diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/crypto/c_src/crypto.c | 148 | ||||
-rw-r--r-- | lib/crypto/doc/src/crypto.xml | 22 | ||||
-rw-r--r-- | lib/crypto/src/crypto.erl | 38 | ||||
-rw-r--r-- | lib/crypto/test/crypto_SUITE.erl | 168 | ||||
-rw-r--r-- | lib/ssh/doc/src/ssh_app.xml | 1 | ||||
-rw-r--r-- | lib/ssh/src/ssh.hrl | 3 | ||||
-rw-r--r-- | lib/ssh/src/ssh_connection_handler.erl | 15 | ||||
-rw-r--r-- | lib/ssh/src/ssh_transport.erl | 177 | ||||
-rw-r--r-- | lib/ssh/test/ssh_bench_SUITE.erl | 33 |
9 files changed, 530 insertions, 75 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index 72aa44e7db..d409ea7dcf 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -178,11 +178,19 @@ #if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,1,0) # ifndef HAS_LIBRESSL +# define HAVE_CHACHA20 # define HAVE_CHACHA20_POLY1305 # define HAVE_RSA_OAEP_MD # endif #endif +// OPENSSL_VERSION_NUMBER >= 1.1.1-pre8 +#if OPENSSL_VERSION_NUMBER >= (PACKED_OPENSSL_VERSION_PLAIN(1,1,1)-7) +# ifndef HAS_LIBRESSL +# define HAVE_POLY1305 +# endif +#endif + #if OPENSSL_VERSION_NUMBER <= PACKED_OPENSSL_VERSION(0,9,8,'l') # define HAVE_ECB_IVEC_BUG #endif @@ -524,6 +532,11 @@ static ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_N static ERL_NIF_TERM chacha20_poly1305_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM chacha20_poly1305_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM chacha20_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM chacha20_stream_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); + +static ERL_NIF_TERM poly1305_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); + static ERL_NIF_TERM engine_by_id_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM engine_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM engine_finish_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); @@ -614,6 +627,12 @@ static ErlNifFunc nif_funcs[] = { {"chacha20_poly1305_encrypt", 4, chacha20_poly1305_encrypt}, {"chacha20_poly1305_decrypt", 5, chacha20_poly1305_decrypt}, + {"chacha20_stream_init", 2, chacha20_stream_init}, + {"chacha20_stream_encrypt", 2, chacha20_stream_crypt}, + {"chacha20_stream_decrypt", 2, chacha20_stream_crypt}, + + {"poly1305_nif", 2, poly1305_nif}, + {"engine_by_id_nif", 1, engine_by_id_nif}, {"engine_init_nif", 1, engine_init_nif}, {"engine_finish_nif", 1, engine_finish_nif}, @@ -1246,7 +1265,7 @@ static ERL_NIF_TERM algo_pubkey[11]; /* increase when extending the list */ static int algo_cipher_cnt, algo_cipher_fips_cnt; static ERL_NIF_TERM algo_cipher[24]; /* increase when extending the list */ static int algo_mac_cnt, algo_mac_fips_cnt; -static ERL_NIF_TERM algo_mac[2]; /* increase when extending the list */ +static ERL_NIF_TERM algo_mac[3]; /* increase when extending the list */ static int algo_curve_cnt, algo_curve_fips_cnt; static ERL_NIF_TERM algo_curve[87]; /* increase when extending the list */ @@ -1334,13 +1353,19 @@ static void init_algorithms_types(ErlNifEnv* env) #if defined(HAVE_CHACHA20_POLY1305) algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"chacha20_poly1305"); #endif - +#if defined(HAVE_CHACHA20) + algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"chacha20"); +#endif + // Validated algorithms first algo_mac_cnt = 0; algo_mac[algo_mac_cnt++] = enif_make_atom(env,"hmac"); #ifdef HAVE_CMAC algo_mac[algo_mac_cnt++] = enif_make_atom(env,"cmac"); #endif +#ifdef HAVE_POLY1305 + algo_mac[algo_mac_cnt++] = enif_make_atom(env,"poly1305"); +#endif // Non-validated algorithms follow algo_mac_fips_cnt = algo_mac_cnt; @@ -2082,6 +2107,62 @@ static ERL_NIF_TERM cmac_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[] #endif } +/* For OpenSSL >= 1.1.1 the hmac_nif and cmac_nif could be integrated into poly1305 (with 'type' as parameter) */ +static ERL_NIF_TERM poly1305_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{/* (Key, Text) */ +#ifdef HAVE_POLY1305 + ErlNifBinary key_bin, text, ret_bin; + ERL_NIF_TERM ret = atom_error; + EVP_PKEY *key = NULL; + EVP_MD_CTX *mctx = NULL; + EVP_PKEY_CTX *pctx = NULL; + const EVP_MD *md = NULL; + size_t size; + int type; + + type = EVP_PKEY_POLY1305; + + if (!enif_inspect_binary(env, argv[0], &key_bin) || + !(key_bin.size == 32) ) { + return enif_make_badarg(env); + } + + if (!enif_inspect_binary(env, argv[1], &text) ) { + return enif_make_badarg(env); + } + + key = EVP_PKEY_new_raw_private_key(type, /*engine*/ NULL, key_bin.data, key_bin.size); + + if (!key || + !(mctx = EVP_MD_CTX_new()) || + !EVP_DigestSignInit(mctx, &pctx, md, /*engine*/ NULL, key) || + !EVP_DigestSignUpdate(mctx, text.data, text.size)) { + goto err; + } + + if (!EVP_DigestSignFinal(mctx, NULL, &size) || + !enif_alloc_binary(size, &ret_bin) || + !EVP_DigestSignFinal(mctx, ret_bin.data, &size)) { + goto err; + } + + if ((size != ret_bin.size) && + !enif_realloc_binary(&ret_bin, size)) { + goto err; + } + + ret = enif_make_binary(env, &ret_bin); + + err: + EVP_MD_CTX_free(mctx); + EVP_PKEY_free(key); + return ret; + +#else + return atom_notsup; +#endif +} + static ERL_NIF_TERM block_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) {/* (Type, Key, Ivec, Text, IsEncrypt) or (Type, Key, Text, IsEncrypt) */ struct cipher_type_t *cipherp = NULL; @@ -2666,6 +2747,69 @@ out_err: #endif } + +static ERL_NIF_TERM chacha20_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{/* (Key, IV) */ +#if defined(HAVE_CHACHA20) + ErlNifBinary key_bin, ivec_bin; + struct evp_cipher_ctx *ctx; + const EVP_CIPHER *cipher; + ERL_NIF_TERM ret; + + if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin) + || !enif_inspect_binary(env, argv[1], &ivec_bin) + || key_bin.size != 32 + || ivec_bin.size != 16) { + return enif_make_badarg(env); + } + + cipher = EVP_chacha20(); + + ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx)); + ctx->ctx = EVP_CIPHER_CTX_new(); + + + EVP_CipherInit_ex(ctx->ctx, cipher, NULL, + key_bin.data, ivec_bin.data, 1); + EVP_CIPHER_CTX_set_padding(ctx->ctx, 0); + ret = enif_make_resource(env, ctx); + enif_release_resource(ctx); + return ret; +#else + return enif_raise_exception(env, atom_notsup); +#endif +}; + +static ERL_NIF_TERM chacha20_stream_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{/* (State, Data) */ +#if defined(HAVE_CHACHA20) + struct evp_cipher_ctx *ctx, *new_ctx; + ErlNifBinary data_bin; + ERL_NIF_TERM ret, cipher_term; + unsigned char *out; + int outl = 0; + + if (!enif_get_resource(env, argv[0], evp_cipher_ctx_rtype, (void**)&ctx) + || !enif_inspect_iolist_as_binary(env, argv[1], &data_bin)) { + return enif_make_badarg(env); + } + new_ctx = enif_alloc_resource(evp_cipher_ctx_rtype, sizeof(struct evp_cipher_ctx)); + new_ctx->ctx = EVP_CIPHER_CTX_new(); + EVP_CIPHER_CTX_copy(new_ctx->ctx, ctx->ctx); + out = enif_make_new_binary(env, data_bin.size, &cipher_term); + EVP_CipherUpdate(new_ctx->ctx, out, &outl, data_bin.data, data_bin.size); + ASSERT(outl == data_bin.size); + + ret = enif_make_tuple2(env, enif_make_resource(env, new_ctx), cipher_term); + enif_release_resource(new_ctx); + CONSUME_REDS(env,data_bin); + return ret; +#else + return enif_raise_exception(env, atom_notsup); +#endif +}; + + static ERL_NIF_TERM strong_rand_bytes_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) {/* (Bytes) */ unsigned bytes; diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml index 58da89f0a9..38cc93a476 100644 --- a/lib/crypto/doc/src/crypto.xml +++ b/lib/crypto/doc/src/crypto.xml @@ -155,7 +155,7 @@ <p>The key's password </p> - <code>stream_cipher() = rc4 | aes_ctr </code> + <code>stream_cipher() = rc4 | aes_ctr | chacha20 </code> <code>block_cipher() = aes_cbc | aes_cfb8 | aes_cfb128 | aes_ige256 | blowfish_cbc | blowfish_cfb64 | des_cbc | des_cfb | des3_cbc | des3_cfb | des_ede3 | rc2_cbc </code> @@ -193,9 +193,9 @@ Note that both md4 and md5 are recommended only for compatibility with existing applications. </p> <code> cipher_algorithms() = aes_cbc | aes_cfb8 | aes_cfb128 | aes_ctr | aes_gcm | - aes_ige256 | blowfish_cbc | blowfish_cfb64 | chacha20_poly1305 | des_cbc | + aes_ige256 | blowfish_cbc | blowfish_cfb64 | chacha20 | chacha20_poly1305 | des_cbc | des_cfb | des3_cbc | des3_cfb | des_ede3 | rc2_cbc | rc4 </code> - <code> mac_algorithms() = hmac | cmac</code> + <code> mac_algorithms() = hmac | cmac | poly1305</code> <code> public_key_algorithms() = rsa |dss | ecdsa | dh | ecdh | ec_gf2m</code> <p>Note that ec_gf2m is not strictly a public key algorithm, but a restriction on what curves are supported with ecdsa and ecdh. @@ -598,6 +598,20 @@ </func> <func> + <name>poly1305(Key, Data) -> Mac</name> + <fsummary></fsummary> + <type> + <v>Key = iodata()</v> + <v>Data = iodata()</v> + <v>Mac = binary()</v> + </type> + <desc> + <p>Computes a POLY1305 message authentication code (<c>Mac</c>) from <c>Data</c> using + <c>Key</c> as the authentication key.</p> + </desc> + </func> + + <func> <name>private_decrypt(Type, CipherText, PrivateKey, Padding) -> PlainText</name> <fsummary>Decrypts CipherText using the private Key.</fsummary> <type> @@ -958,7 +972,7 @@ _FloatValue = rand:uniform(). % [0.0; 1.0[</pre> <name>stream_init(Type, Key, IVec) -> State</name> <fsummary></fsummary> <type> - <v>Type = aes_ctr </v> + <v>Type = aes_ctr | chacha20</v> <v>State = opaque() </v> <v>Key = iodata()</v> <v>IVec = binary()</v> diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl index 81ab4e5ea1..f6a785303b 100644 --- a/lib/crypto/src/crypto.erl +++ b/lib/crypto/src/crypto.erl @@ -29,6 +29,7 @@ -export([generate_key/2, generate_key/3, compute_key/4]). -export([hmac/3, hmac/4, hmac_init/2, hmac_update/2, hmac_final/1, hmac_final_n/2]). -export([cmac/3, cmac/4]). +-export([poly1305/2]). -export([exor/2, strong_rand_bytes/1, mod_pow/3]). -export([rand_seed/0, rand_seed_alg/1]). -export([rand_seed_s/0, rand_seed_alg_s/1]). @@ -194,6 +195,11 @@ cmac(Type, Key, Data) -> cmac(Type, Key, Data, MacSize) -> erlang:binary_part(cmac(Type, Key, Data), 0, MacSize). +-spec poly1305(iodata(), iodata()) -> binary(). + +poly1305(Key, Data) -> + poly1305_nif(Key, Data). + %% Ecrypt/decrypt %%% -spec block_encrypt(des_cbc | des_cfb | @@ -309,7 +315,10 @@ next_iv(Type, Data, _Ivec) -> next_iv(Type, Data). stream_init(aes_ctr, Key, Ivec) -> - {aes_ctr, aes_ctr_stream_init(Key, Ivec)}. + {aes_ctr, aes_ctr_stream_init(Key, Ivec)}; +stream_init(chacha20, Key, Ivec) -> + {chacha20, chacha20_stream_init(Key,Ivec)}. + stream_init(rc4, Key) -> {rc4, notsup_to_error(rc4_set_key(Key))}. @@ -1060,9 +1069,12 @@ hmac_final_nif(_Context) -> ?nif_stub. hmac_final_nif(_Context, _MacSize) -> ?nif_stub. %% CMAC - cmac_nif(_Type, _Key, _Data) -> ?nif_stub. +%% POLY1305 +poly1305_nif(_Key, _Data) -> ?nif_stub. + + %% CIPHERS -------------------------------------------------------------------- block_crypt_nif(_Type, _Key, _Ivec, _Text, _IsEncrypt) -> ?nif_stub. @@ -1117,14 +1129,20 @@ do_stream_encrypt({aes_ctr, State0}, Data) -> {{aes_ctr, State}, Cipher}; do_stream_encrypt({rc4, State0}, Data) -> {State, Cipher} = rc4_encrypt_with_state(State0, Data), - {{rc4, State}, Cipher}. + {{rc4, State}, Cipher}; +do_stream_encrypt({chacha20, State0}, Data) -> + {State, Cipher} = chacha20_stream_encrypt(State0, Data), + {{chacha20, State}, Cipher}. do_stream_decrypt({aes_ctr, State0}, Data) -> {State, Text} = aes_ctr_stream_decrypt(State0, Data), {{aes_ctr, State}, Text}; do_stream_decrypt({rc4, State0}, Data) -> {State, Text} = rc4_encrypt_with_state(State0, Data), - {{rc4, State}, Text}. + {{rc4, State}, Text}; +do_stream_decrypt({chacha20, State0}, Data) -> + {State, Cipher} = chacha20_stream_decrypt(State0, Data), + {{chacha20, State}, Cipher}. %% @@ -1148,6 +1166,18 @@ aes_ctr_stream_decrypt(_State, _Cipher) -> ?nif_stub. rc4_set_key(_Key) -> ?nif_stub. rc4_encrypt_with_state(_State, _Data) -> ?nif_stub. +%% +%% CHACHA20 - stream cipher +%% +-type chacha20_state() :: term(). +-spec chacha20_stream_init(iodata(), binary()) -> chacha20_state(). +-spec chacha20_stream_encrypt(chacha20_state(), binary()) -> {chacha20_state(), binary()}. +-spec chacha20_stream_decrypt(chacha20_state(), binary()) -> {chacha20_state(), binary()}. + +chacha20_stream_init(_Key, _IVec) -> ?nif_stub. +chacha20_stream_encrypt(_State, _Data) -> ?nif_stub. +chacha20_stream_decrypt(_State, _Data) -> ?nif_stub. + %% Secure remote password ------------------------------------------------------------------- user_srp_gen_key(Private, Generator, Prime) -> diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl index 1027a8d945..3257dfd373 100644 --- a/lib/crypto/test/crypto_SUITE.erl +++ b/lib/crypto/test/crypto_SUITE.erl @@ -77,6 +77,8 @@ groups() -> {group, aes_ctr}, {group, aes_gcm}, {group, chacha20_poly1305}, + {group, chacha20}, + {group, poly1305}, {group, aes_cbc}]}, {fips, [], [{group, no_md4}, {group, no_md5}, @@ -112,6 +114,7 @@ groups() -> {group, aes_ctr}, {group, aes_gcm}, {group, no_chacha20_poly1305}, + {group, no_chacha20}, {group, aes_cbc}]}, {md4, [], [hash]}, {md5, [], [hash, hmac]}, @@ -157,6 +160,8 @@ groups() -> {aes_ctr, [], [stream]}, {aes_gcm, [], [aead]}, {chacha20_poly1305, [], [aead]}, + {chacha20, [], [stream]}, + {poly1305, [], [poly1305]}, {aes_cbc, [], [block]}, {no_md4, [], [no_support, no_hash]}, {no_md5, [], [no_support, no_hash, no_hmac]}, @@ -170,6 +175,7 @@ groups() -> {no_blowfish_ofb64, [], [no_support, no_block]}, {no_aes_ige256, [], [no_support, no_block]}, {no_chacha20_poly1305, [], [no_support, no_aead]}, + {no_chacha20, [], [no_support, no_stream_ivec]}, {no_rc2_cbc, [], [no_support, no_block]}, {no_rc4, [], [no_support, no_stream]}, {api_errors, [], [api_errors_ecdh]} @@ -356,6 +362,20 @@ cmac(Config) when is_list(Config) -> lists:foreach(fun cmac_check/1, Pairs), lists:foreach(fun cmac_check/1, cmac_iolistify(Pairs)). %%-------------------------------------------------------------------- +poly1305() -> + [{doc, "Test poly1305 function"}]. +poly1305(Config) -> + lists:foreach( + fun({Key, Txt, Expect}) -> + case crypto:poly1305(Key,Txt) of + Expect -> + ok; + Other -> + ct:fail({{crypto, poly1305, [Key, Txt]}, {expected, Expect}, {got, Other}}) + end + end, proplists:get_value(poly1305, Config)). + +%%-------------------------------------------------------------------- block() -> [{doc, "Test block ciphers"}]. block(Config) when is_list(Config) -> @@ -420,6 +440,13 @@ no_stream(Config) when is_list(Config) -> notsup(fun crypto:stream_init/2, [Type, <<"Key">>]). %%-------------------------------------------------------------------- +no_stream_ivec() -> + [{doc, "Test disabled stream ciphers that uses ivec"}]. +no_stream_ivec(Config) when is_list(Config) -> + Type = ?config(type, Config), + notsup(fun crypto:stream_init/3, [Type, <<"Key">>, <<"Ivec">>]). + +%%-------------------------------------------------------------------- aead() -> [{doc, "Test AEAD ciphers"}]. aead(Config) when is_list(Config) -> @@ -757,16 +784,33 @@ stream_cipher({Type, Key, IV, PlainText}) -> ok; Other -> ct:fail({{crypto, stream_decrypt, [State, CipherText]}, {expected, PlainText}, {got, Other}}) + end; +stream_cipher({Type, Key, IV, PlainText, CipherText}) -> + Plain = iolist_to_binary(PlainText), + State = crypto:stream_init(Type, Key, IV), + case crypto:stream_encrypt(State, PlainText) of + {_, CipherText} -> + ok; + {_, Other0} -> + ct:fail({{crypto, stream_encrypt, [State, Type, Key, IV, Plain]}, {expected, CipherText}, {got, Other0}}) + end, + case crypto:stream_decrypt(State, CipherText) of + {_, Plain} -> + ok; + Other1 -> + ct:fail({{crypto, stream_decrypt, [State, CipherText]}, {expected, PlainText}, {got, Other1}}) end. stream_cipher_incment({Type, Key, PlainTexts}) -> State = crypto:stream_init(Type, Key), - stream_cipher_incment(State, State, PlainTexts, [], iolist_to_binary(PlainTexts)); + stream_cipher_incment_loop(State, State, PlainTexts, [], iolist_to_binary(PlainTexts)); stream_cipher_incment({Type, Key, IV, PlainTexts}) -> State = crypto:stream_init(Type, Key, IV), - stream_cipher_incment(State, State, PlainTexts, [], iolist_to_binary(PlainTexts)). + stream_cipher_incment_loop(State, State, PlainTexts, [], iolist_to_binary(PlainTexts)); +stream_cipher_incment({Type, Key, IV, PlainTexts, _CipherText}) -> + stream_cipher_incment({Type, Key, IV, PlainTexts}). -stream_cipher_incment(_State, OrigState, [], Acc, Plain) -> +stream_cipher_incment_loop(_State, OrigState, [], Acc, Plain) -> CipherText = iolist_to_binary(lists:reverse(Acc)), case crypto:stream_decrypt(OrigState, CipherText) of {_, Plain} -> @@ -774,9 +818,9 @@ stream_cipher_incment(_State, OrigState, [], Acc, Plain) -> Other -> ct:fail({{crypto, stream_decrypt, [OrigState, CipherText]}, {expected, Plain}, {got, Other}}) end; -stream_cipher_incment(State0, OrigState, [PlainText | PlainTexts], Acc, Plain) -> +stream_cipher_incment_loop(State0, OrigState, [PlainText | PlainTexts], Acc, Plain) -> {State, CipherText} = crypto:stream_encrypt(State0, PlainText), - stream_cipher_incment(State, OrigState, PlainTexts, [CipherText | Acc], Plain). + stream_cipher_incment_loop(State, OrigState, PlainTexts, [CipherText | Acc], Plain). aead_cipher({Type, Key, PlainText, IV, AAD, CipherText, CipherTag}) -> Plain = iolist_to_binary(PlainText), @@ -1027,7 +1071,9 @@ do_cmac_iolistify({Type, Key, Text, Size, CMac}) -> do_stream_iolistify({Type, Key, PlainText}) -> {Type, iolistify(Key), iolistify(PlainText)}; do_stream_iolistify({Type, Key, IV, PlainText}) -> - {Type, iolistify(Key), IV, iolistify(PlainText)}. + {Type, iolistify(Key), IV, iolistify(PlainText)}; +do_stream_iolistify({Type, Key, IV, PlainText, CipherText}) -> + {Type, iolistify(Key), IV, iolistify(PlainText), CipherText}. do_block_iolistify({des_cbc = Type, Key, IV, PlainText}) -> {Type, Key, IV, des_iolistify(PlainText)}; @@ -1432,6 +1478,18 @@ group_config(aes_gcm, Config) -> group_config(chacha20_poly1305, Config) -> AEAD = chacha20_poly1305(), [{aead, AEAD} | Config]; +group_config(chacha20, Config) -> + Stream = chacha20(), + [{stream, Stream} | Config]; +group_config(poly1305, Config) -> + V = [%% {Key, Txt, Expect} + {%% RFC7539 2.5.2 + crypto_SUITE:hexstr2bin("85d6be7857556d337f4452fe42d506a80103808afb0db2fd4abff6af4149f51b"), + <<"Cryptographic Forum Research Group">>, + crypto_SUITE:hexstr2bin("a8061dc1305136c6c22b8baf0c0127a9") + } + ], + [{poly1305,V} | Config]; group_config(aes_cbc, Config) -> Block = aes_cbc(Config), [{block, Block} | Config]; @@ -2069,6 +2127,7 @@ aes_gcm(Config) -> "gcmEncryptExtIV192.rsp", "gcmEncryptExtIV256.rsp"]). + %% https://tools.ietf.org/html/rfc7539#appendix-A.5 chacha20_poly1305() -> [ @@ -2114,6 +2173,103 @@ chacha20_poly1305() -> hexstr2bin("eead9d67890cbb22392336fea1851f38")} %% CipherTag ]. + +chacha20() -> +%%% chacha20 (no mode) test vectors from RFC 7539 A.2 + [ + %% Test Vector #1: + {chacha20, + hexstr2bin("00000000000000000000000000000000" + "00000000000000000000000000000000"), %% Key + hexstr2bin("00000000" % Initial counter = 0, little-endian + "000000000000000000000000"), %% IV + hexstr2bin("00000000000000000000000000000000" %% PlainText + "00000000000000000000000000000000" + "00000000000000000000000000000000" + "00000000000000000000000000000000"), + hexstr2bin("76b8e0ada0f13d90405d6ae55386bd28" %% CipherText + "bdd219b8a08ded1aa836efcc8b770dc7" + "da41597c5157488d7724e03fb8d84a37" + "6a43b8f41518a11cc387b669b2ee6586")}, + %% Test Vector #2: + {chacha20, + hexstr2bin("00000000000000000000000000000000" + "00000000000000000000000000000001"), %% Key + hexstr2bin("01000000" % Initial counter = 1, little-endian + "000000000000000000000002"), %% IV + hexstr2bin("416e79207375626d697373696f6e2074" %% PlainText + "6f20746865204945544620696e74656e" + "6465642062792074686520436f6e7472" + "696275746f7220666f72207075626c69" + "636174696f6e20617320616c6c206f72" + "2070617274206f6620616e2049455446" + "20496e7465726e65742d447261667420" + "6f722052464320616e6420616e792073" + "746174656d656e74206d616465207769" + "7468696e2074686520636f6e74657874" + "206f6620616e20494554462061637469" + "7669747920697320636f6e7369646572" + "656420616e20224945544620436f6e74" + "7269627574696f6e222e205375636820" + "73746174656d656e747320696e636c75" + "6465206f72616c2073746174656d656e" + "747320696e2049455446207365737369" + "6f6e732c2061732077656c6c20617320" + "7772697474656e20616e6420656c6563" + "74726f6e696320636f6d6d756e696361" + "74696f6e73206d61646520617420616e" + "792074696d65206f7220706c6163652c" + "20776869636820617265206164647265" + "7373656420746f"), + hexstr2bin("a3fbf07df3fa2fde4f376ca23e827370" %% CipherText + "41605d9f4f4f57bd8cff2c1d4b7955ec" + "2a97948bd3722915c8f3d337f7d37005" + "0e9e96d647b7c39f56e031ca5eb6250d" + "4042e02785ececfa4b4bb5e8ead0440e" + "20b6e8db09d881a7c6132f420e527950" + "42bdfa7773d8a9051447b3291ce1411c" + "680465552aa6c405b7764d5e87bea85a" + "d00f8449ed8f72d0d662ab052691ca66" + "424bc86d2df80ea41f43abf937d3259d" + "c4b2d0dfb48a6c9139ddd7f76966e928" + "e635553ba76c5c879d7b35d49eb2e62b" + "0871cdac638939e25e8a1e0ef9d5280f" + "a8ca328b351c3c765989cbcf3daa8b6c" + "cc3aaf9f3979c92b3720fc88dc95ed84" + "a1be059c6499b9fda236e7e818b04b0b" + "c39c1e876b193bfe5569753f88128cc0" + "8aaa9b63d1a16f80ef2554d7189c411f" + "5869ca52c5b83fa36ff216b9c1d30062" + "bebcfd2dc5bce0911934fda79a86f6e6" + "98ced759c3ff9b6477338f3da4f9cd85" + "14ea9982ccafb341b2384dd902f3d1ab" + "7ac61dd29c6f21ba5b862f3730e37cfd" + "c4fd806c22f221")}, + %%Test Vector #3: + {chacha20, + hexstr2bin("1c9240a5eb55d38af333888604f6b5f0" + "473917c1402b80099dca5cbc207075c0"), %% Key + hexstr2bin("2a000000" % Initial counter = 42 (decimal), little-endian + "000000000000000000000002"), %% IV + hexstr2bin("2754776173206272696c6c69672c2061" %% PlainText + "6e642074686520736c6974687920746f" + "7665730a446964206779726520616e64" + "2067696d626c6520696e207468652077" + "6162653a0a416c6c206d696d73792077" + "6572652074686520626f726f676f7665" + "732c0a416e6420746865206d6f6d6520" + "7261746873206f757467726162652e"), + hexstr2bin("62e6347f95ed87a45ffae7426f27a1df" %% CipherText + "5fb69110044c0d73118effa95b01e5cf" + "166d3df2d721caf9b21e5fb14c616871" + "fd84c54f9d65b283196c7fe4f60553eb" + "f39c6402c42234e32a356b3e764312a6" + "1a5532055716ead6962568f87d3f3f77" + "04c6a8d1bcd1bf4d50d6154b6da731b1" + "87b58dfd728afa36757a797ac188d1")} + ]. + + rsa_plain() -> <<"7896345786348756234 Hejsan Svejsan, erlang crypto debugger" "09812312908312378623487263487623412039812 huagasd">>. diff --git a/lib/ssh/doc/src/ssh_app.xml b/lib/ssh/doc/src/ssh_app.xml index 9ec909d733..4f0896d613 100644 --- a/lib/ssh/doc/src/ssh_app.xml +++ b/lib/ssh/doc/src/ssh_app.xml @@ -186,6 +186,7 @@ <tag>Encryption algorithms (ciphers)</tag> <item> <list type="bulleted"> + <item>[email protected]</item> <item>[email protected]</item> <item>aes256-ctr</item> <item>aes192-ctr</item> diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl index 01c44cb371..4ac5b7a2c1 100644 --- a/lib/ssh/src/ssh.hrl +++ b/lib/ssh/src/ssh.hrl @@ -140,7 +140,8 @@ 'aes192-ctr' | 'aes256-ctr' | + '[email protected]' | . -type mac_alg() :: 'AEAD_AES_128_GCM' | diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl index 8e4831a601..4b41c10cbb 100644 --- a/lib/ssh/src/ssh_connection_handler.erl +++ b/lib/ssh/src/ssh_connection_handler.erl @@ -356,6 +356,8 @@ alg(ConnectionHandler) -> | undefined, encrypted_data_buffer = <<>> :: binary() | undefined, + aead_data = <<>> :: binary() + | undefined, undecrypted_packet_length :: undefined | non_neg_integer(), key_exchange_init_msg :: #ssh_msg_kexinit{} | undefined, @@ -1308,14 +1310,16 @@ handle_event(info, {Proto, Sock, NewData}, StateName, D0 = #data{socket = Sock, try ssh_transport:handle_packet_part( D0#data.decrypted_data_buffer, <<(D0#data.encrypted_data_buffer)/binary, NewData/binary>>, - D0#data.undecrypted_packet_length, + D0#data.aead_data, + D0#data.undecrypted_packet_length, D0#data.ssh_params) of {packet_decrypted, DecryptedBytes, EncryptedDataRest, Ssh1} -> D1 = D0#data{ssh_params = Ssh1#ssh{recv_sequence = ssh_transport:next_seqnum(Ssh1#ssh.recv_sequence)}, decrypted_data_buffer = <<>>, - undecrypted_packet_length = undefined, + undecrypted_packet_length = undefined, + aead_data = <<>>, encrypted_data_buffer = EncryptedDataRest}, try ssh_message:decode(set_kex_overload_prefix(DecryptedBytes,D1)) @@ -1353,14 +1357,15 @@ handle_event(info, {Proto, Sock, NewData}, StateName, D0 = #data{socket = Sock, StateName, D1), {stop, Shutdown, D} end; - - {get_more, DecryptedBytes, EncryptedDataRest, RemainingSshPacketLen, Ssh1} -> + + {get_more, DecryptedBytes, EncryptedDataRest, AeadData, RemainingSshPacketLen, Ssh1} -> %% Here we know that there are not enough bytes in %% EncryptedDataRest to use. We must wait for more. inet:setopts(Sock, [{active, once}]), {keep_state, D0#data{encrypted_data_buffer = EncryptedDataRest, decrypted_data_buffer = DecryptedBytes, - undecrypted_packet_length = RemainingSshPacketLen, + undecrypted_packet_length = RemainingSshPacketLen, + aead_data = AeadData, ssh_params = Ssh1}}; {bad_mac, Ssh1} -> diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl index b6d7aa0b1b..d6b9142529 100644 --- a/lib/ssh/src/ssh_transport.erl +++ b/lib/ssh/src/ssh_transport.erl @@ -36,7 +36,7 @@ default_algorithms/0, default_algorithms/1, algo_classes/0, algo_class/1, algo_two_spec_classes/0, algo_two_spec_class/1, - handle_packet_part/4, + handle_packet_part/5, handle_hello_version/1, key_exchange_init_msg/1, key_init/3, new_keys_message/1, @@ -114,7 +114,8 @@ default_algorithms(kex) -> default_algorithms(cipher) -> supported_algorithms(cipher, same(['AEAD_AES_128_GCM', - 'AEAD_AES_256_GCM'])); + 'AEAD_AES_256_GCM' + ])); default_algorithms(mac) -> supported_algorithms(mac, same(['AEAD_AES_128_GCM', 'AEAD_AES_256_GCM'])); @@ -160,6 +161,7 @@ supported_algorithms(cipher) -> same( select_crypto_supported( [ + {'[email protected]', [{ciphers,chacha20}, {macs,poly1305}]}, {'[email protected]', [{ciphers,{aes_gcm,256}}]}, {'aes256-ctr', [{ciphers,{aes_ctr,256}}]}, {'aes192-ctr', [{ciphers,{aes_ctr,192}}]}, @@ -982,13 +984,14 @@ select_algorithm(Role, Client, Server, Opts) -> %%% the exchanged MAC algorithms are ignored and there doesn't have to be %%% a matching MAC. -aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; -aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; -aead_gcm_simultan('AEAD_AES_128_GCM', _) -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; -aead_gcm_simultan('AEAD_AES_256_GCM', _) -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; -aead_gcm_simultan(_, 'AEAD_AES_128_GCM') -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; -aead_gcm_simultan(_, 'AEAD_AES_256_GCM') -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; -aead_gcm_simultan(Cipher, Mac) -> {Cipher,Mac}. +aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_128_GCM', 'AEAD_AES_128_GCM'}; +aead_gcm_simultan('[email protected]', _) -> {'AEAD_AES_256_GCM', 'AEAD_AES_256_GCM'}; +aead_gcm_simultan('AEAD_AES_128_GCM'=C, _) -> {C, C}; +aead_gcm_simultan('AEAD_AES_256_GCM'=C, _) -> {C, C}; +aead_gcm_simultan(_, 'AEAD_AES_128_GCM'=C) -> {C, C}; +aead_gcm_simultan(_, 'AEAD_AES_256_GCM'=C) -> {C, C}; +aead_gcm_simultan('[email protected]'=C, _)-> {C, C}; +aead_gcm_simultan(Cipher, Mac) -> {Cipher,Mac}. select_encrypt_decrypt(client, Client, Server) -> @@ -1136,7 +1139,7 @@ pack(PlainText, encrypt = CryptoAlg} = Ssh0, PacketLenDeviationForTests) when is_binary(PlainText) -> {Ssh1, CompressedPlainText} = compress(Ssh0, PlainText), - {EcryptedPacket, MAC, Ssh3} = + {FinalPacket, Ssh3} = case pkt_type(CryptoAlg) of common -> PaddingLen = padding_length(4+1+size(CompressedPlainText), Ssh0), @@ -1145,16 +1148,15 @@ pack(PlainText, PlainPacketData = <<?UINT32(PlainPacketLen),?BYTE(PaddingLen), CompressedPlainText/binary, Padding/binary>>, {Ssh2, EcryptedPacket0} = encrypt(Ssh1, PlainPacketData), MAC0 = mac(MacAlg, MacKey, SeqNum, PlainPacketData), - {EcryptedPacket0, MAC0, Ssh2}; + {<<EcryptedPacket0/binary,MAC0/binary>>, Ssh2}; aead -> PaddingLen = padding_length(1+size(CompressedPlainText), Ssh0), Padding = ssh_bits:random(PaddingLen), PlainPacketLen = 1 + PaddingLen + size(CompressedPlainText) + PacketLenDeviationForTests, PlainPacketData = <<?BYTE(PaddingLen), CompressedPlainText/binary, Padding/binary>>, - {Ssh2, {EcryptedPacket0,MAC0}} = encrypt(Ssh1, {<<?UINT32(PlainPacketLen)>>,PlainPacketData}), - {<<?UINT32(PlainPacketLen),EcryptedPacket0/binary>>, MAC0, Ssh2} + {Ssh2, {EcryptedPacket0,MAC0}} = encrypt(Ssh1, <<?UINT32(PlainPacketLen),PlainPacketData/binary>>), + {<<EcryptedPacket0/binary,MAC0/binary>>, Ssh2} end, - FinalPacket = [EcryptedPacket, MAC], Ssh = Ssh3#ssh{send_sequence = (SeqNum+1) band 16#ffffffff}, {FinalPacket, Ssh}. @@ -1174,31 +1176,31 @@ padding_length(Size, #ssh{encrypt_block_size = BlockSize, -handle_packet_part(<<>>, Encrypted0, undefined, #ssh{decrypt = CryptoAlg} = Ssh0) -> +handle_packet_part(<<>>, Encrypted0, AEAD0, undefined, #ssh{decrypt = CryptoAlg} = Ssh0) -> %% New ssh packet case get_length(pkt_type(CryptoAlg), Encrypted0, Ssh0) of get_more -> %% too short to get the length - {get_more, <<>>, Encrypted0, undefined, Ssh0}; + {get_more, <<>>, Encrypted0, AEAD0, undefined, Ssh0}; - {ok, PacketLen, _, _, _} when PacketLen > ?SSH_MAX_PACKET_SIZE -> + {ok, PacketLen, _, _, _, _} when PacketLen > ?SSH_MAX_PACKET_SIZE -> %% far too long message than expected {error, {exceeds_max_size,PacketLen}}; - {ok, PacketLen, Decrypted, Encrypted1, + {ok, PacketLen, Decrypted, Encrypted1, AEAD, #ssh{recv_mac_size = MacSize} = Ssh1} -> %% enough bytes so we got the length and can calculate how many %% more bytes to expect for a full packet TotalNeeded = (4 + PacketLen + MacSize), - handle_packet_part(Decrypted, Encrypted1, TotalNeeded, Ssh1) + handle_packet_part(Decrypted, Encrypted1, AEAD, TotalNeeded, Ssh1) end; -handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, Ssh0) +handle_packet_part(DecryptedPfx, EncryptedBuffer, AEAD, TotalNeeded, Ssh0) when (size(DecryptedPfx)+size(EncryptedBuffer)) < TotalNeeded -> %% need more bytes to finalize the packet - {get_more, DecryptedPfx, EncryptedBuffer, TotalNeeded, Ssh0}; + {get_more, DecryptedPfx, EncryptedBuffer, AEAD, TotalNeeded, Ssh0}; -handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, +handle_packet_part(DecryptedPfx, EncryptedBuffer, AEAD, TotalNeeded, #ssh{recv_mac_size = MacSize, decrypt = CryptoAlg} = Ssh0) -> %% enough bytes to decode the packet. @@ -1216,8 +1218,7 @@ handle_packet_part(DecryptedPfx, EncryptedBuffer, TotalNeeded, {packet_decrypted, DecompressedPayload, NextPacketBytes, Ssh} end; aead -> - PacketLenBin = DecryptedPfx, - case decrypt(Ssh0, {PacketLenBin,EncryptedSfx,Mac}) of + case decrypt(Ssh0, {AEAD,EncryptedSfx,Mac}) of {Ssh1, error} -> {bad_mac, Ssh1}; {Ssh1, DecryptedSfx} -> @@ -1234,21 +1235,29 @@ get_length(common, EncryptedBuffer, #ssh{decrypt_block_size = BlockSize} = Ssh0) <<EncBlock:BlockSize/binary, EncryptedRest/binary>> = EncryptedBuffer, {Ssh, <<?UINT32(PacketLen),_/binary>> = Decrypted} = decrypt(Ssh0, EncBlock), - {ok, PacketLen, Decrypted, EncryptedRest, Ssh}; + {ok, PacketLen, Decrypted, EncryptedRest, <<>>, Ssh}; false -> get_more end; + get_length(aead, EncryptedBuffer, Ssh) -> - case size(EncryptedBuffer) >= 4 of - true -> + case {size(EncryptedBuffer) >= 4, Ssh#ssh.decrypt} of + {true, '[email protected]'} -> + <<EncryptedLen:4/binary, EncryptedRest/binary>> = EncryptedBuffer, + {Ssh1, PacketLenBin} = decrypt(Ssh, {length,EncryptedLen}), + <<?UINT32(PacketLen)>> = PacketLenBin, + {ok, PacketLen, PacketLenBin, EncryptedRest, EncryptedLen, Ssh1}; + {true, _} -> <<?UINT32(PacketLen), EncryptedRest/binary>> = EncryptedBuffer, - {ok, PacketLen, <<?UINT32(PacketLen)>>, EncryptedRest, Ssh}; - false -> + {ok, PacketLen, <<?UINT32(PacketLen)>>, EncryptedRest, <<?UINT32(PacketLen)>>, Ssh}; + {false, _} -> get_more end. + pkt_type('AEAD_AES_128_GCM') -> aead; pkt_type('AEAD_AES_256_GCM') -> aead; +pkt_type('[email protected]') -> aead; pkt_type(_) -> common. payload(<<PacketLen:32, PaddingLen:8, PayloadAndPadding/binary>>) -> @@ -1353,11 +1362,32 @@ cipher('aes192-ctr') -> cipher('aes256-ctr') -> #cipher_data{key_bytes = 32, iv_bytes = 16, - block_bytes = 16}. + block_bytes = 16}; + +cipher('[email protected]') -> % FIXME: Verify!! + #cipher_data{key_bytes = 32, + iv_bytes = 12, + block_bytes = 8}. + encrypt_init(#ssh{encrypt = none} = Ssh) -> {ok, Ssh}; +encrypt_init(#ssh{encrypt = '[email protected]', role = client} = Ssh) -> + %% [email protected] uses two independent crypto streams, one (chacha20) + %% for the length used in stream mode, and the other (chacha20-poly1305) as AEAD for + %% the payload and to MAC the length||payload. + %% See draft-josefsson-ssh-chacha20-poly1305-openssh-00 + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "C", 512), + {ok, Ssh#ssh{encrypt_keys = {K1,K2} + % encrypt_block_size = 16, %default = 8. What to set it to? 64 (openssl chacha.h) + % ctx and iv is setup for each packet + }}; +encrypt_init(#ssh{encrypt = '[email protected]', role = server} = Ssh) -> + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "D", 512), + {ok, Ssh#ssh{encrypt_keys = {K1,K2} + % encrypt_block_size = 16, %default = 8. What to set it to? + }}; encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) -> IV = hash(Ssh, "A", 12*8), <<K:16/binary>> = hash(Ssh, "C", 128), @@ -1458,18 +1488,40 @@ encrypt_final(Ssh) -> encrypt(#ssh{encrypt = none} = Ssh, Data) -> {Ssh, Data}; +encrypt(#ssh{encrypt = '[email protected]', + encrypt_keys = {K1,K2}, + send_sequence = Seq} = Ssh, + <<LenData:4/binary, PayloadData/binary>>) -> + %% Encrypt length + IV1 = <<0:8/unit:8, Seq:8/unit:8>>, + {_,EncLen} = crypto:stream_encrypt(crypto:stream_init(chacha20, K1, IV1), + LenData), + %% Encrypt payload + IV2 = <<1:8/little-unit:8, Seq:8/unit:8>>, + {_,EncPayloadData} = crypto:stream_encrypt(crypto:stream_init(chacha20, K2, IV2), + PayloadData), + + %% MAC tag + {_,PolyKey} = crypto:stream_encrypt(crypto:stream_init(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>), + <<0:32/unit:8>>), + EncBytes = <<EncLen/binary,EncPayloadData/binary>>, + Ctag = crypto:poly1305(PolyKey, EncBytes), + %% Result + {Ssh, {EncBytes,Ctag}}; encrypt(#ssh{encrypt = 'AEAD_AES_128_GCM', encrypt_keys = K, - encrypt_ctx = IV0} = Ssh, Data={_AAD,_Ptext}) -> - Enc = {_Ctext,_Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, Data), + encrypt_ctx = IV0} = Ssh, + <<LenData:4/binary, PayloadData/binary>>) -> + {Ctext,Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, {LenData,PayloadData}), IV = next_gcm_iv(IV0), - {Ssh#ssh{encrypt_ctx = IV}, Enc}; + {Ssh#ssh{encrypt_ctx = IV}, {<<LenData/binary,Ctext/binary>>,Ctag}}; encrypt(#ssh{encrypt = 'AEAD_AES_256_GCM', encrypt_keys = K, - encrypt_ctx = IV0} = Ssh, Data={_AAD,_Ptext}) -> - Enc = {_Ctext,_Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, Data), + encrypt_ctx = IV0} = Ssh, + <<LenData:4/binary, PayloadData/binary>>) -> + {Ctext,Ctag} = crypto:block_encrypt(aes_gcm, K, IV0, {LenData,PayloadData}), IV = next_gcm_iv(IV0), - {Ssh#ssh{encrypt_ctx = IV}, Enc}; + {Ssh#ssh{encrypt_ctx = IV}, {<<LenData/binary,Ctext/binary>>,Ctag}}; encrypt(#ssh{encrypt = '3des-cbc', encrypt_keys = {K1,K2,K3}, encrypt_ctx = IV0} = Ssh, Data) -> @@ -1502,6 +1554,14 @@ encrypt(#ssh{encrypt = 'aes256-ctr', decrypt_init(#ssh{decrypt = none} = Ssh) -> {ok, Ssh}; +decrypt_init(#ssh{decrypt = '[email protected]', role = client} = Ssh) -> + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "D", 512), + {ok, Ssh#ssh{decrypt_keys = {K1,K2} + }}; +decrypt_init(#ssh{decrypt = '[email protected]', role = server} = Ssh) -> + <<K2:32/binary,K1:32/binary>> = hash(Ssh, "C", 512), + {ok, Ssh#ssh{decrypt_keys = {K1,K2} + }}; decrypt_init(#ssh{decrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) -> IV = hash(Ssh, "B", 12*8), <<K:16/binary>> = hash(Ssh, "D", 128), @@ -1602,6 +1662,31 @@ decrypt_final(Ssh) -> decrypt(Ssh, <<>>) -> {Ssh, <<>>}; +decrypt(#ssh{decrypt = '[email protected]', + decrypt_keys = {K1,_K2}, + recv_sequence = Seq} = Ssh, {length,EncryptedLen}) -> + {_State,PacketLenBin} = + crypto:stream_decrypt(crypto:stream_init(chacha20, K1, <<0:8/unit:8, Seq:8/unit:8>>), + EncryptedLen), + {Ssh, PacketLenBin}; +decrypt(#ssh{decrypt = '[email protected]', + decrypt_keys = {_K1,K2}, + recv_sequence = Seq} = Ssh, {AAD,Ctext,Ctag}) -> + %% The length is already decoded and used to divide the input + %% Check the mac (important that it is timing-safe): + {_,PolyKey} = + crypto:stream_encrypt(crypto:stream_init(chacha20, K2, <<0:8/unit:8,Seq:8/unit:8>>), + <<0:32/unit:8>>), + case equal_const_time(Ctag, crypto:poly1305(PolyKey, <<AAD/binary,Ctext/binary>>)) of + true -> + %% MAC is ok, decode + IV2 = <<1:8/little-unit:8, Seq:8/unit:8>>, + {_,PlainText} = + crypto:stream_decrypt(crypto:stream_init(chacha20,K2,IV2), Ctext), + {Ssh, PlainText}; + false -> + {Ssh,error} + end; decrypt(#ssh{decrypt = none} = Ssh, Data) -> {Ssh, Data}; decrypt(#ssh{decrypt = 'AEAD_AES_128_GCM', @@ -1744,7 +1829,7 @@ send_mac_init(SSH) -> Key = hash(SSH, "F", KeySize), {ok, SSH#ssh { send_mac_key = Key }} end; - aead -> + _ -> %% Not applicable {ok, SSH} end. @@ -1765,7 +1850,7 @@ recv_mac_init(SSH) -> Key = hash(SSH, "E", 8*mac_key_bytes(SSH#ssh.recv_mac)), {ok, SSH#ssh { recv_mac_key = Key }} end; - aead -> + _ -> %% Not applicable {ok, SSH} end. @@ -1905,6 +1990,7 @@ mac_key_bytes('hmac-sha2-256')-> 32; mac_key_bytes('hmac-sha2-512')-> 64; mac_key_bytes('AEAD_AES_128_GCM') -> 0; mac_key_bytes('AEAD_AES_256_GCM') -> 0; +mac_key_bytes('[email protected]') -> 0; mac_key_bytes(none) -> 0. mac_digest_size('hmac-sha1') -> 20; @@ -1915,6 +2001,7 @@ mac_digest_size('hmac-sha2-256') -> 32; mac_digest_size('hmac-sha2-512') -> 64; mac_digest_size('AEAD_AES_128_GCM') -> 16; mac_digest_size('AEAD_AES_256_GCM') -> 16; +mac_digest_size('[email protected]') -> 16; mac_digest_size(none) -> 0. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -2026,6 +2113,20 @@ same(Algs) -> [{client2server,Algs}, {server2client,Algs}]. %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%%% Compare two binaries in a timing safe maner. +%%% The time spent in comparing should not be different depending on where in the binaries they differ. +%%% This is to avoid a certain side-channel attac. +equal_const_time(X1, X2) -> equal_const_time(X1, X2, true). + +equal_const_time(<<B1,R1/binary>>, <<B2,R2/binary>>, Truth) -> + equal_const_time(R1, R2, Truth and (B1 == B2)); +equal_const_time(<<>>, <<>>, Truth) -> + Truth; +equal_const_time(_, _, _) -> + false. + +%%%-------- Remove CR, LF and following characters from a line + trim_tail(Str) -> lists:takewhile(fun(C) -> C=/=$\r andalso C=/=$\n diff --git a/lib/ssh/test/ssh_bench_SUITE.erl b/lib/ssh/test/ssh_bench_SUITE.erl index b6c6147646..441cf97234 100644 --- a/lib/ssh/test/ssh_bench_SUITE.erl +++ b/lib/ssh/test/ssh_bench_SUITE.erl @@ -65,10 +65,10 @@ init_per_suite(Config) -> {preferred_algorithms, Algs}, {modify_algorithms,[{prepend,[{cipher,[none]}, {mac,[none]} - ]}, - {rm, [{cipher,['[email protected]', - '[email protected]']} - ]} + ]} + %% ,{rm, [{cipher,['[email protected]', + %% '[email protected]']} + %% ]} ]}, {max_random_length_padding, 0}, {subsystems, [{"/dev/null", {ssh_bench_dev_null,[DataSize]}}]} @@ -152,7 +152,8 @@ transfer_text(Config) -> || {Crypto,Mac} <- [{ none, none}, {'aes128-ctr', 'hmac-sha1'}, {'aes256-ctr', 'hmac-sha1'}, -%% {'[email protected]', 'hmac-sha1'}, +{'[email protected]', 'hmac-sha1'}, +{'[email protected]', 'hmac-sha1'}, {'aes128-cbc', 'hmac-sha1'}, {'3des-cbc', 'hmac-sha1'}, {'aes128-ctr', 'hmac-sha2-256'}, @@ -182,29 +183,31 @@ gen_data(DataSz) -> %% {suite, ?MODULE}, %% {name, mk_name(["Transfer 1M bytes ",Cipher,"/",Mac," [µs]"])}]); connect_measure(Port, Cipher, Mac, Data, Options) -> - AES_GCM = {cipher,['[email protected]', - '[email protected]']}, + AES_GCM = {cipher, + []}, + %% ['[email protected]', + %% '[email protected]']}, AlgOpt = case {Cipher,Mac} of {none,none} -> [{modify_algorithms,[{prepend, [{cipher,[Cipher]}, - {mac,[Mac]}]}, - {rm,[AES_GCM]} + {mac,[Mac]}]} +%%% ,{rm,[AES_GCM]} ]}]; {none,_} -> - [{modify_algorithms,[{prepend, [{cipher,[Cipher]}]}, - {rm,[AES_GCM]} + [{modify_algorithms,[{prepend, [{cipher,[Cipher]}]} +%%% ,{rm,[AES_GCM]} ]}, {preferred_algorithms, [{mac,[Mac]}]}]; {_,none} -> - [{modify_algorithms,[{prepend, [{mac,[Mac]}]}, - {rm,[AES_GCM]} + [{modify_algorithms,[{prepend, [{mac,[Mac]}]} +%%% ,{rm,[AES_GCM]} ]}, {preferred_algorithms, [{cipher,[Cipher]}]}]; _ -> [{preferred_algorithms, [{cipher,[Cipher]}, - {mac,[Mac]}]}, - {modify_algorithms, [{rm,[AES_GCM]}]} + {mac,[Mac]}]} +%%% ,{modify_algorithms, [{rm,[AES_GCM]}]} ] end, Times = |