diff options
Diffstat (limited to 'lib/ssl/src/tls_v1.erl')
| -rw-r--r-- | lib/ssl/src/tls_v1.erl | 211 |
1 files changed, 200 insertions, 11 deletions
diff --git a/lib/ssl/src/tls_v1.erl b/lib/ssl/src/tls_v1.erl index 1bfd9a8b6d..83dd7585dd 100644 --- a/lib/ssl/src/tls_v1.erl +++ b/lib/ssl/src/tls_v1.erl @@ -32,7 +32,11 @@ -export([master_secret/4, finished/5, certificate_verify/3, mac_hash/7, hmac_hash/3, setup_keys/8, suites/1, prf/5, ecc_curves/1, ecc_curves/2, oid_to_enum/1, enum_to_oid/1, - default_signature_algs/1, signature_algs/2]). + default_signature_algs/1, signature_algs/2, + default_signature_schemes/1, signature_schemes/2, + groups/1, groups/2, group_to_enum/1, enum_to_group/1, default_groups/1]). + +-export([derive_secret/4, hkdf_expand_label/5, hkdf_extract/3, hkdf_expand/4]). -type named_curve() :: sect571r1 | sect571k1 | secp521r1 | brainpoolP512r1 | sect409k1 | sect409r1 | brainpoolP384r1 | secp384r1 | @@ -41,12 +45,53 @@ sect193r1 | sect193r2 | secp192k1 | secp192r1 | sect163k1 | sect163r1 | sect163r2 | secp160k1 | secp160r1 | secp160r2. -type curves() :: [named_curve()]. --export_type([curves/0, named_curve/0]). +-type group() :: secp256r1 | secp384r1 | secp521r1 | ffdhe2048 | + ffdhe3072 | ffdhe4096 | ffdhe6144 | ffdhe8192. +-type supported_groups() :: [group()]. +-export_type([curves/0, named_curve/0, group/0, supported_groups/0]). %%==================================================================== %% Internal application API %%==================================================================== +%% TLS 1.3 --------------------------------------------------- +-spec derive_secret(Secret::binary(), Label::binary(), + Messages::binary(), Algo::ssl_cipher_format:hash()) -> Key::binary(). +derive_secret(Secret, Label, Messages, Algo) -> + Hash = crypto:hash(mac_algo(Algo), Messages), + hkdf_expand_label(Secret, Label, + Hash, ssl_cipher:hash_size(Algo), Algo). + +-spec hkdf_expand_label(Secret::binary(), Label0::binary(), + Context::binary(), Length::integer(), + Algo::ssl_cipher_format:hash()) -> KeyingMaterial::binary(). +hkdf_expand_label(Secret, Label0, Context, Length, Algo) -> + %% struct { + %% uint16 length = Length; + %% opaque label<7..255> = "tls13 " + Label; + %% opaque context<0..255> = Context; + %% } HkdfLabel; + Content = << <<"tls13">>/binary, Label0/binary, Context/binary>>, + Len = size(Content), + HkdfLabel = <<?UINT16(Len), Content/binary>>, + hkdf_expand(Secret, HkdfLabel, Length, Algo). + +-spec hkdf_extract(MacAlg::ssl_cipher_format:hash(), Salt::binary(), + KeyingMaterial::binary()) -> PseudoRandKey::binary(). + +hkdf_extract(MacAlg, Salt, KeyingMaterial) -> + hmac_hash(MacAlg, Salt, KeyingMaterial). + + +-spec hkdf_expand(PseudoRandKey::binary(), ContextInfo::binary(), + Length::integer(), Algo::ssl_cipher_format:hash()) -> KeyingMaterial::binary(). + +hkdf_expand(PseudoRandKey, ContextInfo, Length, Algo) -> + Iterations = erlang:ceil(Length / ssl_cipher:hash_size(Algo)), + hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, 1, Iterations, <<>>, <<>>). +%% TLS 1.3 --------------------------------------------------- + +%% TLS 1.0 -1.2 --------------------------------------------------- -spec master_secret(integer(), binary(), binary(), binary()) -> binary(). master_secret(PrfAlgo, PreMasterSecret, ClientRandom, ServerRandom) -> @@ -56,9 +101,10 @@ master_secret(PrfAlgo, PreMasterSecret, ClientRandom, ServerRandom) -> prf(PrfAlgo, PreMasterSecret, <<"master secret">>, [ClientRandom, ServerRandom], 48). +%% TLS 1.0 -1.2 --------------------------------------------------- -spec finished(client | server, integer(), integer(), binary(), [binary()]) -> binary(). - +%% TLS 1.0 -1.1 --------------------------------------------------- finished(Role, Version, PrfAlgo, MasterSecret, Handshake) when Version == 1; Version == 2; PrfAlgo == ?MD5SHA -> %% RFC 2246 & 4346 - 7.4.9. Finished @@ -72,7 +118,9 @@ finished(Role, Version, PrfAlgo, MasterSecret, Handshake) MD5 = crypto:hash(md5, Handshake), SHA = crypto:hash(sha, Handshake), prf(?MD5SHA, MasterSecret, finished_label(Role), [MD5, SHA], 12); +%% TLS 1.0 -1.1 --------------------------------------------------- +%% TLS 1.2 --------------------------------------------------- finished(Role, Version, PrfAlgo, MasterSecret, Handshake) when Version == 3 -> %% RFC 5246 - 7.4.9. Finished @@ -84,21 +132,28 @@ finished(Role, Version, PrfAlgo, MasterSecret, Handshake) %% PRF(master_secret, finished_label, Hash(handshake_messages)) [0..11]; Hash = crypto:hash(mac_algo(PrfAlgo), Handshake), prf(PrfAlgo, MasterSecret, finished_label(Role), Hash, 12). +%% TLS 1.2 --------------------------------------------------- + +%% TODO 1.3 finished -spec certificate_verify(md5sha | sha, integer(), [binary()]) -> binary(). +%% TLS 1.0 -1.1 --------------------------------------------------- certificate_verify(md5sha, _Version, Handshake) -> MD5 = crypto:hash(md5, Handshake), SHA = crypto:hash(sha, Handshake), <<MD5/binary, SHA/binary>>; +%% TLS 1.0 -1.1 --------------------------------------------------- +%% TLS 1.2 --------------------------------------------------- certificate_verify(HashAlgo, _Version, Handshake) -> crypto:hash(HashAlgo, Handshake). +%% TLS 1.2 --------------------------------------------------- -spec setup_keys(integer(), integer(), binary(), binary(), binary(), integer(), integer(), integer()) -> {binary(), binary(), binary(), binary(), binary(), binary()}. - +%% TLS v1.0 --------------------------------------------------- setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize, KeyMatLen, IVSize) when Version == 1 -> @@ -123,8 +178,9 @@ setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize ClientIV:IVSize/binary, ServerIV:IVSize/binary>> = KeyBlock, {ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey, ServerWriteKey, ClientIV, ServerIV}; +%% TLS v1.0 --------------------------------------------------- -%% TLS v1.1 +%% TLS v1.1 --------------------------------------------------- setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize, KeyMatLen, IVSize) when Version == 2 -> @@ -150,11 +206,12 @@ setup_keys(Version, _PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize ClientIV:IVSize/binary, ServerIV:IVSize/binary>> = KeyBlock, {ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey, ServerWriteKey, ClientIV, ServerIV}; +%% TLS v1.1 --------------------------------------------------- -%% TLS v1.2 +%% TLS v1.2 --------------------------------------------------- setup_keys(Version, PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize, KeyMatLen, IVSize) - when Version == 3 -> + when Version == 3; Version == 4 -> %% RFC 5246 - 6.3. Key calculation %% key_block = PRF(SecurityParameters.master_secret, %% "key expansion", @@ -176,8 +233,10 @@ setup_keys(Version, PrfAlgo, MasterSecret, ServerRandom, ClientRandom, HashSize, ClientIV:IVSize/binary, ServerIV:IVSize/binary>> = KeyBlock, {ClientWriteMacSecret, ServerWriteMacSecret, ClientWriteKey, ServerWriteKey, ClientIV, ServerIV}. +%% TLS v1.2 --------------------------------------------------- --spec mac_hash(integer(), binary(), integer(), integer(), tls_record:tls_version(), +%% TLS 1.0 -1.2 --------------------------------------------------- +-spec mac_hash(integer() | atom(), binary(), integer(), integer(), tls_record:tls_version(), integer(), binary()) -> binary(). mac_hash(Method, Mac_write_secret, Seq_num, Type, {Major, Minor}, @@ -191,8 +250,11 @@ mac_hash(Method, Mac_write_secret, Seq_num, Type, {Major, Minor}, ?BYTE(Major), ?BYTE(Minor), ?UINT16(Length)>>, Fragment]), Mac. +%% TLS 1.0 -1.2 --------------------------------------------------- + +%% TODO 1.3 same as above? --spec suites(1|2|3) -> [ssl_cipher_format:cipher_suite()]. +-spec suites(1|2|3|4) -> [ssl_cipher_format:cipher_suite()]. suites(Minor) when Minor == 1; Minor == 2 -> [ @@ -244,8 +306,19 @@ suites(3) -> %% ?TLS_DH_DSS_WITH_AES_256_GCM_SHA384, %% ?TLS_DH_RSA_WITH_AES_128_GCM_SHA256, %% ?TLS_DH_DSS_WITH_AES_128_GCM_SHA256 - ] ++ suites(2). - + ] ++ suites(2); + +suites(4) -> + [?TLS_AES_256_GCM_SHA384, + ?TLS_AES_128_GCM_SHA256, + ?TLS_CHACHA20_POLY1305_SHA256 + %% Not supported + %% ?TLS_AES_128_CCM_SHA256, + %% ?TLS_AES_128_CCM_8_SHA256 + ] ++ suites(3). + +signature_algs({3, 4}, HashSigns) -> + signature_algs({3, 3}, HashSigns); signature_algs({3, 3}, HashSigns) -> CryptoSupports = crypto:supports(), Hashes = proplists:get_value(hashs, CryptoSupports), @@ -273,6 +346,8 @@ signature_algs({3, 3}, HashSigns) -> end, [], HashSigns), lists:reverse(Supported). +default_signature_algs({3, 4} = Version) -> + default_signature_schemes(Version); default_signature_algs({3, 3} = Version) -> Default = [%% SHA2 {sha512, ecdsa}, @@ -291,15 +366,81 @@ default_signature_algs({3, 3} = Version) -> default_signature_algs(_) -> undefined. + +signature_schemes(Version, SignatureSchemes) when is_tuple(Version) + andalso Version >= {3, 3} -> + CryptoSupports = crypto:supports(), + Hashes = proplists:get_value(hashs, CryptoSupports), + PubKeys = proplists:get_value(public_keys, CryptoSupports), + Curves = proplists:get_value(curves, CryptoSupports), + Fun = fun (Scheme, Acc) -> + {Hash0, Sign0, Curve} = + ssl_cipher:scheme_to_components(Scheme), + Sign = case Sign0 of + rsa_pkcs1 -> rsa; + S -> S + end, + Hash = case Hash0 of + sha1 -> sha; + H -> H + end, + case proplists:get_bool(Sign, PubKeys) + andalso proplists:get_bool(Hash, Hashes) + andalso (Curve =:= undefined orelse + proplists:get_bool(Curve, Curves)) + andalso is_pair(Hash, Sign, Hashes) + of + true -> + [Scheme | Acc]; + false -> + Acc + end + end, + Supported = lists:foldl(Fun, [], SignatureSchemes), + lists:reverse(Supported); +signature_schemes(_, _) -> + []. + +default_signature_schemes(Version) -> + Default = [ + rsa_pkcs1_sha256, + rsa_pkcs1_sha384, + rsa_pkcs1_sha512, + ecdsa_secp256r1_sha256, + ecdsa_secp384r1_sha384, + ecdsa_secp521r1_sha512, + rsa_pss_rsae_sha256, + rsa_pss_rsae_sha384, + rsa_pss_rsae_sha512, + %% ed25519, + %% ed448, + rsa_pss_pss_sha256, + rsa_pss_pss_sha384, + rsa_pss_pss_sha512, + rsa_pkcs1_sha1, + ecdsa_sha1 + ], + signature_schemes(Version, Default). + + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- +hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, N, N, Prev, Acc) -> + Keyingmaterial = hmac_hash(Algo, PseudoRandKey, <<Prev/binary, ContextInfo/binary, ?BYTE(N)>>), + binary:part(<<Acc/binary, Keyingmaterial/binary>>, {0, Length}); +hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, M, N, Prev, Acc) -> + Keyingmaterial = hmac_hash(Algo, PseudoRandKey, <<Prev/binary, ContextInfo/binary, ?BYTE(M)>>), + hkdf_expand(Algo, PseudoRandKey, ContextInfo, Length, M + 1, N, Keyingmaterial, <<Acc/binary, Keyingmaterial/binary>>). + %%%% HMAC and the Pseudorandom Functions RFC 2246 & 4346 - 5.%%%% hmac_hash(?NULL, _, _) -> <<>>; hmac_hash(Alg, Key, Value) -> crypto:hmac(mac_algo(Alg), Key, Value). +mac_algo(Alg) when is_atom(Alg) -> + Alg; mac_algo(?MD5) -> md5; mac_algo(?SHA) -> sha; mac_algo(?SHA256) -> sha256; @@ -395,6 +536,7 @@ ecc_curves(all) -> sect239k1,sect233k1,sect233r1,secp224k1,secp224r1, sect193r1,sect193r2,secp192k1,secp192r1,sect163k1, sect163r1,sect163r2,secp160k1,secp160r1,secp160r2]; + ecc_curves(Minor) -> TLSCurves = ecc_curves(all), ecc_curves(Minor, TLSCurves). @@ -409,6 +551,53 @@ ecc_curves(_Minor, TLSCurves) -> end end, [], TLSCurves). +-spec groups(4 | all | default) -> [group()]. +groups(all) -> + [secp256r1, + secp384r1, + secp521r1, + ffdhe2048, + ffdhe3072, + ffdhe4096, + ffdhe6144, + ffdhe8192]; +groups(default) -> + [secp256r1, + secp384r1, + secp521r1, + ffdhe2048]; +groups(Minor) -> + TLSGroups = groups(all), + groups(Minor, TLSGroups). +%% +-spec groups(4, [group()]) -> [group()]. +groups(_Minor, TLSGroups) -> + %% TODO: Adding FFDHE groups to crypto? + CryptoGroups = crypto:ec_curves() ++ [ffdhe2048,ffdhe3072,ffdhe4096,ffdhe6144,ffdhe8192], + lists:filter(fun(Group) -> proplists:get_bool(Group, CryptoGroups) end, TLSGroups). + +default_groups(Minor) -> + TLSGroups = groups(default), + groups(Minor, TLSGroups). + +group_to_enum(secp256r1) -> 23; +group_to_enum(secp384r1) -> 24; +group_to_enum(secp521r1) -> 25; +group_to_enum(ffdhe2048) -> 256; +group_to_enum(ffdhe3072) -> 257; +group_to_enum(ffdhe4096) -> 258; +group_to_enum(ffdhe6144) -> 259; +group_to_enum(ffdhe8192) -> 260. + +enum_to_group(23) -> secp256r1; +enum_to_group(24) -> secp384r1; +enum_to_group(25) -> secp521r1; +enum_to_group(256) -> ffdhe2048; +enum_to_group(257) -> ffdhe3072; +enum_to_group(258) -> ffdhe4096; +enum_to_group(259) -> ffdhe6144; +enum_to_group(260) -> ffdhe8192; +enum_to_group(_) -> undefined. %% ECC curves from draft-ietf-tls-ecc-12.txt (Oct. 17, 2005) oid_to_enum(?sect163k1) -> 1; |