ssl: Update function ssl:eccs/1

Remove support of version tuples (e.g. {3,3}) from API function
ssl:eccs/1.

Update function spec and documentation.

Change-Id: I891e42a2ca31c3e06b4edeeb866c0df874f2035b

3 files changed, 12 insertions, 34 deletions

diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml
index 422bd6a19d..8e4c21ba02 100644
--- a/lib/ssl/doc/src/ssl.xml
+++ b/lib/ssl/doc/src/ssl.xml
@@ -128,7 +128,7 @@
       <name name="hostname"/>
      </datatype>
 
-       <datatype>
+     <datatype>
       <name name="ip_address"/>
      </datatype>
 
@@ -137,26 +137,14 @@
      </datatype>
 
      <datatype>
-       <name name="protocol_version_tuple"/>
-     </datatype>
-
-     <datatype>
        <name name="tls_version"/>
      </datatype>
 
      <datatype>
-       <name name="tls_version_tuple"/>
-     </datatype>
-
-     <datatype>
        <name name="dtls_version"/>
      </datatype>
 
      <datatype>
-       <name name="dtls_version_tuple"/>
-     </datatype>
-
-     <datatype>
        <name name="tls_legacy_version"/>
      </datatype>
 
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index a3138e8c30..f4941fe0bf 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -80,7 +80,6 @@
               cipher_filters/0,
               sign_algo/0,
               protocol_version/0,
-              protocol_version_tuple/0,
               protocol_extensions/0,
               session_id/0,
               error_alert/0,
@@ -105,11 +104,8 @@
 -type ip_address()               :: inet:ip_address().
 -type session_id()               :: binary(). % exported
 -type protocol_version()         :: tls_version() | dtls_version(). % exported
--type protocol_version_tuple()   :: tls_version_tuple() | dtls_version_tuple(). % exported
 -type tls_version()              :: 'tlsv1.2' | 'tlsv1.3' | tls_legacy_version().
--type tls_version_tuple()        :: {3,0} | {3,1} | {3,2} | {3,3} | {3,4}.
 -type dtls_version()             :: 'dtlsv1.2' | dtls_legacy_version().
--type dtls_version_tuple()       :: {254,254} | {254,253}.
 -type tls_legacy_version()       ::  tlsv1 | 'tlsv1.1' | sslv3.
 -type dtls_legacy_version()      :: 'dtlsv1'.
 -type verify_type()              :: verify_none | verify_peer.
@@ -1083,27 +1079,23 @@ eccs() ->
 
 %%--------------------------------------------------------------------
 -spec eccs(Version) -> NamedCurves when
-      Version :: protocol_version() | protocol_version_tuple(),
+      Version :: protocol_version(),
       NamedCurves :: [named_curve()].
 
 %% Description: returns the curves supported for a given version of
 %% ssl/tls.
 %%--------------------------------------------------------------------
-eccs({3,0}) ->
+eccs(sslv3) ->
     [];
-eccs({3,_}) ->
-    Curves = tls_v1:ecc_curves(all),
-    eccs_filter_supported(Curves);
-eccs({254,_} = Version) ->
-    eccs(dtls_v1:corresponding_tls_version(Version));
+eccs('dtlsv1') ->
+    eccs('tlsv1.1');
+eccs('dtlsv1.2') ->
+    eccs('tlsv1.2');
 eccs(Version) when Version == 'tlsv1.2';
                    Version == 'tlsv1.1';
-                   Version == tlsv1;
-                   Version == sslv3 ->
-    eccs(tls_record:protocol_version(Version));
-eccs(Version) when Version == 'dtlsv1.2';
-                   Version == 'dtlsv1'->
-    eccs(dtls_v1:corresponding_tls_version(dtls_record:protocol_version(Version))).
+                   Version == tlsv1 ->
+    Curves = tls_v1:ecc_curves(all),
+    eccs_filter_supported(Curves).
 
 eccs_filter_supported(Curves) ->
     CryptoCurves = crypto:ec_curves(),
diff --git a/lib/ssl/test/ssl_basic_SUITE.erl b/lib/ssl/test/ssl_basic_SUITE.erl
index 56e6117cc4..20d9f28512 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -1832,14 +1832,12 @@ eccs() ->
 
 eccs(Config) when is_list(Config) ->
     [_|_] = All = ssl:eccs(),
-    [] = SSL3 = ssl:eccs({3,0}),
-    [_|_] = Tls = ssl:eccs({3,1}),
-    [_|_] = Tls1 = ssl:eccs({3,2}),
-    [_|_] = Tls2 = ssl:eccs({3,3}),
     [] = SSL3 = ssl:eccs(sslv3),
     [_|_] = Tls = ssl:eccs(tlsv1),
     [_|_] = Tls1 = ssl:eccs('tlsv1.1'),
     [_|_] = Tls2 = ssl:eccs('tlsv1.2'),
+    [_|_] = Tls1 = ssl:eccs('dtlsv1'),
+    [_|_] = Tls2 = ssl:eccs('dtlsv1.2'),
     %% ordering is currently unverified by the test
     true = lists:sort(All) =:= lists:usort(SSL3 ++ Tls ++ Tls1 ++ Tls2),
     ok.