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strongswan
strongswan-ikev2-cavs.patch
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File strongswan-ikev2-cavs.patch of Package strongswan
diff -Nurp strongswan-5.1.3-orig/configure.ac strongswan-5.1.3/configure.ac --- strongswan-5.1.3-orig/configure.ac 2014-04-14 14:20:17.000000000 +0200 +++ strongswan-5.1.3/configure.ac 2015-02-17 19:52:25.254719000 +0100 @@ -274,6 +274,7 @@ ARG_ENABL_SET([integrity-test], [enable ARG_DISBL_SET([load-warning], [disable the charon plugin load option warning in starter.]) ARG_ENABL_SET([mediation], [enable IKEv2 Mediation Extension.]) ARG_ENABL_SET([unwind-backtraces],[use libunwind to create backtraces for memory leaks and segfaults.]) +ARG_ENABL_SET([cavs], [enable CAVS test helper binary.]) # compile options ARG_ENABL_SET([coverage], [enable lcov coverage report generation.]) ARG_ENABL_SET([leak-detective], [enable malloc hooks to find memory leaks.]) @@ -1383,6 +1384,7 @@ AM_CONDITIONAL(USE_SILENT_RULES, test x$ AM_CONDITIONAL(COVERAGE, test x$coverage = xtrue) AM_CONDITIONAL(USE_TKM, test x$tkm = xtrue) AM_CONDITIONAL(USE_CMD, test x$cmd = xtrue) +AM_CONDITIONAL(USE_CAVS, test x$cavs = xtrue) # ======================== # set global definitions @@ -1436,6 +1438,7 @@ AC_CONFIG_FILES([ src/Makefile src/include/Makefile src/libstrongswan/Makefile + src/libstrongswan/cavs/Makefile src/libstrongswan/plugins/aes/Makefile src/libstrongswan/plugins/cmac/Makefile src/libstrongswan/plugins/des/Makefile diff -Nurp strongswan-5.1.3-orig/src/libstrongswan/cavs/Makefile.am strongswan-5.1.3/src/libstrongswan/cavs/Makefile.am --- strongswan-5.1.3-orig/src/libstrongswan/cavs/Makefile.am 1970-01-01 01:00:00.000000000 +0100 +++ strongswan-5.1.3/src/libstrongswan/cavs/Makefile.am 2015-02-17 19:53:35.449035000 +0100 @@ -0,0 +1,7 @@ +AM_CPPFLAGS = \ + -I$(top_srcdir)/src/libstrongswan + +ipsec_PROGRAMS = strongswan_ikev2_cavs +strongswan_ikev2_cavs_SOURCE = strongswan_ikev2_cavs.c + +strongswan_ikev2_cavs_LDFLAGS = -lstrongswan -L../.libs diff -Nurp strongswan-5.1.3-orig/src/libstrongswan/cavs/strongswan_ikev2_cavs.c strongswan-5.1.3/src/libstrongswan/cavs/strongswan_ikev2_cavs.c --- strongswan-5.1.3-orig/src/libstrongswan/cavs/strongswan_ikev2_cavs.c 1970-01-01 01:00:00.000000000 +0100 +++ strongswan-5.1.3/src/libstrongswan/cavs/strongswan_ikev2_cavs.c 2015-02-17 19:53:35.455047000 +0100 @@ -0,0 +1,437 @@ +/* + * Copyright (C) 2015, Stephan Mueller <smueller@chronox.de> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, and the entire permission notice in its entirety, + * including the disclaimer of warranties. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * ALTERNATIVELY, this product may be distributed under the terms of + * the GNU General Public License, in which case the provisions of the GPL2 + * are required INSTEAD OF the above restrictions. (This clause is + * necessary due to a potential bad interaction between the GPL and + * the restrictions contained in a BSD-style copyright.) + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF + * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <sys/types.h> +#include <string.h> +#include <getopt.h> + +#include "../../config.h" +#include "utils/chunk.h" +#include "crypto/prf_plus.h" + +static int bin_char(unsigned char hex) +{ + if (48 <= hex && 57 >= hex) + return (hex - 48); + if (65 <= hex && 70 >= hex) + return (hex - 55); + if (97 <= hex && 102 >= hex) + return (hex - 87); + return 0; +} + +/* + * Convert hex representation into binary string + * @hex input buffer with hex representation + * @hexlen length of hex + * @bin output buffer with binary data + * @binlen length of already allocated bin buffer (should be at least + * half of hexlen -- if not, only a fraction of hexlen is converted) + */ +static void hex2bin(const char *hex, size_t hexlen, + unsigned char *bin, size_t binlen) +{ + size_t i = 0; + size_t chars = (binlen > (hexlen / 2)) ? (hexlen / 2) : binlen; + + for (i = 0; i < chars; i++) { + bin[i] = bin_char(hex[(i*2)]) << 4; + bin[i] |= bin_char(hex[((i*2)+1)]); + } +} + +/* + * Allocate sufficient space for binary representation of hex + * and convert hex into bin + * + * Caller must free bin + * @hex input buffer with hex representation + * @hexlen length of hex + * @bin return value holding the pointer to the newly allocated buffer + * @binlen return value holding the allocated size of bin + * + * return: 0 on success, !0 otherwise + */ +static int hex2bin_alloc(const char *hex, size_t hexlen, + unsigned char **bin, size_t *binlen) +{ + unsigned char *out = NULL; + size_t outlen = 0; + + if (!hexlen) + return -EINVAL; + + outlen = (hexlen + 1) / 2; + + out = calloc(1, outlen); + if (!out) + return -errno; + + hex2bin(hex, hexlen, out, outlen); + *bin = out; + *binlen = outlen; + return 0; +} + +static char hex_char_map_l[] = { '0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; +static char hex_char_map_u[] = { '0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; +static char hex_char(unsigned int bin, int u) +{ + if (bin < sizeof(hex_char_map_l)) + return (u) ? hex_char_map_u[bin] : hex_char_map_l[bin]; + return 'X'; +} + +/* + * Convert binary string into hex representation + * @bin input buffer with binary data + * @binlen length of bin + * @hex output buffer to store hex data + * @hexlen length of already allocated hex buffer (should be at least + * twice binlen -- if not, only a fraction of binlen is converted) + * @u case of hex characters (0=>lower case, 1=>upper case) + */ +static void bin2hex(const unsigned char *bin, size_t binlen, + char *hex, size_t hexlen, int u) +{ + size_t i = 0; + size_t chars = (binlen > (hexlen / 2)) ? (hexlen / 2) : binlen; + + for (i = 0; i < chars; i++) { + hex[(i*2)] = hex_char((bin[i] >> 4), u); + hex[((i*2)+1)] = hex_char((bin[i] & 0x0f), u); + } +} + +struct kdf_cavs { + unsigned char *gir; + size_t girlen; + unsigned char *girnew; + size_t girnewlen; + unsigned char *Ni; + size_t Nilen; + unsigned char *Nr; + size_t Nrlen; + unsigned char *SPIi; + size_t SPIilen; + unsigned char *SPIr; + size_t SPIrlen; + /* + * according to src/libstrongswan/crypto/prfs/prf.h: + * PRF_HMAC_SHA1 2 + * PRF_HMAC_SHA2_256 -> 5 + * PRF_HMAC_SHA2_384 -> 6 + * PRF_HMAC_SHA2_512 -> 7 + */ + unsigned int hash_algo; + + size_t dkmlen; +}; + +/** plugins to load */ +#undef PLUGINS +#define PLUGINS "openssl" + +static int ikev2kdf_cavs(struct kdf_cavs *test) +{ + int ret = -1; + chunk_t skeyseed; + chunk_t dkm; + chunk_t child_dkm; + chunk_t nonce_r = chunk_create(test->Nr, test->Nrlen); + chunk_t nonce_i = chunk_create(test->Ni, test->Nilen); + chunk_t fixed_nonce = chunk_cat("cc", nonce_i, nonce_r); + chunk_t full_nonce = chunk_cat("cc", nonce_i, nonce_r); + chunk_t spi_i = chunk_create(test->SPIi, test->SPIilen); + chunk_t spi_r = chunk_create(test->SPIr, test->SPIrlen); + chunk_t prf_plus_seed = chunk_cat("ccc", full_nonce, spi_i, spi_r); + chunk_t secret = chunk_create(test->gir, test->girlen); + chunk_t child_seed = chunk_cat("ccc", secret, nonce_i, nonce_r); + + /* rekey */ + chunk_t girnew = chunk_create(test->girnew, test->girnewlen); + chunk_t secret_new = chunk_cat("cc", girnew, full_nonce); + pseudo_random_function_t prf_alg = test->hash_algo; + prf_t *prf = NULL; + prf_plus_t *prf_plus = NULL; + + chunk_t skd; + +#define HEXLEN 2048 + char hex[HEXLEN]; + + /* initialize library */ + if (!library_init(NULL, "cavs")) + { + library_deinit(); + goto out; + } + atexit(library_deinit); + lib->plugins->load(lib->plugins, PLUGINS); + prf = lib->crypto->create_prf(lib->crypto, prf_alg); + + if (!prf) { + printf("PRF not found\n"); + goto out; + } + + /****** from derive_ike_keys *****/ + /* RFC 4306 section 2.14 */ + /* SKEYSEED = prf(Ni | Nr, g^ir) */ + + if (!prf->set_key(prf, fixed_nonce)) + goto out; + if (!prf->allocate_bytes(prf, secret, &skeyseed)) + goto out; + + /* {SK_d | SK_ai | SK_ar | SK_ei | SK_er | SK_pi | SK_pr } = prf+ + (SKEYSEED, Ni | Nr | SPIi | SPIr ) */ + if (!prf->set_key(prf, skeyseed)) + goto out; + prf_plus = prf_plus_create(prf, TRUE, prf_plus_seed); + + if (!prf_plus) + goto out; + /* PRF+ */ + if (!prf_plus->allocate_bytes(prf_plus, test->dkmlen, &dkm)) + goto out; + /* SK_d for child SA */ + skd.ptr = dkm.ptr; + skd.len = prf->get_key_size(prf); + + memset(hex, 0, HEXLEN); + bin2hex(skeyseed.ptr, skeyseed.len, hex, HEXLEN, 0); + printf("SKEYSEED = %s\n", hex); + memset(hex, 0, HEXLEN); + bin2hex(dkm.ptr, dkm.len, hex, HEXLEN, 0); + printf("DKM = %s\n", hex); + + + /******* from derive_child_keys *******/ + /* RFC 4306 section 2.17 option 1 */ + /* KEYMAT = prf+(SK_d, Ni | Nr) */ + DESTROY_IF(prf_plus); + if (!prf->set_key(prf, skd)) { + printf("setkey for child failed\n"); + goto out; + } + prf_plus = prf_plus_create(prf, TRUE, fixed_nonce); + if (!prf_plus->allocate_bytes(prf_plus, test->dkmlen, &child_dkm)) + goto out; + memset(hex, 0, HEXLEN); + bin2hex(child_dkm.ptr, child_dkm.len, hex, HEXLEN, 0); + printf("DKM(Child SA) = %s\n", hex); + + /******* from derive child keys ******/ + /* RFC 4306 section 2.17 option 2 */ + /* KEYMAT = prf+(SK_d, g^ir (new) | Ni | Nr ) */ + DESTROY_IF(prf_plus); + chunk_free(&child_dkm); + + if (!prf->set_key(prf, skd)) { + printf("setkey for child failed\n"); + goto out; + } + prf_plus = prf_plus_create(prf, TRUE, secret_new); + if (!prf_plus->allocate_bytes(prf_plus, test->dkmlen, &child_dkm)) + goto out; + memset(hex, 0, HEXLEN); + bin2hex(child_dkm.ptr, child_dkm.len, hex, HEXLEN, 0); + printf("DKM(Child SA D-H) = %s\n", hex); + + /********* rekey derive_ike_keys *********/ + /* RFC 4306 section 2.18 */ + /* SKEYSEED = prf(SK_d (old), [g^ir (new)] | Ni | Nr) */ + chunk_free(&skeyseed); + prf = lib->crypto->create_prf(lib->crypto, prf_alg); + if (!prf->set_key(prf, skd)) + goto out; + if (!prf->allocate_bytes(prf, secret_new, &skeyseed)) + goto out; + memset(hex, 0, HEXLEN); + bin2hex(skeyseed.ptr, skeyseed.len, hex, HEXLEN, 0); + printf("SKEYSEED(Rekey) = %s\n", hex); + + + chunk_free(&skeyseed); + chunk_free(&dkm); + chunk_free(&child_dkm); + DESTROY_IF(prf_plus); + chunk_free(&fixed_nonce); + chunk_free(&full_nonce); + chunk_free(&prf_plus_seed); + chunk_free(&child_seed); +out: /* there is no proper deallocation in error case -- we do not care */ + return ret; +} + +static void usage(void) +{ + fprintf(stderr, "\nStrongswan KDF CAVS Test\n\n"); + fprintf(stderr, "Usage:\n"); + fprintf(stderr, "\t-g --gir\tDiffie-Hellman shared secret\n"); + fprintf(stderr, "\t-n --girnew\tDiffie-Hellman shared secret (rekey)\n"); + fprintf(stderr, "\t-a --ni\t\tNi value\n"); + fprintf(stderr, "\t-b --nr\t\tNr value\n"); + fprintf(stderr, "\t-c --spii\tSPIi value\n"); + fprintf(stderr, "\t-d --spir\tSPIr value\n"); + fprintf(stderr, "\t-l --dkmlen\tLength of DKM\n"); + fprintf(stderr, "\t-h --hash\tHash algorithm:\n"); + fprintf(stderr, "\t\t\t2 -> SHA-1\n"); + fprintf(stderr, "\t\t\t5 -> SHA-256\n"); + fprintf(stderr, "\t\t\t6 -> SHA-384\n"); + fprintf(stderr, "\t\t\t7 -> SHA-512\n"); +} + +/* + * LD_LIBRARY_PATH="/usr/lib64/strongswan" ./strongswan-ikev2-cavs -g 4b2c1f971981a8ad8d0abeafabf38cf75fc8349c148142465ed9c8b516b8be52 -n 863f3c9d06efd39d2b907b97f8699e5dd5251ef64a2a176f36ee40c87d4f9330 -a 32b50d5f4a3763f3 -b 9206a04b26564cb1 -c 34c9e7c188868785 -d 3ff77d760d2b2199 -l 132 -h 2 + * + * SKEYSEED = a9a7b222b59f8f48645f28a1db5b5f5d7479cba7 +DKM = a14293677cc80ff8f9cc0eee30d895da9d8f405666e30ef0dfcb63c634a46002a2a63080e514a062768b76606f9fa5e992204fc5a670bde3f10d6b027113936a5c55b648a194ae587b0088d52204b702c979fa280870d2ed41efa9c549fd11198af1670b143d384bd275c5f594cf266b05ebadca855e4249520a441a81157435a7a56cc4 +DKM(Child SA) = 8059e3ee8810e6c3a91bc8bcd2a7a41151b8d0e6ae239c7b38093ad85ef4c5811a8e7b5d1cdabd9560b2d5e092d1f24e2d4b85eccdf0ad0dc9abd94b51ee71814ca6dbc8bb51b6309f5b9545c7eb35cf5580b1e521a8fe20754a2d883ba0c2cf285f524aea6545b33106bc03e614296d319d41d4b50b3f510b1c0a22f3e664994d234cb4 +DKM(Child SA D-H) = bb43244c1860ad65ee1e211ffe8bb3661750c8f89cb9f547df7f4fa61d37301628190e38c66232eab4b3ab14c400a5197dd3730ed4820a8a10394d51e1c0400052f63ebd36b0e7ef53aaed31eba4a5080d7d4b5666023a8bbb5ffb7857240f9a05884d1b7d2f933708450b7b3288f1fc863ab49fa901227cffc06e27899c7054d56fd74c +SKEYSEED(Rekey) = 63e81194946ebd05df7df5ebf5d8750056bf1f1d + */ + +int main(int argc, char *argv[]) +{ + struct kdf_cavs test; + int ret = 1; + int c = 0; + + memset(&test, 0, sizeof(struct kdf_cavs)); + while(1) + { + int opt_index = 0; + static struct option opts[] = + { + {"gir", 1, 0, 'g'}, + {"girnew", 1, 0, 'n'}, + {"ni", 1, 0, 'a'}, + {"nr", 1, 0, 'b'}, + {"spii", 1, 0, 'c'}, + {"spir", 1, 0, 'd'}, + {"dkmlen", 1, 0, 'l'}, + {"hash", 1, 0, 'h'}, + {0, 0, 0, 0} + }; + c = getopt_long(argc, argv, "g:n:a:b:c:d:l:h:", opts, &opt_index); + if(-1 == c) + break; + switch(c) + { + case 'g': + ret = hex2bin_alloc(optarg, strlen(optarg), + &test.gir, &test.girlen); + if (ret) + goto out; + break; + case 'n': + ret = hex2bin_alloc(optarg, strlen(optarg), + &test.girnew, + &test.girnewlen); + if (ret) + goto out; + break; + case 'a': + ret = hex2bin_alloc(optarg, strlen(optarg), + &test.Ni, + &test.Nilen); + if (ret) + goto out; + break; + case 'b': + ret = hex2bin_alloc(optarg, strlen(optarg), + &test.Nr, + &test.Nrlen); + if (ret) + goto out; + break; + case 'c': + ret = hex2bin_alloc(optarg, strlen(optarg), + &test.SPIi, + &test.SPIilen); + if (ret) + goto out; + break; + case 'd': + ret = hex2bin_alloc(optarg, strlen(optarg), + &test.SPIr, + &test.SPIrlen); + if (ret) + goto out; + break; + case 'l': + test.dkmlen = strtoul(optarg, NULL, 10); + break; + case 'h': + test.hash_algo = atoi(optarg); + switch (test.hash_algo) { + case 2: + case 5: + case 6: + case 7: + continue; + } + /* fall through */ + default: + usage(); + goto out; + } + } + + ret = ikev2kdf_cavs(&test); + +out: + if (test.gir) + free(test.gir); + if (test.girnew) + free(test.girnew); + if (test.Ni) + free(test.Ni); + if (test.Nr) + free(test.Nr); + if (test.SPIi) + free(test.SPIi); + if (test.SPIr) + free(test.SPIr); + return ret; +} diff -Nurp strongswan-5.1.3-orig/src/libstrongswan/Makefile.am strongswan-5.1.3/src/libstrongswan/Makefile.am --- strongswan-5.1.3-orig/src/libstrongswan/Makefile.am 2014-03-31 13:02:50.000000000 +0200 +++ strongswan-5.1.3/src/libstrongswan/Makefile.am 2015-02-17 19:53:09.420546000 +0100 @@ -506,4 +506,9 @@ endif if MONOLITHIC SUBDIRS += . endif + +if USE_CAVS + SUBDIRS += cavs +endif + SUBDIRS += tests
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