diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | include/Makefile.am | 2 | ||||
| -rw-r--r-- | include/osmocom/crypt/gprs_cipher.h | 2 | ||||
| -rw-r--r-- | include/osmocom/gsm/gea.h | 17 | ||||
| -rw-r--r-- | src/gsm/Makefile.am | 4 | ||||
| -rw-r--r-- | src/gsm/gea.c | 60 | ||||
| -rw-r--r-- | src/gsm/gprs_gea.c | 48 | ||||
| -rw-r--r-- | tests/Makefile.am | 7 | ||||
| -rw-r--r-- | tests/gea/gea_test.c | 68 | ||||
| -rw-r--r-- | tests/gea/gea_test.ok | 15 | ||||
| -rw-r--r-- | tests/testsuite.at | 6 |
11 files changed, 225 insertions, 5 deletions
@@ -62,6 +62,7 @@ tests/testsuite.log tests/utils/utils_test tests/stats/stats_test tests/kasumi/kasumi_test +tests/gea/gea_test tests/sms/sms_test tests/timer/timer_test tests/msgfile/msgfile_test diff --git a/include/Makefile.am b/include/Makefile.am index 7aa9c273..479e665d 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -131,7 +131,7 @@ endif noinst_HEADERS = \ osmocom/core/timer_compat.h \ - osmocom/gsm/kasumi.h + osmocom/gsm/kasumi.h osmocom/gsm/gea.h osmocom/core/bit%gen.h: osmocom/core/bitXXgen.h.tpl $(AM_V_GEN)$(MKDIR_P) $(dir $@) diff --git a/include/osmocom/crypt/gprs_cipher.h b/include/osmocom/crypt/gprs_cipher.h index d2425955..c302f10b 100644 --- a/include/osmocom/crypt/gprs_cipher.h +++ b/include/osmocom/crypt/gprs_cipher.h @@ -3,6 +3,8 @@ #include <osmocom/core/linuxlist.h> #include <osmocom/core/utils.h> +#include <stdint.h> + #define GSM0464_CIPH_MAX_BLOCK 1523 /* 3GPP TS 24.008 ยง 10.5.5.3 */ diff --git a/include/osmocom/gsm/gea.h b/include/osmocom/gsm/gea.h new file mode 100644 index 00000000..3051101d --- /dev/null +++ b/include/osmocom/gsm/gea.h @@ -0,0 +1,17 @@ +/* + * GEA3 header + * + * See gea.c for details + */ + +#pragma once + +#include <osmocom/crypt/gprs_cipher.h> + +#include <stdint.h> + +int gea3(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv, + enum gprs_cipher_direction direct); + +int gea4(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv, + enum gprs_cipher_direction direct); diff --git a/src/gsm/Makefile.am b/src/gsm/Makefile.am index 781f153a..0f43f48a 100644 --- a/src/gsm/Makefile.am +++ b/src/gsm/Makefile.am @@ -24,10 +24,10 @@ libgsmint_la_SOURCES = a5.c rxlev_stat.c tlv_parser.c comp128.c comp128v23.c \ conv_tch_afs_6_7_gen.c conv_tch_afs_5_9_gen.c \ conv_tch_afs_5_15_gen.c conv_tch_afs_4_75_gen.c \ auth_core.c auth_comp128v1.c auth_comp128v23.c \ - auth_milenage.c milenage/aes-encblock.c \ + auth_milenage.c milenage/aes-encblock.c gea.c \ milenage/aes-internal.c milenage/aes-internal-enc.c \ milenage/milenage.c gan.c ipa.c gsm0341.c apn.c \ - gsup.c + gsup.c gprs_gea.c libgsmint_la_LDFLAGS = -no-undefined libgsmint_la_LIBADD = ../libosmocore.la diff --git a/src/gsm/gea.c b/src/gsm/gea.c new file mode 100644 index 00000000..b8f6768a --- /dev/null +++ b/src/gsm/gea.c @@ -0,0 +1,60 @@ +/* + * gea.c + * + * Implementation of GEA3 and GEA4 + * + * Copyright (C) 2016 by Sysmocom s.f.m.c. GmbH + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <osmocom/core/bits.h> +#include <osmocom/crypt/gprs_cipher.h> +#include <osmocom/crypt/auth.h> +#include <osmocom/gsm/kasumi.h> + +#include <stdint.h> +#include <string.h> + +/*! \brief Performs the GEA4 algorithm as in 3GPP TS 55.226 V9.0.0 + * \param[in,out] out Buffer for gamma for encrypted/decrypted + * \param[in] len Length of out, in bytes + * \param[in] kc Buffer with the ciphering key + * \param[in] iv Init vector + * \param[in] direct Direction: 0 (MS -> SGSN) or 1 (SGSN -> MS) + */ +int gea4(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv, + enum gprs_cipher_direction direction) +{ + _kasumi_kgcore(0xFF, 0, iv, direction, kc, out, len * 8); + return 0; +} + +/*! \brief Performs the GEA3 algorithm as in 3GPP TS 55.216 V6.2.0 + * \param[in,out] out Buffer for gamma for encrypted/decrypted + * \param[in] len Length of out, in bytes + * \param[in] kc Buffer with the ciphering key + * \param[in] iv Init vector + * \param[in] direct Direction: 0 (MS -> SGSN) or 1 (SGSN -> MS) + */ +int gea3(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv, + enum gprs_cipher_direction direction) +{ + uint8_t ck[gprs_cipher_key_length(GPRS_ALGO_GEA4)]; + osmo_c4(ck, kc); + return gea4(out, len, ck, iv, direction); +} diff --git a/src/gsm/gprs_gea.c b/src/gsm/gprs_gea.c new file mode 100644 index 00000000..8ff16484 --- /dev/null +++ b/src/gsm/gprs_gea.c @@ -0,0 +1,48 @@ +/* + * gprs_gea.c + * + * GEA 3 & 4 plugin + * + * Copyright (C) 2016 by Sysmocom s.f.m.c. GmbH + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <osmocom/crypt/gprs_cipher.h> +#include <osmocom/gsm/gea.h> + +#include <stdint.h> + +static struct gprs_cipher_impl gea3_impl = { + .algo = GPRS_ALGO_GEA3, + .name = "GEA3 (libosmogsm built-in)", + .priority = 100, + .run = &gea3, +}; + +static struct gprs_cipher_impl gea4_impl = { + .algo = GPRS_ALGO_GEA4, + .name = "GEA4 (libosmogsm built-in)", + .priority = 100, + .run = &gea4, +}; + +static __attribute__((constructor)) void on_dso_load_gea(void) +{ + gprs_cipher_register(&gea3_impl); + gprs_cipher_register(&gea4_impl); +} diff --git a/tests/Makefile.am b/tests/Makefile.am index 73b2d6a8..9b85e6dc 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -7,7 +7,7 @@ check_PROGRAMS = timer/timer_test sms/sms_test ussd/ussd_test \ conv/conv_test auth/milenage_test lapd/lapd_test \ gsm0808/gsm0808_test gsm0408/gsm0408_test \ gb/bssgp_fc_test gb/gprs_bssgp_test gb/gprs_ns_test \ - gprs/gprs_test kasumi/kasumi_test \ + gprs/gprs_test kasumi/kasumi_test gea/gea_test \ logging/logging_test fr/fr_test codec/codec_test \ loggingrb/loggingrb_test strrb/strrb_test \ vty/vty_test comp128/comp128_test utils/utils_test \ @@ -37,6 +37,9 @@ comp128_comp128_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/ auth_milenage_test_SOURCES = auth/milenage_test.c auth_milenage_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la +gea_gea_test_SOURCES = gea/gea_test.c +gea_gea_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la + bits_bitrev_test_SOURCES = bits/bitrev_test.c bits_bitrev_test_LDADD = $(top_builddir)/src/libosmocore.la @@ -146,7 +149,7 @@ EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE) \ lapd/lapd_test.ok gsm0408/gsm0408_test.ok \ gsm0808/gsm0808_test.ok gb/bssgp_fc_tests.err \ gb/bssgp_fc_tests.ok gb/bssgp_fc_tests.sh \ - gb/gprs_bssgp_test.ok gb/gprs_ns_test.ok \ + gb/gprs_bssgp_test.ok gb/gprs_ns_test.ok gea/gea_test.ok \ gprs/gprs_test.ok kasumi/kasumi_test.ok codec/codec_test.ok \ msgfile/msgfile_test.ok msgfile/msgconfig.cfg \ logging/logging_test.ok logging/logging_test.err \ diff --git a/tests/gea/gea_test.c b/tests/gea/gea_test.c new file mode 100644 index 00000000..ebccaafd --- /dev/null +++ b/tests/gea/gea_test.c @@ -0,0 +1,68 @@ +#include <osmocom/core/bits.h> +#include <osmocom/core/utils.h> +#include <osmocom/crypt/gprs_cipher.h> + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <stdbool.h> + +static inline void print_check(char *res, uint8_t *out, uint16_t len) +{ + uint8_t buf[len]; + osmo_hexparse(res, buf, len); + if (0 != memcmp(buf, out, len)) { + printf("FAIL:\n"); + printf("OUT: %s\n", osmo_hexdump_nospc(out, len)); + printf("EXP: %s\n", osmo_hexdump_nospc(buf, len)); + } else + printf("\n"); +} + +static inline void test_gea(bool v4, char *kc, uint32_t iv, int dir, + uint16_t len, char *res) +{ + uint8_t out[len], ck[256]; + printf("len %d, dir %d, INPUT 0x%X -> ", len, dir, iv); + osmo_hexparse(kc, ck, len); + int t = gprs_cipher_run(out, len, v4 ? GPRS_ALGO_GEA4 : GPRS_ALGO_GEA3, ck, + iv, dir); + printf("%s ", t < 0 ? strerror(-t) : "OK"); + print_check(res, out, len); +} + +static inline void real_gea(uint32_t iov_ui, uint8_t sapi, uint32_t lfn, + uint32_t oc, enum gprs_cipher_direction d, char *kc, + uint16_t len, char *res) +{ + test_gea(false, kc, gprs_cipher_gen_input_ui(iov_ui, sapi, lfn, oc), d, + len, res); +} + +int main(int argc, char **argv) +{ + printf("GEA3 support: %d\n", gprs_cipher_supported(GPRS_ALGO_GEA3)); + printf("GEA4 support: %d\n", gprs_cipher_supported(GPRS_ALGO_GEA4)); + + /* GEA3 test vectors according to 3GPP TS 55.217 V6.1.0 and 55.218 V6.1.0 */ + test_gea(false, "2BD6459F82C5BC00", 0x8E9421A3, 0, 59, "5F359709DE950D0105B17B6C90194280F880B48DCCDC2AFEED415DBEF4354EEBB21D073CCBBFB2D706BD7AFFD371FC96E3970D143DCB2624054826"); + test_gea(false, "952C49104881FF48", 0x5064DB71, 0, 59, "FDC03D738C8E14FF0320E59AAF75760799E9DA78DD8F888471C4AEAAC1849633A26CD84F459D265B83D7D9B9A0B1E54F4D75E331640DF19E0DB0E0"); + test_gea(false, "EFA8B2229E720C2A", 0x4BDBD5E5, 1, 59, "4718A2ADFC90590949DDADAB406EC3B925F1AF1214673909DAAB96BB4C18B1374BB1E99445A81CC856E47C6E49E9DBB9873D0831B2175CA1E109BA"); + test_gea(false, "3451F23A43BD2C87", 0x893FE14F, 0, 59, "B46B1E284E3F8B63B86D9DF0915CFCEDDF2F061895BF9F82BF2593AE4847E94A4626C393CF8941CE15EA7812690D8415B88C5730FE1F5D410E16A2"); + test_gea(false, "CAA2639BE82435CF", 0x8FE17885, 1, 59, "9FEFAF155A26CF35603E727CDAA87BA067FD84FF98A50B7FF0EC8E95A0FB70E79CB93DEE2B7E9AB59D050E1262401571F349C68229DDF0DECC4E85"); + test_gea(false, "1ACA8B448B767B39", 0x4F7BC3B5, 0, 59, "514F6C3A3B5A55CA190092F7BB6E80EF3EDB738FCDCE2FF90BB387DDE75BBC32A04A67B898A3DFB8198FFFC37D437CF69E7F9C13B51A868720E750"); + + /* GEA4 test vectors according to 3GPP TS 55.226 V9.0.0 */ + test_gea(true, "D3C5D592327FB11C4035C6680AF8C6D1", 0x0A3A59B4, 0, 51, "6E217CE41EBEFB5EC8094C15974290065E42BABC9AE35654A53085CE68DFA4426A2FF0AD4AF3341006A3F84B7613ACB4FBDC34"); + test_gea(true, "3D43C388C9581E337FF1F97EB5C1F85E", 0x48571AB9, 0, 59, "FC7314EF00A63ED0116F236C5D25C54EEC56A5B71F9F18B4D7941F84E422ACBDE5EEA9A204679002D14F312F3DEE2A1AC917C3FBDC3696143C0F5D"); + test_gea(true, "A4496A64DF4F399F3B4506814A3E07A1", 0xEB04ADE2, 1, 59, "2AEB5970FB06B718027D048488AAF24FB3B74EA4A6B1242FF85B108FF816A303C72757D9AAD862B835D1D287DBC141D0A28D79D87BB137CD1198CD"); + + /* GEA3 test with real data */ + real_gea(0, 3, 26, 0, GPRS_CIPH_SGSN2MS, "0c09c6ed723a8400", 199, "b08edbbb7f0532ccbd9fef6e1917fa6815e6d7fa4c9ee629f89299ef9a5541bb23f05875487113c5d5166b7fd0bd04215c60cf8dc404f6cbbfb137191e87f5250a311e34c583f7d8a35346e35f287722b6f234b95b67037ee0711b25fbf8ee3fcb354ee2ba1981e57ce3eeaa4f7401a6a8328994c25b359821e4e7ee242f7daf4e597e006b9cce0b9e86d97cd1ff83a021203b93e83457f64f9794d4388e9b7c509ca5ad278b10082fa20d7ac48aea4cb787c19fcbcea95d63bc17e840380adc86688bcf293f2e"); + real_gea(0, 3, 25, 0, GPRS_CIPH_SGSN2MS, "0c09c6ed723a8400", 77, "91d2a1a85f6bb00429d76dcd1ca27f50c52e079ee9e990afc8635e25fa8c1007fac52e77035fd09821db893843c7a0666c4e69b5ecd3c9e4e7dc3405e4535115a650eebf698674e248ef13575c"); + real_gea(0, 3, 20, 0, GPRS_CIPH_MS2SGSN, "bf4575e165fec400", 134, "c43845418e7fc4b3651bc9c3cc9af0163373126c0b31f85d192280e20c981f426dc4a0514a377f76da3d1672c6a0f463513608b3291bacd5d17bb44c8cc5383c3cc85de94e9c594e0fd61d4f2b74b452c1edf07eb04e0e67f352337cc0fd932936841fa41ee5ff0d8f3fad9625a9dec1f12726b74595a1c40d429926ba7e8461f3fa2ae2c0d3"); + real_gea(0, 3, 21, 0, GPRS_CIPH_MS2SGSN, "bf4575e165fec400", 65, "7b4fc1922c183e6f61e8d2317216ed1d2497477d6f84947f8318df42621ad9affc0c42ba2fd63e06bce4720598d5ae919ca2996f2f1feaea2aa79827692471fd0a"); + + return 0; +} diff --git a/tests/gea/gea_test.ok b/tests/gea/gea_test.ok new file mode 100644 index 00000000..c2987521 --- /dev/null +++ b/tests/gea/gea_test.ok @@ -0,0 +1,15 @@ +GEA3 support: 1 +GEA4 support: 1 +len 59, dir 0, INPUT 0x8E9421A3 -> OK +len 59, dir 0, INPUT 0x5064DB71 -> OK +len 59, dir 1, INPUT 0x4BDBD5E5 -> OK +len 59, dir 0, INPUT 0x893FE14F -> OK +len 59, dir 1, INPUT 0x8FE17885 -> OK +len 59, dir 0, INPUT 0x4F7BC3B5 -> OK +len 51, dir 0, INPUT 0xA3A59B4 -> OK +len 59, dir 0, INPUT 0x48571AB9 -> OK +len 59, dir 1, INPUT 0xEB04ADE2 -> OK +len 199, dir 1, INPUT 0x9800001A -> OK +len 77, dir 1, INPUT 0x98000019 -> OK +len 134, dir 0, INPUT 0x98000014 -> OK +len 65, dir 0, INPUT 0x98000015 -> OK diff --git a/tests/testsuite.at b/tests/testsuite.at index 93373c19..0c7edf10 100644 --- a/tests/testsuite.at +++ b/tests/testsuite.at @@ -45,6 +45,12 @@ cat $abs_srcdir/msgb/msgb_test.ok > expout AT_CHECK([$abs_top_builddir/tests/msgb/msgb_test], [0], [expout], [ignore]) AT_CLEANUP +AT_SETUP([gea]) +AT_KEYWORDS([gea]) +cat $abs_srcdir/gea/gea_test.ok > expout +AT_CHECK([$abs_top_builddir/tests/gea/gea_test], [0], [expout]) +AT_CLEANUP + if ENABLE_MSGFILE AT_SETUP([msgfile]) AT_KEYWORDS([msgfile]) |