mirror of https://gerrit.osmocom.org/libosmocore
Add GEA3 & GEA4 ciphers
Corresponding test code include both official test vectors from the specs and data from over-the-air tests. This obsoletes libosmo-crypt-a53 as it was last missing piece unimplemented in libosmogsm. Change-Id: I939e4f6b91b4a7c591ef3761fe2d46ed1c2fb2d3 Related: OS#1582
This commit is contained in:
Max
parent
02a6672885
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4f169500df
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@ -62,6 +62,7 @@ tests/testsuite.log
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tests/utils/utils_test
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tests/stats/stats_test
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tests/kasumi/kasumi_test
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tests/gea/gea_test
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tests/sms/sms_test
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tests/timer/timer_test
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tests/msgfile/msgfile_test
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@ -131,7 +131,7 @@ endif
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noinst_HEADERS = \
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osmocom/core/timer_compat.h \
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osmocom/gsm/kasumi.h
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osmocom/gsm/kasumi.h osmocom/gsm/gea.h
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osmocom/core/bit%gen.h: osmocom/core/bitXXgen.h.tpl
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$(AM_V_GEN)$(MKDIR_P) $(dir $@)
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@ -3,6 +3,8 @@
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/utils.h>
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#include <stdint.h>
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#define GSM0464_CIPH_MAX_BLOCK 1523
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/* 3GPP TS 24.008 § 10.5.5.3 */
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@ -0,0 +1,17 @@
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/*
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* GEA3 header
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*
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* See gea.c for details
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*/
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#pragma once
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#include <osmocom/crypt/gprs_cipher.h>
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#include <stdint.h>
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int gea3(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv,
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enum gprs_cipher_direction direct);
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int gea4(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv,
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enum gprs_cipher_direction direct);
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@ -24,10 +24,10 @@ libgsmint_la_SOURCES = a5.c rxlev_stat.c tlv_parser.c comp128.c comp128v23.c \
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conv_tch_afs_6_7_gen.c conv_tch_afs_5_9_gen.c \
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conv_tch_afs_5_15_gen.c conv_tch_afs_4_75_gen.c \
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auth_core.c auth_comp128v1.c auth_comp128v23.c \
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auth_milenage.c milenage/aes-encblock.c \
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auth_milenage.c milenage/aes-encblock.c gea.c \
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milenage/aes-internal.c milenage/aes-internal-enc.c \
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milenage/milenage.c gan.c ipa.c gsm0341.c apn.c \
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gsup.c
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gsup.c gprs_gea.c
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libgsmint_la_LDFLAGS = -no-undefined
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libgsmint_la_LIBADD = ../libosmocore.la
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@ -0,0 +1,60 @@
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/*
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* gea.c
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*
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* Implementation of GEA3 and GEA4
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*
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* Copyright (C) 2016 by Sysmocom s.f.m.c. GmbH
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <osmocom/core/bits.h>
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#include <osmocom/crypt/gprs_cipher.h>
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#include <osmocom/crypt/auth.h>
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#include <osmocom/gsm/kasumi.h>
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#include <stdint.h>
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#include <string.h>
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/*! \brief Performs the GEA4 algorithm as in 3GPP TS 55.226 V9.0.0
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* \param[in,out] out Buffer for gamma for encrypted/decrypted
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* \param[in] len Length of out, in bytes
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* \param[in] kc Buffer with the ciphering key
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* \param[in] iv Init vector
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* \param[in] direct Direction: 0 (MS -> SGSN) or 1 (SGSN -> MS)
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*/
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int gea4(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv,
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enum gprs_cipher_direction direction)
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{
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_kasumi_kgcore(0xFF, 0, iv, direction, kc, out, len * 8);
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return 0;
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}
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/*! \brief Performs the GEA3 algorithm as in 3GPP TS 55.216 V6.2.0
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* \param[in,out] out Buffer for gamma for encrypted/decrypted
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* \param[in] len Length of out, in bytes
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* \param[in] kc Buffer with the ciphering key
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* \param[in] iv Init vector
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* \param[in] direct Direction: 0 (MS -> SGSN) or 1 (SGSN -> MS)
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*/
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int gea3(uint8_t *out, uint16_t len, uint8_t *kc, uint32_t iv,
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enum gprs_cipher_direction direction)
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{
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uint8_t ck[gprs_cipher_key_length(GPRS_ALGO_GEA4)];
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osmo_c4(ck, kc);
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return gea4(out, len, ck, iv, direction);
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}
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@ -0,0 +1,48 @@
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/*
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* gprs_gea.c
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*
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* GEA 3 & 4 plugin
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*
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* Copyright (C) 2016 by Sysmocom s.f.m.c. GmbH
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <osmocom/crypt/gprs_cipher.h>
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#include <osmocom/gsm/gea.h>
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#include <stdint.h>
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static struct gprs_cipher_impl gea3_impl = {
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.algo = GPRS_ALGO_GEA3,
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.name = "GEA3 (libosmogsm built-in)",
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.priority = 100,
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.run = &gea3,
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};
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static struct gprs_cipher_impl gea4_impl = {
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.algo = GPRS_ALGO_GEA4,
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.name = "GEA4 (libosmogsm built-in)",
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.priority = 100,
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.run = &gea4,
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};
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static __attribute__((constructor)) void on_dso_load_gea(void)
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{
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gprs_cipher_register(&gea3_impl);
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gprs_cipher_register(&gea4_impl);
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}
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@ -7,7 +7,7 @@ check_PROGRAMS = timer/timer_test sms/sms_test ussd/ussd_test \
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conv/conv_test auth/milenage_test lapd/lapd_test \
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gsm0808/gsm0808_test gsm0408/gsm0408_test \
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gb/bssgp_fc_test gb/gprs_bssgp_test gb/gprs_ns_test \
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gprs/gprs_test kasumi/kasumi_test \
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gprs/gprs_test kasumi/kasumi_test gea/gea_test \
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logging/logging_test fr/fr_test codec/codec_test \
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loggingrb/loggingrb_test strrb/strrb_test \
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vty/vty_test comp128/comp128_test utils/utils_test \
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@ -37,6 +37,9 @@ comp128_comp128_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/
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auth_milenage_test_SOURCES = auth/milenage_test.c
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auth_milenage_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
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gea_gea_test_SOURCES = gea/gea_test.c
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gea_gea_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
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bits_bitrev_test_SOURCES = bits/bitrev_test.c
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bits_bitrev_test_LDADD = $(top_builddir)/src/libosmocore.la
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@ -146,7 +149,7 @@ EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE) \
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lapd/lapd_test.ok gsm0408/gsm0408_test.ok \
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gsm0808/gsm0808_test.ok gb/bssgp_fc_tests.err \
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gb/bssgp_fc_tests.ok gb/bssgp_fc_tests.sh \
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gb/gprs_bssgp_test.ok gb/gprs_ns_test.ok \
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gb/gprs_bssgp_test.ok gb/gprs_ns_test.ok gea/gea_test.ok \
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gprs/gprs_test.ok kasumi/kasumi_test.ok codec/codec_test.ok \
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msgfile/msgfile_test.ok msgfile/msgconfig.cfg \
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logging/logging_test.ok logging/logging_test.err \
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@ -0,0 +1,68 @@
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#include <osmocom/core/bits.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/crypt/gprs_cipher.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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static inline void print_check(char *res, uint8_t *out, uint16_t len)
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{
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uint8_t buf[len];
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osmo_hexparse(res, buf, len);
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if (0 != memcmp(buf, out, len)) {
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printf("FAIL:\n");
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printf("OUT: %s\n", osmo_hexdump_nospc(out, len));
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printf("EXP: %s\n", osmo_hexdump_nospc(buf, len));
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} else
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printf("\n");
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}
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static inline void test_gea(bool v4, char *kc, uint32_t iv, int dir,
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uint16_t len, char *res)
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{
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uint8_t out[len], ck[256];
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printf("len %d, dir %d, INPUT 0x%X -> ", len, dir, iv);
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osmo_hexparse(kc, ck, len);
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int t = gprs_cipher_run(out, len, v4 ? GPRS_ALGO_GEA4 : GPRS_ALGO_GEA3, ck,
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iv, dir);
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printf("%s ", t < 0 ? strerror(-t) : "OK");
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print_check(res, out, len);
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}
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static inline void real_gea(uint32_t iov_ui, uint8_t sapi, uint32_t lfn,
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uint32_t oc, enum gprs_cipher_direction d, char *kc,
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uint16_t len, char *res)
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{
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test_gea(false, kc, gprs_cipher_gen_input_ui(iov_ui, sapi, lfn, oc), d,
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len, res);
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}
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int main(int argc, char **argv)
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{
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printf("GEA3 support: %d\n", gprs_cipher_supported(GPRS_ALGO_GEA3));
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printf("GEA4 support: %d\n", gprs_cipher_supported(GPRS_ALGO_GEA4));
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/* GEA3 test vectors according to 3GPP TS 55.217 V6.1.0 and 55.218 V6.1.0 */
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test_gea(false, "2BD6459F82C5BC00", 0x8E9421A3, 0, 59, "5F359709DE950D0105B17B6C90194280F880B48DCCDC2AFEED415DBEF4354EEBB21D073CCBBFB2D706BD7AFFD371FC96E3970D143DCB2624054826");
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test_gea(false, "952C49104881FF48", 0x5064DB71, 0, 59, "FDC03D738C8E14FF0320E59AAF75760799E9DA78DD8F888471C4AEAAC1849633A26CD84F459D265B83D7D9B9A0B1E54F4D75E331640DF19E0DB0E0");
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test_gea(false, "EFA8B2229E720C2A", 0x4BDBD5E5, 1, 59, "4718A2ADFC90590949DDADAB406EC3B925F1AF1214673909DAAB96BB4C18B1374BB1E99445A81CC856E47C6E49E9DBB9873D0831B2175CA1E109BA");
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test_gea(false, "3451F23A43BD2C87", 0x893FE14F, 0, 59, "B46B1E284E3F8B63B86D9DF0915CFCEDDF2F061895BF9F82BF2593AE4847E94A4626C393CF8941CE15EA7812690D8415B88C5730FE1F5D410E16A2");
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test_gea(false, "CAA2639BE82435CF", 0x8FE17885, 1, 59, "9FEFAF155A26CF35603E727CDAA87BA067FD84FF98A50B7FF0EC8E95A0FB70E79CB93DEE2B7E9AB59D050E1262401571F349C68229DDF0DECC4E85");
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test_gea(false, "1ACA8B448B767B39", 0x4F7BC3B5, 0, 59, "514F6C3A3B5A55CA190092F7BB6E80EF3EDB738FCDCE2FF90BB387DDE75BBC32A04A67B898A3DFB8198FFFC37D437CF69E7F9C13B51A868720E750");
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/* GEA4 test vectors according to 3GPP TS 55.226 V9.0.0 */
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test_gea(true, "D3C5D592327FB11C4035C6680AF8C6D1", 0x0A3A59B4, 0, 51, "6E217CE41EBEFB5EC8094C15974290065E42BABC9AE35654A53085CE68DFA4426A2FF0AD4AF3341006A3F84B7613ACB4FBDC34");
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test_gea(true, "3D43C388C9581E337FF1F97EB5C1F85E", 0x48571AB9, 0, 59, "FC7314EF00A63ED0116F236C5D25C54EEC56A5B71F9F18B4D7941F84E422ACBDE5EEA9A204679002D14F312F3DEE2A1AC917C3FBDC3696143C0F5D");
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test_gea(true, "A4496A64DF4F399F3B4506814A3E07A1", 0xEB04ADE2, 1, 59, "2AEB5970FB06B718027D048488AAF24FB3B74EA4A6B1242FF85B108FF816A303C72757D9AAD862B835D1D287DBC141D0A28D79D87BB137CD1198CD");
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/* GEA3 test with real data */
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real_gea(0, 3, 26, 0, GPRS_CIPH_SGSN2MS, "0c09c6ed723a8400", 199, "b08edbbb7f0532ccbd9fef6e1917fa6815e6d7fa4c9ee629f89299ef9a5541bb23f05875487113c5d5166b7fd0bd04215c60cf8dc404f6cbbfb137191e87f5250a311e34c583f7d8a35346e35f287722b6f234b95b67037ee0711b25fbf8ee3fcb354ee2ba1981e57ce3eeaa4f7401a6a8328994c25b359821e4e7ee242f7daf4e597e006b9cce0b9e86d97cd1ff83a021203b93e83457f64f9794d4388e9b7c509ca5ad278b10082fa20d7ac48aea4cb787c19fcbcea95d63bc17e840380adc86688bcf293f2e");
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real_gea(0, 3, 25, 0, GPRS_CIPH_SGSN2MS, "0c09c6ed723a8400", 77, "91d2a1a85f6bb00429d76dcd1ca27f50c52e079ee9e990afc8635e25fa8c1007fac52e77035fd09821db893843c7a0666c4e69b5ecd3c9e4e7dc3405e4535115a650eebf698674e248ef13575c");
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real_gea(0, 3, 20, 0, GPRS_CIPH_MS2SGSN, "bf4575e165fec400", 134, "c43845418e7fc4b3651bc9c3cc9af0163373126c0b31f85d192280e20c981f426dc4a0514a377f76da3d1672c6a0f463513608b3291bacd5d17bb44c8cc5383c3cc85de94e9c594e0fd61d4f2b74b452c1edf07eb04e0e67f352337cc0fd932936841fa41ee5ff0d8f3fad9625a9dec1f12726b74595a1c40d429926ba7e8461f3fa2ae2c0d3");
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real_gea(0, 3, 21, 0, GPRS_CIPH_MS2SGSN, "bf4575e165fec400", 65, "7b4fc1922c183e6f61e8d2317216ed1d2497477d6f84947f8318df42621ad9affc0c42ba2fd63e06bce4720598d5ae919ca2996f2f1feaea2aa79827692471fd0a");
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return 0;
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}
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@ -0,0 +1,15 @@
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GEA3 support: 1
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GEA4 support: 1
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len 59, dir 0, INPUT 0x8E9421A3 -> OK
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len 59, dir 0, INPUT 0x5064DB71 -> OK
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len 59, dir 1, INPUT 0x4BDBD5E5 -> OK
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len 59, dir 0, INPUT 0x893FE14F -> OK
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len 59, dir 1, INPUT 0x8FE17885 -> OK
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len 59, dir 0, INPUT 0x4F7BC3B5 -> OK
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len 51, dir 0, INPUT 0xA3A59B4 -> OK
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len 59, dir 0, INPUT 0x48571AB9 -> OK
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len 59, dir 1, INPUT 0xEB04ADE2 -> OK
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len 199, dir 1, INPUT 0x9800001A -> OK
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len 77, dir 1, INPUT 0x98000019 -> OK
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len 134, dir 0, INPUT 0x98000014 -> OK
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len 65, dir 0, INPUT 0x98000015 -> OK
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@ -45,6 +45,12 @@ cat $abs_srcdir/msgb/msgb_test.ok > expout
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AT_CHECK([$abs_top_builddir/tests/msgb/msgb_test], [0], [expout], [ignore])
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AT_CLEANUP
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AT_SETUP([gea])
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AT_KEYWORDS([gea])
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cat $abs_srcdir/gea/gea_test.ok > expout
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AT_CHECK([$abs_top_builddir/tests/gea/gea_test], [0], [expout])
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AT_CLEANUP
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if ENABLE_MSGFILE
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AT_SETUP([msgfile])
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AT_KEYWORDS([msgfile])
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