From 9f2cdf704fa0732817b4c49067cd561dd13ff730 Mon Sep 17 00:00:00 2001 From: Yura Beznos Date: Tue, 13 Aug 2013 19:00:00 +0400 Subject: crypto: Add IGE mode for AES --- lib/crypto/c_src/crypto.c | 37 +++++++++++++++++++++++++++++++++ lib/crypto/doc/src/crypto.xml | 4 ++-- lib/crypto/src/crypto.erl | 44 ++++++++++++++++++++++++++++++++++++---- lib/crypto/test/crypto_SUITE.erl | 24 ++++++++++++++++++++++ 4 files changed, 103 insertions(+), 6 deletions(-) diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index c28ff8136c..5caa47bcf4 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -221,6 +221,7 @@ static ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg static ERL_NIF_TERM dss_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM rsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM aes_cbc_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); +static ERL_NIF_TERM aes_ige_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM rc4_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); @@ -349,6 +350,7 @@ static ErlNifFunc nif_funcs[] = { {"dss_verify_nif", 4, dss_verify_nif}, {"rsa_verify_nif", 4, rsa_verify_nif}, {"aes_cbc_crypt", 4, aes_cbc_crypt}, + {"aes_ige_crypt", 4, aes_ige_crypt}, {"do_exor", 2, do_exor}, {"rc4_encrypt", 2, rc4_encrypt}, {"rc4_set_key", 1, rc4_set_key}, @@ -2090,6 +2092,41 @@ static ERL_NIF_TERM aes_cbc_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM a return ret; } +static ERL_NIF_TERM aes_ige_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{/* (Key, IVec, Data, IsEncrypt) */ + ErlNifBinary key_bin, ivec_bin, data_bin; + AES_KEY aes_key; + unsigned char ivec[32]; + int i; + unsigned char* ret_ptr; + ERL_NIF_TERM ret; + + if (!enif_inspect_iolist_as_binary(env, argv[0], &key_bin) + || (key_bin.size != 16 && key_bin.size != 32) + || !enif_inspect_binary(env, argv[1], &ivec_bin) + || ivec_bin.size != 32 + || !enif_inspect_iolist_as_binary(env, argv[2], &data_bin) + || data_bin.size % 16 != 0) { + + return enif_make_badarg(env); + } + + if (argv[3] == atom_true) { + i = AES_ENCRYPT; + AES_set_encrypt_key(key_bin.data, key_bin.size*8, &aes_key); + } + else { + i = AES_DECRYPT; + AES_set_decrypt_key(key_bin.data, key_bin.size*8, &aes_key); + } + + ret_ptr = enif_make_new_binary(env, data_bin.size, &ret); + memcpy(ivec, ivec_bin.data, 32); /* writable copy */ + AES_ige_encrypt(data_bin.data, ret_ptr, data_bin.size, &aes_key, ivec, i); + CONSUME_REDS(env,data_bin); + return ret; +} + static ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) {/* (Data1, Data2) */ ErlNifBinary d1, d2; diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml index 5bb2365109..49c020dbe5 100644 --- a/lib/crypto/doc/src/crypto.xml +++ b/lib/crypto/doc/src/crypto.xml @@ -118,7 +118,7 @@

stream_cipher() = rc4 | aes_ctr

-

block_cipher() = aes_cbc128 | aes_cfb128 | blowfish_cbc | +

block_cipher() = aes_cbc128 | aes_cfb128 | aes_ige256 | blowfish_cbc | blowfish_cfb64 | des_cbc | des_cfb | des3_cbc | des3_cbf | des_ede3 | rc2_cbc

@@ -142,7 +142,7 @@ Note that both md4 and md5 are recommended only for compatibility with existing applications.

cipher_algorithms() = des_cbc | des_cfb | des3_cbc | des3_cbf | des_ede3 | - blowfish_cbc | blowfish_cfb64 | aes_cbc128 | aes_cfb128| aes_cbc256 | rc2_cbc | aes_ctr| rc4

+ blowfish_cbc | blowfish_cfb64 | aes_cbc128 | aes_cfb128| aes_cbc256 | aes_ige256 | rc2_cbc | aes_ctr| rc4

public_key_algorithms() = rsa |dss | ecdsa | dh | ecdh

diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl index 8e8370f3b0..0e8b80c1f9 100644 --- a/lib/crypto/src/crypto.erl +++ b/lib/crypto/src/crypto.erl @@ -215,7 +215,7 @@ supports()-> [{hashs, Algs -- [ec]}, {ciphers, [des_cbc, des_cfb, des3_cbc, des3_cbf, des_ede3, blowfish_cbc, blowfish_cfb64, blowfish_ofb64, blowfish_ecb, aes_cbc128, aes_cfb128, - aes_cbc256, rc2_cbc, aes_ctr, rc4 + aes_cbc256, aes_ige256, rc2_cbc, aes_ctr, rc4 ]}, PubKeyAlgs ]. @@ -309,13 +309,16 @@ block_encrypt(aes_cbc128, Key, Ivec, Data) -> aes_cbc_128_encrypt(Key, Ivec, Data); block_encrypt(aes_cbc256, Key, Ivec, Data) -> aes_cbc_256_encrypt(Key, Ivec, Data); +block_encrypt(aes_ige256, Key, Ivec, Data) -> + aes_ige_256_encrypt(Key, Ivec, Data); block_encrypt(aes_cfb128, Key, Ivec, Data) -> aes_cfb_128_encrypt(Key, Ivec, Data); block_encrypt(rc2_cbc, Key, Ivec, Data) -> rc2_cbc_encrypt(Key, Ivec, Data). -spec block_decrypt(des_cbc | des_cfb | des3_cbc | des3_cbf | des_ede3 | blowfish_cbc | - blowfish_cfb64 | blowfish_ofb64 | aes_cbc128 | aes_cbc256 | aes_cfb128 | rc2_cbc, + blowfish_cfb64 | blowfish_ofb64 | aes_cbc128 | aes_cbc256 | aes_ige256 | + aes_cfb128 | rc2_cbc, Key::iodata(), Ivec::binary(), Data::iodata()) -> binary(). block_decrypt(des_cbc, Key, Ivec, Data) -> @@ -338,6 +341,8 @@ block_decrypt(aes_cbc128, Key, Ivec, Data) -> aes_cbc_128_decrypt(Key, Ivec, Data); block_decrypt(aes_cbc256, Key, Ivec, Data) -> aes_cbc_256_decrypt(Key, Ivec, Data); +block_decrypt(aes_ige256, Key, Ivec, Data) -> + aes_ige_256_decrypt(Key, Ivec, Data); block_decrypt(aes_cfb128, Key, Ivec, Data) -> aes_cfb_128_decrypt(Key, Ivec, Data); block_decrypt(rc2_cbc, Key, Ivec, Data) -> @@ -357,14 +362,16 @@ block_decrypt(des_ecb, Key, Data) -> block_decrypt(blowfish_ecb, Key, Data) -> blowfish_ecb_decrypt(Key, Data). --spec next_iv(des_cbc | des3_cbc | aes_cbc, Data::iodata()) -> binary(). +-spec next_iv(des_cbc | des3_cbc | aes_cbc | aes_ige, Data::iodata()) -> binary(). next_iv(des_cbc, Data) -> des_cbc_ivec(Data); next_iv(des3_cbc, Data) -> des_cbc_ivec(Data); next_iv(aes_cbc, Data) -> - aes_cbc_ivec(Data). + aes_cbc_ivec(Data); +next_iv(aes_ige, Data) -> + aes_ige_ivec(Data). -spec next_iv(des_cfb, Data::iodata(), Ivec::binary()) -> binary(). @@ -1255,6 +1262,35 @@ aes_cbc_ivec(Data) when is_list(Data) -> aes_cbc_ivec(list_to_binary(Data)). +%% +%% AES - with 256 bit key in infinite garble extension mode (IGE) +%% + +-spec aes_ige_256_decrypt(iodata(), binary(), iodata()) -> + binary(). + +aes_ige_256_encrypt(Key, IVec, Data) -> + aes_ige_crypt(Key, IVec, Data, true). + +aes_ige_256_decrypt(Key, IVec, Data) -> + aes_ige_crypt(Key, IVec, Data, false). + +aes_ige_crypt(_Key, _IVec, _Data, _IsEncrypt) -> ?nif_stub. + +%% +%% aes_ige_ivec(Data) -> binary() +%% +%% Returns the IVec to be used in the next iteration of +%% aes_ige_*_[encrypt|decrypt]. +%% IVec size: 32 bytes +%% +aes_ige_ivec(Data) when is_binary(Data) -> + {_, IVec} = split_binary(Data, size(Data) - 32), + IVec; +aes_ige_ivec(Data) when is_list(Data) -> + aes_ige_ivec(list_to_binary(Data)). + + %% Stream ciphers -------------------------------------------------------------------- stream_crypt(Fun, State, Data, Size, MaxByts, []) when Size =< MaxByts -> diff --git a/lib/crypto/test/crypto_SUITE.erl b/lib/crypto/test/crypto_SUITE.erl index 58aaa78d28..7074f00696 100644 --- a/lib/crypto/test/crypto_SUITE.erl +++ b/lib/crypto/test/crypto_SUITE.erl @@ -56,6 +56,7 @@ all() -> {group, aes_cbc128}, {group, aes_cfb128}, {group, aes_cbc256}, + {group, aes_ige256}, {group, rc2_cbc}, {group, rc4}, {group, aes_ctr}, @@ -90,6 +91,7 @@ groups() -> {aes_cbc128,[], [block]}, {aes_cfb128,[], [block]}, {aes_cbc256,[], [block]}, + {aes_ige256,[], [block]}, {blowfish_cbc, [], [block]}, {blowfish_ecb, [], [block]}, {blowfish_cfb64, [], [block]}, @@ -692,6 +694,9 @@ group_config(aes_cbc128, Config) -> group_config(aes_cbc256, Config) -> Block = aes_cbc256(), [{block, Block} | Config]; +group_config(aes_ige256, Config) -> + Block = aes_ige256(), + [{block, Block} | Config]; group_config(aes_cfb128, Config) -> Block = aes_cfb128(), [{block, Block} | Config]; @@ -1106,6 +1111,25 @@ aes_cbc256() -> hexstr2bin("f69f2445df4f9b17ad2b417be66c3710")} ]. +aes_ige256() -> + [{aes_ige256, + hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), + hexstr2bin("000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"), + hexstr2bin("6bc1bee22e409f96e93d7e117393172a")}, + {aes_ige256, + hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), + hexstr2bin("4D0F9E735749215C05CB20DA00F7814B77D33F8A668BEBBAC1739AB20302D4FE"), + hexstr2bin("ae2d8a571e03ac9c9eb76fac45af8e51")}, + {aes_ige256, + hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), + hexstr2bin("2A5569424DAE1ACEABDEEA108DB4606AE21A9227CAB5F55BF52535CFA2B34717"), + hexstr2bin("30c81c46a35ce411e5fbc1191a0a52ef")}, + {aes_ige256, + hexstr2bin("603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4"), + hexstr2bin("15D5A583D2D668E518E683D9BDF1B6D0E0C3B1E5D5C1D51E964822E1ADE88DFA"), + hexstr2bin("f69f2445df4f9b17ad2b417be66c3710")} + ]. + aes_cfb128() -> [{aes_cfb128, hexstr2bin("2b7e151628aed2a6abf7158809cf4f3c"), -- cgit v1.2.3