From 0bd8cc55c82bedce06f65f52ea446f82427d2c0d Mon Sep 17 00:00:00 2001 From: Nils Durner Date: Tue, 29 Jun 2010 15:58:34 +0000 Subject: HKDF (does not work yet) --- src/include/gnunet_crypto_lib.h | 21 +++++ src/util/Makefile.am | 7 ++ src/util/crypto_hkdf.c | 192 +++++++++++++++++++++++++++++++++++++ src/util/test_crypto_hkdf.c | 203 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 423 insertions(+) create mode 100644 src/util/crypto_hkdf.c create mode 100644 src/util/test_crypto_hkdf.c (limited to 'src') diff --git a/src/include/gnunet_crypto_lib.h b/src/include/gnunet_crypto_lib.h index d31dfcfa6..479e0e42d 100644 --- a/src/include/gnunet_crypto_lib.h +++ b/src/include/gnunet_crypto_lib.h @@ -511,6 +511,27 @@ int GNUNET_CRYPTO_hash_xorcmp (const GNUNET_HashCode * h1, const GNUNET_HashCode * target); +/** + * @brief Derive key + * @param xtr_algo hash algorithm for the extraction phase, GCRY_MD_... + * @param prf_algo hash algorithm for the expansion phase, GCRY_MD_... + * @param xts salt + * @param xts_len length of xts + * @param skm source key material + * @param skm_len length of skm + * @param ctx context info + * @param ctx_len length of ctx + * @param out_len desired length of the derived key + * @param result buffer for the derived key, allocated by caller + * @return GNUNET_YES on success + */ +int +GNUNET_CRYPTO_hkdf (int xtr_algo, int prf_algo, const void *xts, + const size_t xts_len, const void *skm, const size_t skm_len, + const void *ctx, const size_t ctx_len, const unsigned long long out_len, + void *result); + + /** * Create a new private key. Caller must free return value. * diff --git a/src/util/Makefile.am b/src/util/Makefile.am index 9cc402fc5..0b878c673 100644 --- a/src/util/Makefile.am +++ b/src/util/Makefile.am @@ -40,6 +40,7 @@ libgnunetutil_la_SOURCES = \ crypto_aes.c \ crypto_crc.c \ crypto_hash.c \ + crypto_hkdf.c \ crypto_ksk.c \ crypto_random.c \ crypto_rsa.c \ @@ -112,6 +113,7 @@ check_PROGRAMS = \ test_crypto_aes_weak \ test_crypto_crc \ test_crypto_hash \ +# test_crypto_hkdf \ test_crypto_ksk \ test_crypto_random \ test_crypto_rsa \ @@ -227,6 +229,11 @@ test_crypto_hash_SOURCES = \ test_crypto_hash_LDADD = \ $(top_builddir)/src/util/libgnunetutil.la +test_crypto_hkdf_SOURCES = \ + test_crypto_hkdf.c +test_crypto_hkdf_LDADD = \ + $(top_builddir)/src/util/libgnunetutil.la + test_crypto_ksk_SOURCES = \ test_crypto_ksk.c test_crypto_ksk_LDADD = \ diff --git a/src/util/crypto_hkdf.c b/src/util/crypto_hkdf.c new file mode 100644 index 000000000..efde3b868 --- /dev/null +++ b/src/util/crypto_hkdf.c @@ -0,0 +1,192 @@ +/* + Copyright (c) 2010 Nils Durner + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +/** + * @file src/util/crypto_hkdf.c + * @brief Hash-based KDF as defined in draft-krawczyk-hkdf-01 + * @see http://tools.ietf.org/html/draft-krawczyk-hkdf-01 + * @author Nils Durner + */ + +#include "platform.h" +#include "gnunet_crypto_lib.h" + +/** + * @brief Compute the HMAC + * @param mac gcrypt MAC handle + * @param key HMAC key + * @param key_len length of key + * @param buf message to be processed + * @param buf_len length of buf + * @return HMAC, freed by caller via gcry_md_close/_reset + */ +static void * +doHMAC (gcry_md_hd_t mac, const void *key, const size_t key_len, + const void *buf, const size_t buf_len) +{ + gcry_md_setkey (mac, key, key_len); + gcry_md_write (mac, buf, buf_len); + + return (void *) gcry_md_read (mac, 0); +} + +/** + * @brief Generate pseudo-random key + * @param mac gcrypt HMAC handle + * @param xts salt + * @param xts_len length of the salt + * @param skm source key material + * @param skm_len length of skm + * @param prk result buffer (allocated by caller; at least gcry_md_dlen() bytes) + * @return GNUNET_YES on success + */ +static int +getPRK (gcry_md_hd_t mac, const void *xts, const unsigned long long xts_len, + const void *skm, const unsigned long long skm_len, void *prk) +{ + void *ret; + + ret = doHMAC (mac, xts, xts_len, skm, skm_len); + if (ret == NULL) + return GNUNET_SYSERR; + memcpy (prk, ret, gcry_md_get_algo_dlen (gcry_md_get_algo (mac))); + + return GNUNET_YES; +} + +static void dump(void *p, unsigned int l) +{ + unsigned int i; + + printf("\n"); + for (i = 0; i < l; i++) + { + printf("%2x", ((char *) p)[i]); + } + printf("\n"); +} + +/** + * @brief Derive key + * @param xtr_algo hash algorithm for the extraction phase, GCRY_MD_... + * @param prf_algo hash algorithm for the expansion phase, GCRY_MD_... + * @param xts salt + * @param xts_len length of xts + * @param skm source key material + * @param skm_len length of skm + * @param ctx context info + * @param ctx_len length of ctx + * @param out_len desired length of the derived key + * @param result buffer for the derived key, allocated by caller + * @return GNUNET_YES on success + */ +int +GNUNET_CRYPTO_hkdf (int xtr_algo, int prf_algo, const void *xts, + const size_t xts_len, const void *skm, const size_t skm_len, + const void *ctx, const size_t ctx_len, const unsigned long long out_len, + void *result) +{ + void *prk, *hc, *plain; + unsigned long long plain_len; + unsigned long i, t, d; + unsigned int k, xtr_len; + int ret; + gcry_md_hd_t xtr, prf; + + prk = plain = NULL; + xtr_len = gcry_md_get_algo_dlen (xtr_algo); + k = gcry_md_get_algo_dlen (prf_algo); + gcry_md_open(&xtr, xtr_algo, GCRY_MD_FLAG_HMAC); + gcry_md_open(&prf, prf_algo, GCRY_MD_FLAG_HMAC); + + if (out_len > (2 ^ 32 * k) || !xtr_algo || !prf_algo) + return GNUNET_SYSERR; + + prk = GNUNET_malloc (xtr_len); + + memset (result, 0, out_len); + gcry_md_reset (xtr); + if (getPRK (xtr, xts, xts_len, skm, skm_len, prk) + != GNUNET_YES) + goto hkdf_error; +dump(prk, xtr_len); + + /* K(1) */ + plain_len = k + ctx_len + 4; + plain = GNUNET_malloc (plain_len); + memset (plain, 0, k); + memcpy (plain + k, ctx, ctx_len); + t = out_len / k; + if (t > 0) + { + memset (plain + k + ctx_len, 0, 4); + gcry_md_reset (prf); + hc = doHMAC (prf, prk, k, plain, plain_len); + if (hc == NULL) + goto hkdf_error; + memcpy (result, hc, k); + result += k; + } + + /* K(i+1) */ + for (i = 1; i < t; i++) + { + memcpy (plain, result - k, k); + memcpy (plain + k + ctx_len, &i, 4); + gcry_md_reset (prf); + hc = doHMAC (prf, prk, k, plain, plain_len); + if (hc == NULL) + goto hkdf_error; + memcpy (result, hc, k); + result += k; + } + + /* K(t):d */ + d = out_len % k; + if (d > 0) + { + if (t > 0) + memcpy (plain, result - k, k); + memcpy (plain + k + ctx_len, &i, 4); + gcry_md_reset (prf); + hc = doHMAC (prf, prk, k, plain, plain_len); + if (hc == NULL) + goto hkdf_error; + memcpy (result, hc, d); + } + + ret = GNUNET_YES; + goto hkdf_ok; + +hkdf_error: + ret = GNUNET_SYSERR; +hkdf_ok: + GNUNET_free (prk); + GNUNET_free_non_null (plain); + gcry_md_close (prf); + gcry_md_close (xtr); + + return ret; +} + + +/* end of crypto_hkdf.c */ diff --git a/src/util/test_crypto_hkdf.c b/src/util/test_crypto_hkdf.c new file mode 100644 index 000000000..d0078202d --- /dev/null +++ b/src/util/test_crypto_hkdf.c @@ -0,0 +1,203 @@ +/* + Copyright (c) 2010 Nils Durner + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +/** + * @file src/util/test_crypt_hkdf.c + * @brief Testcases for HKDF + * @author Nils Durner + */ + +#include "platform.h" +#include "gnunet_crypto_lib.h" + +void +tc1 () +{ + char ikm[22] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, + 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b }; + char salt[13] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, + 0x0a, 0x0b, 0x0c }; + char + info[10] = { 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9 }; + char okm[42] = { 0x3c, 0xb2, 0x5f, 0x25, 0xfa, 0xac, 0xd5, 0x7a, 0x90, 0x43, + 0x4f, 0x64, 0xd0, 0x36, 0x2f, 0x2a, 0x2d, 0x2d, 0x0a, 0x90, 0xcf, 0x1a, + 0x5a, 0x4c, 0x5d, 0xb0, 0x2d, 0x56, 0xec, 0xc4, 0xc5, 0xbf, 0x34, 0x00, + 0x72, 0x08, 0xd5, 0xb8, 0x87, 0x18, 0x58, 0x65 }; + char result[44]; + int l = 42; + + GNUNET_assert (GNUNET_CRYPTO_hkdf(GCRY_MD_SHA256, GCRY_MD_SHA256, salt, sizeof(salt), ikm, sizeof(ikm), info, sizeof(info), + l, result) == GNUNET_YES); + GNUNET_assert (memcmp(result, okm, l) == 0); + GNUNET_assert (memcmp(result + l, "\0", 2) == 0); +} + +void +tc2 () +{ + char ikm[80] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, + 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, + 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, + 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, + 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, + 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, + 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f }; + char salt[80] = { 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, + 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, + 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, + 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, + 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, + 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, + 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf }; + char info[80] = { 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, + 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, + 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, + 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, + 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, + 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, + 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff }; + char okm[82] = { 0xb1, 0x1e, 0x39, 0x8d, 0xc8, 0x03, 0x27, 0xa1, 0xc8, 0xe7, + 0xf7, 0x8c, 0x59, 0x6a, 0x49, 0x34, 0x4f, 0x01, 0x2e, 0xda, 0x2d, 0x4e, + 0xfa, 0xd8, 0xa0, 0x50, 0xcc, 0x4c, 0x19, 0xaf, 0xa9, 0x7c, 0x59, 0x04, + 0x5a, 0x99, 0xca, 0xc7, 0x82, 0x72, 0x71, 0xcb, 0x41, 0xc6, 0x5e, 0x59, + 0x0e, 0x09, 0xda, 0x32, 0x75, 0x60, 0x0c, 0x2f, 0x09, 0xb8, 0x36, 0x77, + 0x93, 0xa9, 0xac, 0xa3, 0xdb, 0x71, 0xcc, 0x30, 0xc5, 0x81, 0x79, 0xec, + 0x3e, 0x87, 0xc1, 0x4c, 0x01, 0xd5, 0xc1, 0xf3, 0x43, 0x4f, 0x1d, 0x87 }; + char result[84]; + int l = 82; + + GNUNET_assert (GNUNET_CRYPTO_hkdf(GCRY_MD_SHA256, GCRY_MD_SHA256, salt, sizeof(salt), ikm, sizeof(ikm), info, sizeof(info), + l, result) == GNUNET_YES); + GNUNET_assert (memcmp(result, okm, l) == 0); + GNUNET_assert (memcmp(result + l, "\0", 2) == 0); +} + +void +tc3 () +{ + char ikm[80] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, + 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b }; + char okm[42] = { 0x8d, 0xa4, 0xe7, 0x75, 0xa5, 0x63, 0xc1, 0x8f, 0x71, 0x5f, + 0x80, 0x2a, 0x06, 0x3c, 0x5a, 0x31, 0xb8, 0xa1, 0x1f, 0x5c, 0x5e, 0xe1, + 0x87, 0x9e, 0xc3, 0x45, 0x4e, 0x5f, 0x3c, 0x73, 0x8d, 0x2d, 0x9d, 0x20, + 0x13, 0x95, 0xfa, 0xa4, 0xb6, 0x1a, 0x96, 0xc8 }; + char result[44]; + int l = 42; + + GNUNET_assert (GNUNET_CRYPTO_hkdf(GCRY_MD_SHA256, GCRY_MD_SHA256, NULL, 0, ikm, sizeof(ikm), NULL, 0, + l, result) == GNUNET_YES); + GNUNET_assert (memcmp(result, okm, l) == 0); + GNUNET_assert (memcmp(result + l, "\0", 2) == 0); +} + +void +tc4 () +{ + char ikm[11] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, + 0x0b }; + char salt[13] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, + 0x0a, 0x0b, 0x0c }; + char + info[10] = { 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9 }; + char okm[42] = { 0x08, 0x5a, 0x01, 0xea, 0x1b, 0x10, 0xf3, 0x69, 0x33, 0x06, + 0x8b, 0x56, 0xef, 0xa5, 0xad, 0x81, 0xa4, 0xf1, 0x4b, 0x82, 0x2f, 0x5b, + 0x09, 0x15, 0x68, 0xa9, 0xcd, 0xd4, 0xf1, 0x55, 0xfd, 0xa2, 0xc2, 0x2e, + 0x42, 0x24, 0x78, 0xd3, 0x05, 0xf3, 0xf8, 0x96 }; + char result[84]; + int l = 42; + + GNUNET_assert (GNUNET_CRYPTO_hkdf(GCRY_MD_SHA1, GCRY_MD_SHA1, salt, sizeof(salt), ikm, sizeof(ikm), info, sizeof(info), + l, result) == GNUNET_YES); + GNUNET_assert (memcmp(result, okm, l) == 0); + GNUNET_assert (memcmp(result + l, "\0", 2) == 0); +} + +void +tc5 () +{ + char ikm[80] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, + 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, + 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, + 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, + 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, + 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, + 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f }; + char salt[80] = { 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, + 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, + 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, + 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, + 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, + 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, + 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf }; + char info[80] = { 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, + 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, + 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, + 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, + 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, + 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, + 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff }; + char okm[82] = { 0x0b, 0xd7, 0x70, 0xa7, 0x4d, 0x11, 0x60, 0xf7, 0xc9, 0xf1, + 0x2c, 0xd5, 0x91, 0x2a, 0x06, 0xeb, 0xff, 0x6a, 0xdc, 0xae, 0x89, 0x9d, + 0x92, 0x19, 0x1f, 0xe4, 0x30, 0x56, 0x73, 0xba, 0x2f, 0xfe, 0x8f, 0xa3, + 0xf1, 0xa4, 0xe5, 0xad, 0x79, 0xf3, 0xf3, 0x34, 0xb3, 0xb2, 0x02, 0xb2, + 0x17, 0x3c, 0x48, 0x6e, 0xa3, 0x7c, 0xe3, 0xd3, 0x97, 0xed, 0x03, 0x4c, + 0x7f, 0x9d, 0xfe, 0xb1, 0x5c, 0x5e, 0x92, 0x73, 0x36, 0xd0, 0x44, 0x1f, + 0x4c, 0x43, 0x00, 0xe2, 0xcf, 0xf0, 0xd0, 0x90, 0x0b, 0x52, 0xd3, 0xb4 }; + char result[84]; + int l = 82; + + GNUNET_assert (GNUNET_CRYPTO_hkdf(GCRY_MD_SHA1, GCRY_MD_SHA1, salt, sizeof(salt), ikm, sizeof(ikm), info, sizeof(info), + l, result) == GNUNET_YES); + GNUNET_assert (memcmp(result, okm, l) == 0); + GNUNET_assert (memcmp(result + l, "\0", 2) == 0); +} + +void +tc6 () +{ + char ikm[22] = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, + 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b }; + char okm[82] = { 0x0a, 0xc1, 0xaf, 0x70, 0x02, 0xb3, 0xd7, 0x61, 0xd1, 0xe5, + 0x52, 0x98, 0xda, 0x9d, 0x05, 0x06, 0xb9, 0xae, 0x52, 0x05, 0x72, 0x20, + 0xa3, 0x06, 0xe0, 0x7b, 0x6b, 0x87, 0xe8, 0xdf, 0x21, 0xd0, 0xea, 0x00, + 0x03, 0x3d, 0xe0, 0x39, 0x84, 0xd3, 0x49, 0x18 }; + char result[84]; + int l = 82; + + GNUNET_assert (GNUNET_CRYPTO_hkdf(GCRY_MD_SHA1, GCRY_MD_SHA1, NULL, 0, ikm, sizeof(ikm), NULL, 0, + l, result) == GNUNET_YES); + GNUNET_assert (memcmp(result, okm, l) == 0); + GNUNET_assert (memcmp(result + l, "\0", 2) == 0); +} + +int +main () +{ + GNUNET_log_setup ("test-crypto-hkdf", "WARNING", NULL); + tc1(); + tc2(); + tc3(); + tc4(); + tc5(); + tc6(); + return 0; +} -- cgit v1.2.3