_acceptable_cipher(ssl_cipher:suite_definition(Cipher)) + end, + tls_v1:suites(corresponding_minor_tls_version(Minor))). +all_suites(Version) -> + lists:filter(fun(Cipher) -> + is_acceptable_cipher(ssl_cipher:suite_definition(Cipher)) + end, + ssl_cipher:all_suites(corresponding_tls_version(Version))). mac_hash(Version, MacAlg, MacSecret, SeqNo, Type, Length, Fragment) -> tls_v1:mac_hash(MacAlg, MacSecret, SeqNo, Type, Version, @@ -38,6 +50,13 @@ ecc_curves({_Major, Minor}) -> corresponding_tls_version({254, Minor}) -> {3, corresponding_minor_tls_version(Minor)}. +cookie_secret() -> + crypto:strong_rand_bytes(32). + +cookie_timeout() -> + %% Cookie will live for two timeouts periods + round(rand:uniform() * ?COOKIE_BASE_TIMEOUT/2). + corresponding_minor_tls_version(255) -> 2; corresponding_minor_tls_version(253) -> @@ -50,3 +69,5 @@ corresponding_minor_dtls_version(2) -> 255; corresponding_minor_dtls_version(3) -> 253. +is_acceptable_cipher(Suite) -> + not ssl_cipher:is_stream_ciphersuite(Suite). |