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authorIngela Anderton Andin <[email protected]>2018-01-29 14:37:30 +0100
committerIngela Anderton Andin <[email protected]>2018-02-05 15:03:53 +0100
commit2ce6be54915587d2c14f95b9f65197bd8c86554e (patch)
tree734748b00e6879dd5f6acd869cdca36d10c455bf /lib/ssl/src
parent7ba4144d71899fa7eb9e1f35c50e3633772aa283 (diff)
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ssl: Uses aead as mac value in AEAD cipher suites
Authenticated encryption (AE) and authenticated encryption with associated data (AEAD, variant of AE) is a form of encryption which simultaneously provides confidentiality, integrity, and authenticity assurances on the data. This is more logical value then null that was used, this happened to work as the AEAD property was derived form other data, but it is confusing!
Diffstat (limited to 'lib/ssl/src')
-rw-r--r--lib/ssl/src/ssl.erl12
-rw-r--r--lib/ssl/src/ssl_cipher.erl116
2 files changed, 69 insertions, 59 deletions
diff --git a/lib/ssl/src/ssl.erl b/lib/ssl/src/ssl.erl
index 49634ad3a5..575b4e2e11 100644
--- a/lib/ssl/src/ssl.erl
+++ b/lib/ssl/src/ssl.erl
@@ -1268,9 +1268,19 @@ tuple_to_map({Kex, Cipher, Mac}) ->
tuple_to_map({Kex, Cipher, Mac, Prf}) ->
#{key_exchange => Kex,
cipher => Cipher,
- mac => Mac,
+ mac => tuple_to_map_mac(Cipher, Mac),
prf => Prf}.
+%% Backwards compatible
+tuple_to_map_mac(aes_128_gcm, _) ->
+ aead;
+tuple_to_map_mac(aes_256_gcm, _) ->
+ aead;
+tuple_to_map_mac(chacha20_poly1305, _) ->
+ aead;
+tuple_to_map_mac(_, MAC) ->
+ MAC.
+
handle_eccs_option(Value, Version) when is_list(Value) ->
{_Major, Minor} = tls_version(Version),
try tls_v1:ecc_curves(Minor, Value) of
diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl
index 78fa9ee753..6258cbb047 100644
--- a/lib/ssl/src/ssl_cipher.erl
+++ b/lib/ssl/src/ssl_cipher.erl
@@ -54,7 +54,7 @@
-type key_algo() :: null | rsa | dhe_rsa | dhe_dss | ecdhe_ecdsa| ecdh_ecdsa | ecdh_rsa| srp_rsa| srp_dss | psk | dhe_psk | rsa_psk | dh_anon | ecdh_anon | srp_anon.
-type erl_cipher_suite() :: #{key_exchange := key_algo(),
cipher := cipher(),
- mac := hash(),
+ mac := hash() | aead,
prf := hash() | default_prf %% Old cipher suites, version dependent
}.
-type old_erl_cipher_suite() :: {key_algo(), cipher(), hash()} % Pre TLS 1.2
@@ -685,32 +685,32 @@ suite_definition(?TLS_RSA_PSK_WITH_AES_256_CBC_SHA) ->
suite_definition(?TLS_PSK_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => psk,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_PSK_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => psk,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_DHE_PSK_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => dhe_psk,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_DHE_PSK_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => dhe_psk,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_RSA_PSK_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => rsa_psk,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_RSA_PSK_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => rsa_psk,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_PSK_WITH_AES_128_CBC_SHA256) ->
#{key_exchange => psk,
@@ -989,42 +989,42 @@ suite_definition(?TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384) ->
suite_definition(?TLS_RSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => rsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_RSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => rsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_DHE_RSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => dhe_rsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_DHE_RSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => dhe_rsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_DH_RSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => dh_rsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_DH_RSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => dh_rsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_DHE_DSS_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => dhe_dss,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_DHE_DSS_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => dhe_dss,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_DH_DSS_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => dh_dss,
@@ -1034,74 +1034,74 @@ suite_definition(?TLS_DH_DSS_WITH_AES_128_GCM_SHA256) ->
suite_definition(?TLS_DH_DSS_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => dh_dss,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_DH_anon_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => dh_anon,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_DH_anon_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => dh_anon,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
%% RFC 5289 ECC AES-GCM Cipher Suites
suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => ecdhe_ecdsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => ecdhe_ecdsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => ecdh_ecdsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => ecdh_ecdsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => ecdhe_rsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => ecdhe_rsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
suite_definition(?TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256) ->
#{key_exchange => ecdh_rsa,
cipher => aes_128_gcm,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384) ->
#{key_exchange => ecdh_rsa,
cipher => aes_256_gcm,
- mac => null,
+ mac => aead,
prf => sha384};
%% draft-agl-tls-chacha20poly1305-04 Chacha20/Poly1305 Suites
suite_definition(?TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256) ->
#{key_exchange => ecdhe_rsa,
cipher => chacha20_poly1305,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256) ->
#{key_exchange => ecdhe_ecdsa,
cipher => chacha20_poly1305,
- mac => null,
+ mac => aead,
prf => sha256};
suite_definition(?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256) ->
#{key_exchange => dhe_rsa,
cipher => chacha20_poly1305,
- mac => null,
+ mac => aead,
prf => sha256}.
%%--------------------------------------------------------------------
@@ -1289,32 +1289,32 @@ suite(#{key_exchange := rsa_psk,
%%% TLS 1.2 PSK Cipher Suites RFC 5487
suite(#{key_exchange := psk,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_PSK_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := psk,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_PSK_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := dhe_psk,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DHE_PSK_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := dhe_psk,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_DHE_PSK_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := rsa_psk,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_RSA_PSK_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := rsa_psk,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_RSA_PSK_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := psk,
@@ -1546,119 +1546,119 @@ suite(#{key_exchange := ecdh_rsa,
%% RFC 5288 AES-GCM Cipher Suites
suite(#{key_exchange := rsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_RSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := rsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_RSA_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := dhe_rsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DHE_RSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := dhe_rsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_DHE_RSA_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := dh_rsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DH_RSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := dh_rsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_DH_RSA_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := dhe_dss,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DHE_DSS_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := dhe_dss,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_DHE_DSS_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := dh_dss,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DH_DSS_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := dh_dss,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_DH_DSS_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := dh_anon,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DH_anon_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := dh_anon,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_DH_anon_WITH_AES_256_GCM_SHA384;
%% RFC 5289 ECC AES-GCM Cipher Suites
suite(#{key_exchange := ecdhe_ecdsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := ecdhe_ecdsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := ecdh_ecdsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := ecdh_ecdsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := ecdhe_rsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := ecdhe_rsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384;
suite(#{key_exchange := ecdh_rsa,
cipher := aes_128_gcm,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256;
suite(#{key_exchange := ecdh_rsa,
cipher := aes_256_gcm,
- mac := null,
+ mac := aead,
prf := sha384}) ->
?TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384;
%% draft-agl-tls-chacha20poly1305-04 Chacha20/Poly1305 Suites
suite(#{key_exchange := ecdhe_rsa,
cipher := chacha20_poly1305,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256;
suite(#{key_exchange := ecdhe_ecdsa,
cipher := chacha20_poly1305,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256;
suite(#{key_exchange := dhe_rsa,
cipher := chacha20_poly1305,
- mac := null,
+ mac := aead,
prf := sha256}) ->
?TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256.