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Diffstat (limited to '')
| -rw-r--r-- | tests/tls-neg-ext4-key.c | 503 |
1 files changed, 503 insertions, 0 deletions
diff --git a/tests/tls-neg-ext4-key.c b/tests/tls-neg-ext4-key.c new file mode 100644 index 0000000..3d9db85 --- /dev/null +++ b/tests/tls-neg-ext4-key.c @@ -0,0 +1,503 @@ +/* + * Copyright (C) 2017 Red Hat, Inc. + * + * Author: Nikos Mavrogiannopoulos + * + * This file is part of GnuTLS. + * + * GnuTLS 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. + * + * GnuTLS 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 Lesser General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/> + */ + +/* This tests TLS negotiation using the gnutls_privkey_import_ext2() APIs */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#ifndef _WIN32 +# include <netinet/in.h> +# include <sys/socket.h> +# include <arpa/inet.h> +#endif +#include <unistd.h> +#include <gnutls/gnutls.h> +#include <gnutls/x509.h> +#include <gnutls/abstract.h> +#include <assert.h> +#include "cert-common.h" +#include "eagain-common.h" +#include "utils.h" + +static void tls_log_func(int level, const char *str) +{ + fprintf(stderr, "<%d> %s", level, str); +} + +const gnutls_datum_t raw_data = { + (void *) "hello", + 5 +}; + + +struct key_cb_data { + gnutls_privkey_t rkey; /* the real thing */ + unsigned pk; + unsigned sig; + unsigned bits; +}; + +static int key_cb_info_func(gnutls_privkey_t key, unsigned int flags, void *userdata) +{ + struct key_cb_data *p = userdata; + + if (flags & GNUTLS_PRIVKEY_INFO_PK_ALGO) + return p->pk; + else if (flags & GNUTLS_PRIVKEY_INFO_PK_ALGO_BITS) + return p->bits; + else if (flags & GNUTLS_PRIVKEY_INFO_HAVE_SIGN_ALGO) { + unsigned sig = GNUTLS_FLAGS_TO_SIGN_ALGO(flags); + + if (sig == p->sig) + return 1; + + return 0; + } + + return -1; +} + +static +int key_cb_sign_data_func(gnutls_privkey_t key, gnutls_sign_algorithm_t sig, + void* userdata, unsigned int flags, const gnutls_datum_t *data, + gnutls_datum_t *signature) +{ + struct key_cb_data *p = userdata; + + if (debug) + fprintf(stderr, "signing data with: %s\n", gnutls_sign_get_name(sig)); + return gnutls_privkey_sign_data2(p->rkey, sig, 0, data, signature); +} + +static +int key_cb_sign_hash_func(gnutls_privkey_t key, gnutls_sign_algorithm_t sig, + void* userdata, unsigned int flags, const gnutls_datum_t *data, + gnutls_datum_t *signature) +{ + struct key_cb_data *p = userdata; + + if (sig == GNUTLS_SIGN_RSA_RAW) { + if (debug) + fprintf(stderr, "signing digestinfo with: raw RSA\n"); + return gnutls_privkey_sign_hash(p->rkey, 0, GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA, data, signature); + } else { + if (debug) + fprintf(stderr, "signing hash with: %s\n", gnutls_sign_get_name(sig)); + return gnutls_privkey_sign_hash2(p->rkey, sig, 0, data, signature); + } +} + +static +int key_cb_decrypt_func(gnutls_privkey_t key, void *userdata, const gnutls_datum_t *ciphertext, + gnutls_datum_t *plaintext) +{ + struct key_cb_data *p = userdata; + + return gnutls_privkey_decrypt_data(p->rkey, 0, ciphertext, plaintext); +} + +static void key_cb_deinit_func(gnutls_privkey_t key, void* userdata) +{ + struct key_cb_data *p = userdata; + gnutls_privkey_deinit(p->rkey); + free(userdata); +} + +#define testfail(fmt, ...) \ + fail("%s: "fmt, name, ##__VA_ARGS__) + +static gnutls_privkey_t load_virt_privkey(const char *name, const gnutls_datum_t *txtkey, + gnutls_pk_algorithm_t pk, gnutls_sign_algorithm_t sig, + int exp_ret) +{ + gnutls_privkey_t privkey; + struct key_cb_data *userdata; + int ret; + + userdata = calloc(1, sizeof(struct key_cb_data)); + if (userdata == NULL) { + testfail("memory error\n"); + } + + ret = gnutls_privkey_init(&privkey); + if (ret < 0) + testfail("gnutls_privkey_init\n"); + + ret = gnutls_privkey_init(&userdata->rkey); + if (ret < 0) + testfail("gnutls_privkey_init\n"); + + ret = + gnutls_privkey_import_x509_raw(userdata->rkey, txtkey, GNUTLS_X509_FMT_PEM, NULL, 0); + if (ret < 0) + testfail("gnutls_privkey_import\n"); + + gnutls_privkey_get_pk_algorithm(userdata->rkey, &userdata->bits); + + userdata->pk = pk; + userdata->sig = sig; + + ret = gnutls_privkey_import_ext4(privkey, userdata, key_cb_sign_data_func, + key_cb_sign_hash_func, key_cb_decrypt_func, + key_cb_deinit_func, key_cb_info_func, + GNUTLS_PRIVKEY_IMPORT_AUTO_RELEASE); + if (ret < 0) { + if (ret == exp_ret) { + gnutls_privkey_deinit(userdata->rkey); + gnutls_privkey_deinit(privkey); + free(userdata); + return NULL; + } + testfail("gnutls_privkey_import_ext2: %s\n", gnutls_strerror(ret)); + } + + return privkey; +} + +static +void try_with_key(const char *name, const char *client_prio, + gnutls_kx_algorithm_t client_kx, + gnutls_sign_algorithm_t server_sign_algo, + gnutls_sign_algorithm_t client_sign_algo, + const gnutls_datum_t *serv_cert, + gnutls_privkey_t key, + int exp_serv_err) +{ + int ret; + gnutls_pcert_st pcert_list[4]; + unsigned pcert_list_size; + /* Server stuff. */ + gnutls_certificate_credentials_t s_xcred; + gnutls_session_t server; + int sret = GNUTLS_E_AGAIN; + /* Client stuff. */ + gnutls_certificate_credentials_t c_xcred; + gnutls_session_t client; + int cret = GNUTLS_E_AGAIN, version; + const char *err; + + /* General init. */ + gnutls_global_set_log_function(tls_log_func); + if (debug) + gnutls_global_set_log_level(6); + + reset_buffers(); + /* Init server */ + gnutls_certificate_allocate_credentials(&s_xcred); + + pcert_list_size = sizeof(pcert_list)/sizeof(pcert_list[0]); + ret = gnutls_pcert_list_import_x509_raw(pcert_list, &pcert_list_size, + serv_cert, GNUTLS_X509_FMT_PEM, 0); + if (ret < 0) { + testfail("error in gnutls_pcert_list_import_x509_raw: %s\n", gnutls_strerror(ret)); + } + + ret = gnutls_certificate_set_key(s_xcred, NULL, 0, pcert_list, + pcert_list_size, key); + if (ret < 0) { + testfail("Could not set key/cert: %s\n", gnutls_strerror(ret)); + } + + gnutls_init(&server, GNUTLS_SERVER); + gnutls_credentials_set(server, GNUTLS_CRD_CERTIFICATE, + s_xcred); + + assert(gnutls_priority_set_direct(server, "NORMAL", NULL)>=0); + gnutls_transport_set_push_function(server, server_push); + gnutls_transport_set_pull_function(server, server_pull); + gnutls_transport_set_ptr(server, server); + + /* Init client */ + + ret = gnutls_certificate_allocate_credentials(&c_xcred); + if (ret < 0) + exit(1); + +#if 0 + ret = gnutls_certificate_set_x509_trust_mem(c_xcred, &ca_cert, GNUTLS_X509_FMT_PEM); + if (ret < 0) + exit(1); +#endif + ret = gnutls_init(&client, GNUTLS_CLIENT); + if (ret < 0) + exit(1); + + ret = gnutls_credentials_set(client, GNUTLS_CRD_CERTIFICATE, + c_xcred); + if (ret < 0) + exit(1); + + gnutls_transport_set_push_function(client, client_push); + gnutls_transport_set_pull_function(client, client_pull); + gnutls_transport_set_ptr(client, client); + + ret = gnutls_priority_set_direct(client, client_prio, &err); + if (ret < 0) { + if (ret == GNUTLS_E_INVALID_REQUEST) + fprintf(stderr, "Error in %s\n", err); + exit(1); + } + if (exp_serv_err) { + HANDSHAKE_EXPECT(client, server, GNUTLS_E_AGAIN, exp_serv_err); + goto cleanup; + } else { + HANDSHAKE(client, server); + } + + if (gnutls_kx_get(client) != client_kx) { + testfail("got unexpected key exchange algorithm: %s (expected %s)\n", gnutls_kx_get_name(gnutls_kx_get(client)), + gnutls_kx_get_name(client_kx)); + exit(1); + } + + /* test signature algorithm match */ + version = gnutls_protocol_get_version(client); + if (version >= GNUTLS_TLS1_2) { + ret = gnutls_sign_algorithm_get(server); + if (ret != (int)server_sign_algo && server_sign_algo != 0) { + testfail("got unexpected server signature algorithm: %d/%s\n", ret, gnutls_sign_get_name(ret)); + exit(1); + } + + ret = gnutls_sign_algorithm_get_client(server); + if (ret != (int)client_sign_algo && client_sign_algo != 0) { + testfail("got unexpected client signature algorithm: %d/%s\n", ret, gnutls_sign_get_name(ret)); + exit(1); + } + + ret = gnutls_sign_algorithm_get(client); + if (ret != (int)server_sign_algo && server_sign_algo != 0) { + testfail("cl: got unexpected server signature algorithm: %d/%s\n", ret, gnutls_sign_get_name(ret)); + exit(1); + } + + ret = gnutls_sign_algorithm_get_client(client); + if (ret != (int)client_sign_algo && client_sign_algo != 0) { + testfail("cl: got unexpected client signature algorithm: %d/%s\n", ret, gnutls_sign_get_name(ret)); + exit(1); + } + } + + gnutls_bye(client, GNUTLS_SHUT_RDWR); + gnutls_bye(server, GNUTLS_SHUT_RDWR); + + cleanup: + gnutls_deinit(client); + gnutls_deinit(server); + + gnutls_certificate_free_credentials(s_xcred); + gnutls_certificate_free_credentials(c_xcred); +} + +typedef struct test_st { + const char *name; + gnutls_pk_algorithm_t pk; + const char *prio; + const gnutls_datum_t *cert; + const gnutls_datum_t *key; + gnutls_kx_algorithm_t exp_kx; + unsigned sig; + int exp_key_err; + int exp_serv_err; +} test_st; + +static const test_st tests[] = { + {.name = "tls1.2 ecc key", + .pk = GNUTLS_PK_ECDSA, + .prio = "NORMAL:-KX-ALL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_localhost_ecc_cert, + .key = &server_ca3_ecc_key, + .sig = GNUTLS_SIGN_ECDSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_ECDSA + }, + {.name = "tls1.0 ecc key", + .pk = GNUTLS_PK_ECDSA, + .prio = "NORMAL:-KX-ALL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.0", + .cert = &server_ca3_localhost_ecc_cert, + .key = &server_ca3_ecc_key, + .sig = GNUTLS_SIGN_ECDSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_ECDSA + }, + {.name = "tls1.1 ecc key", + .pk = GNUTLS_PK_ECDSA, + .prio = "NORMAL:-KX-ALL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.1", + .cert = &server_ca3_localhost_ecc_cert, + .key = &server_ca3_ecc_key, + .sig = GNUTLS_SIGN_ECDSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_ECDSA + }, + {.name = "tls1.2 rsa-sign key", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .sig = GNUTLS_SIGN_RSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA + }, + {.name = "tls1.0 rsa-sign key", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.0", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .sig = GNUTLS_SIGN_RSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA + }, + {.name = "tls1.0 rsa-decrypt key", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:-KX-ALL:+RSA:-VERS-ALL:+VERS-TLS1.0", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .exp_kx = GNUTLS_KX_RSA + }, + {.name = "tls1.1 rsa-sign key", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.1", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .sig = GNUTLS_SIGN_RSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA + }, + {.name = "tls1.2 rsa-sign key with rsa-pss sigs prioritized", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-SIGN-ALL:+SIGN-RSA-PSS-SHA256:+SIGN-RSA-PSS-SHA384:+SIGN-RSA-PSS-SHA512:+SIGN-RSA-SHA256:+SIGN-RSA-SHA384:+SIGN-RSA-SHA512:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .sig = GNUTLS_SIGN_RSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA + }, + {.name = "tls1.2 rsa-pss-sign key", + .pk = GNUTLS_PK_RSA_PSS, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_rsa_pss2_cert, + .key = &server_ca3_rsa_pss2_key, + .sig = GNUTLS_SIGN_RSA_PSS_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA, + }, + {.name = "tls1.2 rsa-pss cert, rsa-sign key", /* we expect the server to refuse negotiating */ + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_rsa_pss_cert, + .key = &server_ca3_rsa_pss_key, + .exp_kx = GNUTLS_KX_ECDHE_RSA, + .exp_serv_err = GNUTLS_E_NO_CIPHER_SUITES + }, + {.name = "tls1.2 ed25519 cert, ed25519 key", + .pk = GNUTLS_PK_EDDSA_ED25519, + .prio = "NORMAL:+ECDHE-RSA:+ECDHE-ECDSA:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_eddsa_cert, + .key = &server_ca3_eddsa_key, + .sig = GNUTLS_SIGN_EDDSA_ED25519, + .exp_kx = GNUTLS_KX_ECDHE_ECDSA, + }, + {.name = "tls1.2 rsa-decrypt key", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:-KX-ALL:+RSA:-VERS-ALL:+VERS-TLS1.2", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .exp_kx = GNUTLS_KX_RSA + }, + {.name = "tls1.3 ecc key", + .pk = GNUTLS_PK_ECDSA, + .prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3", + .cert = &server_ca3_localhost_ecc_cert, + .key = &server_ca3_ecc_key, + .sig = GNUTLS_SIGN_ECDSA_SECP256R1_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA + }, + {.name = "tls1.3 rsa-sign key", + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3", + .cert = &server_ca3_localhost_cert, + .key = &server_ca3_key, + .sig = GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA + }, + {.name = "tls1.3 rsa-pss-sign key", + .pk = GNUTLS_PK_RSA_PSS, + .prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3", + .cert = &server_ca3_rsa_pss2_cert, + .key = &server_ca3_rsa_pss2_key, + .sig = GNUTLS_SIGN_RSA_PSS_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA, + }, + {.name = "tls1.3 rsa-pss cert, rsa-sign key", /* we expect the server to attempt to downgrade to TLS 1.2, but it is not possible because it is not enabled */ + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3", + .cert = &server_ca3_rsa_pss_cert, + .key = &server_ca3_rsa_pss_key, + .sig = GNUTLS_SIGN_RSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA, + .exp_serv_err = GNUTLS_E_NO_CIPHER_SUITES + }, + {.name = "tls1.3 rsa-pss cert, rsa-sign key, downgrade to tls1.2", /* we expect the server to downgrade to TLS 1.2 and refuse negotiating */ + .pk = GNUTLS_PK_RSA, + .prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3:+VERS-TLS1.2", + .cert = &server_ca3_rsa_pss_cert, + .key = &server_ca3_rsa_pss_key, + .sig = GNUTLS_SIGN_RSA_SHA256, + .exp_kx = GNUTLS_KX_ECDHE_RSA, + .exp_serv_err = GNUTLS_E_NO_CIPHER_SUITES + }, + {.name = "tls1.3 ed25519 cert, ed25519 key", + .pk = GNUTLS_PK_EDDSA_ED25519, + .prio = "NORMAL:-VERS-ALL:+VERS-TLS1.3", + .cert = &server_ca3_eddsa_cert, + .key = &server_ca3_eddsa_key, + .sig = GNUTLS_SIGN_EDDSA_ED25519, + .exp_kx = GNUTLS_KX_ECDHE_RSA, + } +}; + +void doit(void) +{ + gnutls_privkey_t privkey; + unsigned int i; + + global_init(); + + gnutls_global_set_log_function(tls_log_func); + if (debug) + gnutls_global_set_log_level(6); + + for (i=0;i<sizeof(tests)/sizeof(tests[0]);i++) { + success("checking: %s\n", tests[i].name); + + privkey = load_virt_privkey(tests[i].name, tests[i].key, tests[i].pk, + tests[i].sig, + tests[i].exp_key_err); + if (privkey == NULL && tests[i].exp_key_err < 0) + continue; + assert(privkey != 0); + + try_with_key(tests[i].name, tests[i].prio, + tests[i].exp_kx, 0, 0, + tests[i].cert, privkey, + tests[i].exp_serv_err); + } + + gnutls_global_deinit(); +} |