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author | Ingela Anderton Andin <[email protected]> | 2018-11-12 09:50:36 +0100 |
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committer | Ingela Anderton Andin <[email protected]> | 2018-11-12 09:50:36 +0100 |
commit | 7f6e0bc237bb6e64e3d02bf690c788d71b9cb4ce (patch) | |
tree | 6ffc4c1399f026fdd60b509ffe2be86664331dd4 /lib/ssl | |
parent | 1fef584a05ed7980967fad0ce90638c2ae787cfa (diff) | |
parent | a1c9c76770aeffbe78674b68ecf0dda511cf44cf (diff) | |
download | otp-7f6e0bc237bb6e64e3d02bf690c788d71b9cb4ce.tar.gz otp-7f6e0bc237bb6e64e3d02bf690c788d71b9cb4ce.tar.bz2 otp-7f6e0bc237bb6e64e3d02bf690c788d71b9cb4ce.zip |
Merge branch 'ingela/ssl/key-derive/OTP-15374'
* ingela/ssl/key-derive/OTP-15374:
ssl: Add key derivation functions for TLS-1.3
Diffstat (limited to 'lib/ssl')
-rw-r--r-- | lib/ssl/src/ssl_cipher.erl | 48 | ||||
-rw-r--r-- | lib/ssl/src/tls_v1.erl | 78 | ||||
-rw-r--r-- | lib/ssl/test/Makefile | 1 | ||||
-rw-r--r-- | lib/ssl/test/ssl_rfc_5869_SUITE.erl | 316 |
4 files changed, 412 insertions, 31 deletions
diff --git a/lib/ssl/src/ssl_cipher.erl b/lib/ssl/src/ssl_cipher.erl index e12faba824..ff3e0d9c90 100644 --- a/lib/ssl/src/ssl_cipher.erl +++ b/lib/ssl/src/ssl_cipher.erl @@ -44,7 +44,7 @@ hash_algorithm/1, sign_algorithm/1, is_acceptable_hash/2, is_fallback/1, random_bytes/1, calc_mac_hash/4, is_stream_ciphersuite/1, signature_scheme/1, - scheme_to_components/1]). + scheme_to_components/1, hash_size/1]). -compile(inline). @@ -651,6 +651,29 @@ is_stream_ciphersuite(#{cipher := rc4_128}) -> true; is_stream_ciphersuite(_) -> false. + +-spec hash_size(atom()) -> integer(). +hash_size(null) -> + 0; +%% The AEAD MAC hash size is not used in the context +%% of calculating the master secret. See RFC 5246 Section 6.2.3.3. +hash_size(aead) -> + 0; +hash_size(md5) -> + 16; +hash_size(sha) -> + 20; +%% Uncomment when adding cipher suite that needs it +%hash_size(sha224) -> +% 28; +hash_size(sha256) -> + 32; +hash_size(sha384) -> + 48. +%% Uncomment when adding cipher suite that needs it +%hash_size(sha512) -> +% 64. + %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- @@ -861,29 +884,6 @@ scheme_to_components(rsa_pss_pss_sha512) -> {sha512, rsa_pss_pss, undefined}; scheme_to_components(rsa_pkcs1_sha1) -> {sha1, rsa_pkcs1, undefined}; scheme_to_components(ecdsa_sha1) -> {sha1, ecdsa, undefined}. - - -hash_size(null) -> - 0; -%% The AEAD MAC hash size is not used in the context -%% of calculating the master secret. See RFC 5246 Section 6.2.3.3. -hash_size(aead) -> - 0; -hash_size(md5) -> - 16; -hash_size(sha) -> - 20; -%% Uncomment when adding cipher suite that needs it -%hash_size(sha224) -> -% 28; -hash_size(sha256) -> - 32; -hash_size(sha384) -> - 48. -%% Uncomment when adding cipher suite that needs it -%hash_size(sha512) -> -% 64. - %% RFC 5246: 6.2.3.2. CBC Block Cipher %% %% Implementation note: Canvel et al. [CBCTIME] have demonstrated a diff --git a/lib/ssl/src/tls_v1.erl b/lib/ssl/src/tls_v1.erl index e7218c8c8a..68ba598612 100644 --- a/lib/ssl/src/tls_v1.erl +++ b/lib/ssl/src/tls_v1.erl @@ -36,6 +36,8 @@ default_signature_schemes/1, signature_schemes/2, groups/1, groups/2, group_to_enum/1, enum_to_group/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 | sect283k1 | sect283r1 | brainpoolP256r1 | secp256k1 | secp256r1 | @@ -52,6 +54,44 @@ %% 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) -> @@ -61,9 +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 @@ -77,9 +118,11 @@ 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; Version == 4 -> + when Version == 3 -> %% RFC 5246 - 7.4.9. Finished %% struct { %% opaque verify_data[12]; @@ -89,22 +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 -> @@ -129,8 +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 -> @@ -156,8 +206,9 @@ 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; Version == 4 -> @@ -182,8 +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}, @@ -197,6 +250,9 @@ 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|4) -> [ssl_cipher_format:cipher_suite()]. @@ -345,7 +401,6 @@ signature_schemes(Version, SignatureSchemes) when is_tuple(Version) signature_schemes(_, _) -> []. - default_signature_schemes(Version) -> Default = [ rsa_pkcs1_sha256, @@ -371,12 +426,21 @@ default_signature_schemes(Version) -> %%-------------------------------------------------------------------- %%% 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; diff --git a/lib/ssl/test/Makefile b/lib/ssl/test/Makefile index d5ba105478..a4adc7561b 100644 --- a/lib/ssl/test/Makefile +++ b/lib/ssl/test/Makefile @@ -62,6 +62,7 @@ MODULES = \ ssl_upgrade_SUITE\ ssl_sni_SUITE \ ssl_eqc_SUITE \ + ssl_rfc_5869_SUITE \ make_certs\ x509_test diff --git a/lib/ssl/test/ssl_rfc_5869_SUITE.erl b/lib/ssl/test/ssl_rfc_5869_SUITE.erl new file mode 100644 index 0000000000..8b2d1c2082 --- /dev/null +++ b/lib/ssl/test/ssl_rfc_5869_SUITE.erl @@ -0,0 +1,316 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2018-2018. 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(ssl_rfc_5869_SUITE). + +%% Note: This directive should only be used in test suites. +-compile(export_all). + +-include_lib("common_test/include/ct.hrl"). + +%%-------------------------------------------------------------------- +%% Common Test interface functions ----------------------------------- +%%-------------------------------------------------------------------- +all() -> + [sha_256_basic, + sha_256_long, + sha_256_no_salt, + sha_basic, + sha_long, + sha_no_salt, + sha_default_salt + ]. + +%%-------------------------------------------------------------------- +init_per_suite(Config) -> + catch crypto:stop(), + try crypto:start() of + ok -> + Config + catch _:_ -> + {skip, "Crypto did not start"} + end. + +end_per_suite(_Config) -> + application:stop(crypto). + +%%-------------------------------------------------------------------- +init_per_testcase(_TestCase, Config) -> + ct:timetrap({seconds, 5}), + Config. + +end_per_testcase(_TestCase, Config) -> + Config. + +%%-------------------------------------------------------------------- +%% Test Cases -------------------------------------------------------- +%%-------------------------------------------------------------------- + +sha_256_basic() -> + [{doc, "Basic test case with SHA-256"}]. +sha_256_basic(Config) when is_list(Config) -> + %% Hash = SHA-256 + %% IKM = 0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b (22 octets) + %% salt = 0x000102030405060708090a0b0c (13 octets) + %% info = 0xf0f1f2f3f4f5f6f7f8f9 (10 octets) + %% L = 42 + %% PRK = 0x077709362c2e32df0ddc3f0dc47bba63 + %% 90b6c73bb50f9c3122ec844ad7c2b3e5 (32 octets) + %% OKM = 0x3cb25f25faacd57a90434f64d0362f2a + %% 2d2d0a90cf1a5a4c5db02d56ecc4c5bf + %% 34007208d5b887185865 (42 octets) + IKM = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"), + Salt = hexstr2bin("000102030405060708090a0b0c"), + Info = hexstr2bin("f0f1f2f3f4f5f6f7f8f9"), + PRK = hexstr2bin("077709362c2e32df0ddc3f0dc47bba63" + "90b6c73bb50f9c3122ec844ad7c2b3e5"), + OKM = hexstr2bin("3cb25f25faacd57a90434f64d0362f2a" + "2d2d0a90cf1a5a4c5db02d56ecc4c5bf" + "34007208d5b887185865"), + hkdf_test(sha256, Salt, IKM, PRK, Info, 42, OKM). + +sha_256_long() -> + [{doc, "Test with SHA-256 and longer inputs/outputs"}]. +sha_256_long(Config) when is_list(Config) -> + %% Hash = SHA-256 + %% IKM = 0x000102030405060708090a0b0c0d0e0f + %% 101112131415161718191a1b1c1d1e1f + %% 202122232425262728292a2b2c2d2e2f + %% 303132333435363738393a3b3c3d3e3f + %% 404142434445464748494a4b4c4d4e4f (80 octets) + %% salt = 0x606162636465666768696a6b6c6d6e6f + %% 707172737475767778797a7b7c7d7e7f + %% 808182838485868788898a8b8c8d8e8f + %% 909192939495969798999a9b9c9d9e9f + %% a0a1a2a3a4a5a6a7a8a9aaabacadaeaf (80 octets) + %% info = 0xb0b1b2b3b4b5b6b7b8b9babbbcbdbebf + %% c0c1c2c3c4c5c6c7c8c9cacbcccdcecf + %% d0d1d2d3d4d5d6d7d8d9dadbdcdddedf + %% e0e1e2e3e4e5e6e7e8e9eaebecedeeef + %% f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff (80 octets) + %% L = 82 + + %% PRK = 0x06a6b88c5853361a06104c9ceb35b45c + %% ef760014904671014a193f40c15fc244 (32 octets) + %% OKM = 0xb11e398dc80327a1c8e7f78c596a4934 + %% 4f012eda2d4efad8a050cc4c19afa97c + %% 59045a99cac7827271cb41c65e590e09 + %% da3275600c2f09b8367793a9aca3db71 + %% cc30c58179ec3e87c14c01d5c1f3434f + %% 1d87 (82 octets) + IKM = hexstr2bin("000102030405060708090a0b0c0d0e0f" + "101112131415161718191a1b1c1d1e1f" + "202122232425262728292a2b2c2d2e2f" + "303132333435363738393a3b3c3d3e3f" + "404142434445464748494a4b4c4d4e4f" + ), + Salt = hexstr2bin("606162636465666768696a6b6c6d6e6f" + "707172737475767778797a7b7c7d7e7f" + "808182838485868788898a8b8c8d8e8f" + "909192939495969798999a9b9c9d9e9f" + "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf" + ), + Info = hexstr2bin("b0b1b2b3b4b5b6b7b8b9babbbcbdbebf" + "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf" + "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf" + "e0e1e2e3e4e5e6e7e8e9eaebecedeeef" + "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff" + ), + PRK = hexstr2bin("06a6b88c5853361a06104c9ceb35b45c" + "ef760014904671014a193f40c15fc244"), + OKM = hexstr2bin("b11e398dc80327a1c8e7f78c596a4934" + "4f012eda2d4efad8a050cc4c19afa97c" + "59045a99cac7827271cb41c65e590e09" + "da3275600c2f09b8367793a9aca3db71" + "cc30c58179ec3e87c14c01d5c1f3434f" + "1d87" + ), + hkdf_test(sha256, Salt, IKM, PRK, Info, 82, OKM). +sha_256_no_salt() -> + [{doc, "Test with SHA-256 and zero-length salt/info"}]. +sha_256_no_salt(Config) when is_list(Config) -> + %% Hash = SHA-256 + %% IKM = 0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b (22 octets) + %% salt = (0 octets) + %% info = (0 octets) + %% L = 42 + + %% PRK = 0x19ef24a32c717b167f33a91d6f648bdf + %% 96596776afdb6377ac434c1c293ccb04 (32 octets) + %% OKM = 0x8da4e775a563c18f715f802a063c5a31 + %% b8a11f5c5ee1879ec3454e5f3c738d2d + %% 9d201395faa4b61a96c8 (42 octets) + IKM = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"), + Salt = <<>>, + Info = <<>>, + PRK = hexstr2bin("19ef24a32c717b167f33a91d6f648bdf" + "96596776afdb6377ac434c1c293ccb04"), + OKM = hexstr2bin("8da4e775a563c18f715f802a063c5a31" + "b8a11f5c5ee1879ec3454e5f3c738d2d" + "9d201395faa4b61a96c8"), + hkdf_test(sha256, Salt, IKM, PRK, Info, 42, OKM). + +sha_basic() -> + [{doc, " Basic test case with SHA-1"}]. +sha_basic(Config) when is_list(Config) -> + %% Hash = SHA-1 + %% IKM = 0x0b0b0b0b0b0b0b0b0b0b0b (11 octets) + %% salt = 0x000102030405060708090a0b0c (13 octets) + %% info = 0xf0f1f2f3f4f5f6f7f8f9 (10 octets) + %% L = 42 + + %% PRK = 0x9b6c18c432a7bf8f0e71c8eb88f4b30baa2ba243 (20 octets) + %% OKM = 0x085a01ea1b10f36933068b56efa5ad81 + %% a4f14b822f5b091568a9cdd4f155fda2 + %% c22e422478d305f3f896 (42 octets) + IKM = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"), + Salt = hexstr2bin("000102030405060708090a0b0c"), + Info = hexstr2bin("f0f1f2f3f4f5f6f7f8f9"), + PRK = hexstr2bin("077709362c2e32df0ddc3f0dc47bba63" + "90b6c73bb50f9c3122ec844ad7c2b3e5"), + OKM = hexstr2bin("3cb25f25faacd57a90434f64d0362f2a" + "2d2d0a90cf1a5a4c5db02d56ecc4c5bf" + "34007208d5b887185865"), + hkdf_test(sha256, Salt, IKM, PRK, Info, 42, OKM). + +sha_long() -> + [{doc, "Test with SHA-1 and longer inputs/outputs"}]. +sha_long(Config) when is_list(Config) -> + %% Hash = SHA-1 + %% IKM = 0x000102030405060708090a0b0c0d0e0f + %% 101112131415161718191a1b1c1d1e1f + %% 202122232425262728292a2b2c2d2e2f + %% 303132333435363738393a3b3c3d3e3f + %% 404142434445464748494a4b4c4d4e4f (80 octets) + %% salt = 0x606162636465666768696a6b6c6d6e6f + %% 707172737475767778797a7b7c7d7e7f + %% 808182838485868788898a8b8c8d8e8f + %% 909192939495969798999a9b9c9d9e9f + %% a0a1a2a3a4a5a6a7a8a9aaabacadaeaf (80 octets) + %% info = 0xb0b1b2b3b4b5b6b7b8b9babbbcbdbebf + %% c0c1c2c3c4c5c6c7c8c9cacbcccdcecf + %% d0d1d2d3d4d5d6d7d8d9dadbdcdddedf + %% e0e1e2e3e4e5e6e7e8e9eaebecedeeef + %% f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff (80 octets) + %% L = 82 + + %% PRK = 0x8adae09a2a307059478d309b26c4115a224cfaf6 (20 octets) + %% OKM = 0x0bd770a74d1160f7c9f12cd5912a06eb + %% ff6adcae899d92191fe4305673ba2ffe + %% 8fa3f1a4e5ad79f3f334b3b202b2173c + %% 486ea37ce3d397ed034c7f9dfeb15c5e + %% 927336d0441f4c4300e2cff0d0900b52 + %% d3b4 (82 octets) + IKM = hexstr2bin("000102030405060708090a0b0c0d0e0f" + "101112131415161718191a1b1c1d1e1f" + "202122232425262728292a2b2c2d2e2f" + "303132333435363738393a3b3c3d3e3f" + "404142434445464748494a4b4c4d4e4f" + ), + Salt = hexstr2bin("606162636465666768696a6b6c6d6e6f" + "707172737475767778797a7b7c7d7e7f" + "808182838485868788898a8b8c8d8e8f" + "909192939495969798999a9b9c9d9e9f" + "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf" + ), + Info = hexstr2bin("b0b1b2b3b4b5b6b7b8b9babbbcbdbebf" + "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf" + "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf" + "e0e1e2e3e4e5e6e7e8e9eaebecedeeef" + "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff" + ), + PRK = hexstr2bin("8adae09a2a307059478d309b26c4115a224cfaf6"), + OKM = hexstr2bin("0bd770a74d1160f7c9f12cd5912a06eb" + "ff6adcae899d92191fe4305673ba2ffe" + "8fa3f1a4e5ad79f3f334b3b202b2173c" + "486ea37ce3d397ed034c7f9dfeb15c5e" + "927336d0441f4c4300e2cff0d0900b52" + "d3b4" + ), + hkdf_test(sha, Salt, IKM, PRK, Info, 82, OKM). + +sha_no_salt() -> + [{doc, "Test with SHA-1 and zero-length salt/info"}]. +sha_no_salt(Config) when is_list(Config) -> + %% Hash = SHA-1 + %% IKM = 0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b (22 octets) + %% salt = (0 octets) + %% info = (0 octets) + %% L = 42 + + %% PRK = 0xda8c8a73c7fa77288ec6f5e7c297786aa0d32d01 (20 octets) + %% OKM = 0x0ac1af7002b3d761d1e55298da9d0506 + %% b9ae52057220a306e07b6b87e8df21d0 + %% ea00033de03984d34918 (42 octets) + IKM = hexstr2bin("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"), + Salt = <<>>, + Info = <<>>, + PRK = hexstr2bin("da8c8a73c7fa77288ec6f5e7c297786aa0d32d01"), + OKM = hexstr2bin("0ac1af7002b3d761d1e55298da9d0506" + "b9ae52057220a306e07b6b87e8df21d0" + "ea00033de03984d34918"), + hkdf_test(sha, Salt, IKM, PRK, Info, 42, OKM). + + +sha_default_salt() -> + [{doc, "Test with SHA-1, salt not provided (defaults to HashLen zero octets), + zero-length info"}]. +sha_default_salt(Config) when is_list(Config) -> + %% Hash = SHA-1 + %% IKM = 0x0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c (22 octets) + %% salt = not provided (defaults to HashLen zero octets) + %% info = (0 octets) + %% L = 42 + + %% PRK = 0x2adccada18779e7c2077ad2eb19d3f3e731385dd (20 octets) + %% OKM = 0x2c91117204d745f3500d636a62f64f0a + %% b3bae548aa53d423b0d1f27ebba6f5e5 + %% 673a081d70cce7acfc48 (42 octets) + IKM = hexstr2bin("0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c"), + Salt = binary:copy(<<0>>, 20), + Info = <<>>, + PRK = hexstr2bin("2adccada18779e7c2077ad2eb19d3f3e731385dd"), + OKM = hexstr2bin("2c91117204d745f3500d636a62f64f0a" + "b3bae548aa53d423b0d1f27ebba6f5e5" + "673a081d70cce7acfc48"), + hkdf_test(sha, Salt, IKM, PRK, Info, 42, OKM). + +hkdf_test(HashAlg, Salt, KeyingMaterial, PsedoRandKey, ContextInfo, Length, Key) -> + PsedoRandKey = tls_v1:hkdf_extract(HashAlg, Salt, KeyingMaterial), + Key = tls_v1:hkdf_expand(PsedoRandKey, ContextInfo, Length, HashAlg). + +hexstr2bin(S) when is_binary(S) -> + list_to_binary(hexstr2list(binary_to_list(S))); +hexstr2bin(S) -> + list_to_binary(hexstr2list(S)). + +hexstr2list([$ |T]) -> + hexstr2list(T); +hexstr2list([X,Y|T]) -> + [mkint(X)*16 + mkint(Y) | hexstr2list(T)]; +hexstr2list([]) -> + []. +mkint(C) when $0 =< C, C =< $9 -> + C - $0; +mkint(C) when $A =< C, C =< $F -> + C - $A + 10; +mkint(C) when $a =< C, C =< $f -> + C - $a + 10. |