From 36082a2fe36ecd800d784ae44c14f1f18c66a7e9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 09:33:12 +0200 Subject: Adding upstream version 3.7.9. Signed-off-by: Daniel Baumann --- tests/rsa-rsa-pss.c | 253 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 253 insertions(+) create mode 100644 tests/rsa-rsa-pss.c (limited to 'tests/rsa-rsa-pss.c') diff --git a/tests/rsa-rsa-pss.c b/tests/rsa-rsa-pss.c new file mode 100644 index 0000000..19a175b --- /dev/null +++ b/tests/rsa-rsa-pss.c @@ -0,0 +1,253 @@ +/* + * 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 + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include +#include +#include +#include +#include +#include +#include + +#include "utils.h" + +/* This tests the key conversion from basic RSA to RSA-PSS. + */ + +static void tls_log_func(int level, const char *str) +{ + fprintf(stderr, "<%d>| %s", level, str); +} + +const gnutls_datum_t raw_data = { + (void *) "hello there", + 11 +}; + +static void inv_sign_check(unsigned sigalgo, + gnutls_privkey_t privkey, int exp_error) +{ + int ret; + gnutls_datum_t signature; + + ret = gnutls_privkey_sign_data2(privkey, sigalgo, 0, + &raw_data, &signature); + if (ret != exp_error) + fail("gnutls_privkey_sign_data succeeded with %s and %s: %s\n", gnutls_pk_get_name(gnutls_privkey_get_pk_algorithm(privkey, NULL)), + gnutls_sign_get_name(sigalgo), gnutls_strerror(ret)); + + if (ret == 0) + gnutls_free(signature.data); +} + +static void inv_encryption_check(gnutls_pk_algorithm_t algorithm, + gnutls_privkey_t privkey, int exp_error) +{ + int ret; + gnutls_datum_t ct; + gnutls_pubkey_t pubkey; + + assert(gnutls_pubkey_init(&pubkey) >= 0); + + ret = gnutls_pubkey_import_privkey(pubkey, privkey, 0, 0); + if (ret < 0) + fail("gnutls_pubkey_import_privkey\n"); + + ret = gnutls_pubkey_encrypt_data(pubkey, 0, &raw_data, &ct); + if (ret != exp_error) + fail("gnutls_pubkey_encrypt_data succeeded with %s: %s\n", gnutls_pk_get_name(algorithm), + gnutls_strerror(ret)); + + gnutls_pubkey_deinit(pubkey); + +} + +static void sign_verify_data(unsigned sigalgo, gnutls_privkey_t privkey, + unsigned int sign_flags, unsigned int verify_flags, + int sign_exp_error, int verify_exp_error) +{ + int ret; + gnutls_datum_t signature = { NULL, 0 }; + + ret = gnutls_privkey_sign_data2(privkey, sigalgo, sign_flags, + &raw_data, &signature); + if (ret != sign_exp_error) + fail("gnutls_x509_privkey_sign_data returned unexpected error: %s\n", + gnutls_strerror(ret)); + + if (ret < 0) { + success("skipping verification as signing is expected to fail\n"); + } else { + gnutls_pubkey_t pubkey; + + /* verify data */ + assert(gnutls_pubkey_init(&pubkey) >= 0); + + ret = gnutls_pubkey_import_privkey(pubkey, privkey, 0, 0); + if (ret < 0) + fail("gnutls_pubkey_import_privkey\n"); + + ret = gnutls_pubkey_verify_data2(pubkey, sigalgo, + verify_flags, &raw_data, &signature); + if (ret != verify_exp_error) + fail("gnutls_pubkey_verify_data2 returned unexpected error: %s\n", + gnutls_strerror(ret)); + + gnutls_pubkey_deinit(pubkey); + } + + gnutls_free(signature.data); +} + +static void +prepare_keys(gnutls_privkey_t *pkey_rsa_pss, gnutls_privkey_t *pkey_rsa, + gnutls_digest_algorithm_t dig, size_t salt_size) +{ + gnutls_privkey_t pkey; + gnutls_x509_privkey_t tkey; + int ret; + gnutls_x509_spki_t spki; + gnutls_datum_t tmp; + + assert(gnutls_x509_spki_init(&spki)>=0); + + assert(gnutls_privkey_init(&pkey) >=0); + + gnutls_x509_spki_set_rsa_pss_params(spki, dig, salt_size); + + ret = + gnutls_privkey_generate(pkey, GNUTLS_PK_RSA, 2048, 0); + if (ret < 0) { + fail("gnutls_privkey_generate: %s\n", gnutls_strerror(ret)); + } + + assert(gnutls_privkey_set_spki(pkey, spki, 0)>=0); + assert(gnutls_privkey_export_x509(pkey, &tkey) >=0); + gnutls_x509_spki_deinit(spki); + + gnutls_x509_privkey_export2_pkcs8(tkey, GNUTLS_X509_FMT_PEM, NULL, 0, &tmp); + + /* import RSA-PSS version of key */ + assert(gnutls_privkey_init(pkey_rsa_pss) >=0); + assert(gnutls_privkey_import_x509_raw(*pkey_rsa_pss, &tmp, GNUTLS_X509_FMT_PEM, NULL, 0) >= 0); + + gnutls_free(tmp.data); + + /* import RSA version of key */ + gnutls_x509_privkey_export2(tkey, GNUTLS_X509_FMT_PEM, &tmp); + assert(gnutls_privkey_init(pkey_rsa) >=0); + assert(gnutls_privkey_import_x509_raw(*pkey_rsa, &tmp, GNUTLS_X509_FMT_PEM, NULL, 0) >= 0); + + gnutls_x509_privkey_deinit(tkey); + gnutls_free(tmp.data); + gnutls_privkey_deinit(pkey); +} + +void doit(void) +{ + gnutls_privkey_t pkey_rsa_pss; + gnutls_privkey_t pkey_rsa; + gnutls_x509_spki_t spki; + int ret; + + ret = global_init(); + if (ret < 0) + fail("global_init: %d\n", ret); + + gnutls_global_set_log_function(tls_log_func); + if (debug) + gnutls_global_set_log_level(4711); + + prepare_keys(&pkey_rsa_pss, &pkey_rsa, GNUTLS_DIG_SHA256, 32); + + sign_verify_data(GNUTLS_SIGN_RSA_PSS_SHA256, pkey_rsa_pss, 0, 0, 0, 0); + sign_verify_data(GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, pkey_rsa, 0, 0, 0, 0); + sign_verify_data(GNUTLS_SIGN_RSA_PSS_SHA256, pkey_rsa, 0, 0, 0, 0); + + if (debug) + success("success signing with RSA-PSS-SHA256\n"); + + /* check whether the RSA-PSS key restrictions are being followed */ + inv_encryption_check(GNUTLS_PK_RSA_PSS, pkey_rsa_pss, GNUTLS_E_INVALID_REQUEST); + inv_sign_check(GNUTLS_SIGN_RSA_SHA512, pkey_rsa_pss, GNUTLS_E_CONSTRAINT_ERROR); + inv_sign_check(GNUTLS_SIGN_RSA_SHA256, pkey_rsa_pss, GNUTLS_E_CONSTRAINT_ERROR); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_SHA384, pkey_rsa_pss, GNUTLS_E_CONSTRAINT_ERROR); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_SHA512, pkey_rsa_pss, GNUTLS_E_CONSTRAINT_ERROR); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_RSAE_SHA384, pkey_rsa_pss, GNUTLS_E_CONSTRAINT_ERROR); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_RSAE_SHA512, pkey_rsa_pss, GNUTLS_E_CONSTRAINT_ERROR); + + /* check whether the RSA key is not being restricted */ + inv_sign_check(GNUTLS_SIGN_RSA_SHA512, pkey_rsa, 0); + inv_sign_check(GNUTLS_SIGN_RSA_SHA256, pkey_rsa, 0); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_RSAE_SHA384, pkey_rsa, 0); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_RSAE_SHA512, pkey_rsa, 0); + /* an RSA key can also generate "pure" for TLS RSA-PSS signatures + * as they are essentially the same thing, and we cannot always + * know whether a key is RSA-PSS only, or not (e.g., in PKCS#11 + * keys). */ + inv_sign_check(GNUTLS_SIGN_RSA_PSS_SHA384, pkey_rsa, 0); + inv_sign_check(GNUTLS_SIGN_RSA_PSS_SHA512, pkey_rsa, 0); + + gnutls_privkey_deinit(pkey_rsa_pss); + gnutls_privkey_deinit(pkey_rsa); + + /* Use the mismatched salt length with the digest length */ + prepare_keys(&pkey_rsa_pss, &pkey_rsa, GNUTLS_DIG_SHA256, 48); + + sign_verify_data(GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, pkey_rsa_pss, + 0, 0, 0, 0); + sign_verify_data(GNUTLS_SIGN_RSA_PSS_SHA256, pkey_rsa_pss, + GNUTLS_PRIVKEY_FLAG_RSA_PSS_FIXED_SALT_LENGTH, + 0, + GNUTLS_E_CONSTRAINT_ERROR, + 0); + sign_verify_data(GNUTLS_SIGN_RSA_PSS_SHA256, pkey_rsa_pss, + 0, + GNUTLS_VERIFY_RSA_PSS_FIXED_SALT_LENGTH, + 0, + GNUTLS_E_PK_SIG_VERIFY_FAILED); + + assert(gnutls_x509_spki_init(&spki)>=0); + gnutls_x509_spki_set_rsa_pss_params(spki, GNUTLS_DIG_SHA256, 48); + assert(gnutls_privkey_set_spki(pkey_rsa, spki, 0)>=0); + + sign_verify_data(GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, pkey_rsa, 0, 0, 0, 0); + sign_verify_data(GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, pkey_rsa, + GNUTLS_PRIVKEY_FLAG_RSA_PSS_FIXED_SALT_LENGTH, + 0, + GNUTLS_E_CONSTRAINT_ERROR, + 0); + sign_verify_data(GNUTLS_SIGN_RSA_PSS_RSAE_SHA256, pkey_rsa, + 0, + GNUTLS_VERIFY_RSA_PSS_FIXED_SALT_LENGTH, + 0, + GNUTLS_E_PK_SIG_VERIFY_FAILED); + + gnutls_privkey_deinit(pkey_rsa_pss); + gnutls_privkey_deinit(pkey_rsa); + gnutls_x509_spki_deinit(spki); + + gnutls_global_deinit(); +} -- cgit v1.2.3