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/*
* Copyright (C) 2022 Red Hat, Inc.
*
* Author: Alexander Sosedkin
*
* 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 General Public License
* along with GnuTLS; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include <stdio.h>
#include <utils.h>
#include <gnutls/gnutls.h>
#include <gnutls/abstract.h>
#include <gnutls/x509.h>
#define FIPS_PUSH_CONTEXT() do { \
ret = gnutls_fips140_push_context(fips_context); \
if (ret < 0) { \
fail("gnutls_fips140_push_context failed\n"); \
} \
} while (0)
#define FIPS_POP_CONTEXT(state) do { \
ret = gnutls_fips140_pop_context(); \
if (ret < 0) { \
fail("gnutls_fips140_context_pop failed\n"); \
} \
fips_state = gnutls_fips140_get_operation_state(fips_context); \
if (fips_state != GNUTLS_FIPS140_OP_ ## state) { \
fail("operation state is not " # state " (%d)\n", \
fips_state); \
} \
} while (0)
void generate_successfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey,
unsigned int size);
void generate_unsuccessfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey,
unsigned int size);
void sign_verify_successfully(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey);
void sign_verify_unsuccessfully(gnutls_privkey_t privkey,
gnutls_pubkey_t pubkey);
void nosign_verify(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey);
void generate_successfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey,
unsigned int size)
{
int ret;
gnutls_x509_privkey_t xprivkey;
gnutls_fips140_context_t fips_context;
gnutls_fips140_operation_state_t fips_state;
assert(gnutls_fips140_context_init(&fips_context) == 0);
fprintf(stderr, "%d-bit\n", size);
/* x509 generation as well just because why not */
FIPS_PUSH_CONTEXT();
assert(gnutls_x509_privkey_init(&xprivkey) == 0);
ret = gnutls_x509_privkey_generate(xprivkey, GNUTLS_PK_RSA, size, 0);
if (ret != GNUTLS_E_SUCCESS)
fail("%d-bit x509_privkey_init (%d)\n", size, ret);
FIPS_POP_CONTEXT(APPROVED);
gnutls_x509_privkey_deinit(xprivkey);
FIPS_PUSH_CONTEXT();
assert(gnutls_privkey_init(privkey) == 0);
ret = gnutls_privkey_generate(*privkey, GNUTLS_PK_RSA, size, 0);
if (ret != GNUTLS_E_SUCCESS)
fail("%d-bit privkey_init (%d)\n", size, ret);
FIPS_POP_CONTEXT(APPROVED);
assert(gnutls_pubkey_init(pubkey) == 0);
FIPS_PUSH_CONTEXT();
ret = gnutls_pubkey_import_privkey(*pubkey, *privkey,
GNUTLS_KEY_DIGITAL_SIGNATURE, 0);
if (ret != GNUTLS_E_SUCCESS)
fail("%d-bit pubkey_import_privkey (%d)\n", size, ret);
FIPS_POP_CONTEXT(INITIAL);
gnutls_fips140_context_deinit(fips_context);
}
void generate_unsuccessfully(gnutls_privkey_t* privkey, gnutls_pubkey_t* pubkey,
unsigned int size)
{
int ret;
gnutls_x509_privkey_t xprivkey;
gnutls_fips140_context_t fips_context;
gnutls_fips140_operation_state_t fips_state;
assert(gnutls_fips140_context_init(&fips_context) == 0);
fprintf(stderr, "%d-bit\n", size);
/* short x509 generation: ERROR, blocked */
FIPS_PUSH_CONTEXT();
assert(gnutls_x509_privkey_init(&xprivkey) == 0);
ret = gnutls_x509_privkey_generate(xprivkey, GNUTLS_PK_RSA, size, 0);
if (ret != GNUTLS_E_PK_GENERATION_ERROR)
fail("%d-bit x509_privkey_init (%d)\n", size, ret);
FIPS_POP_CONTEXT(ERROR);
gnutls_x509_privkey_deinit(xprivkey);
/* short key generation: ERROR, blocked */
FIPS_PUSH_CONTEXT();
assert(gnutls_privkey_init(privkey) == 0);
ret = gnutls_privkey_generate(*privkey, GNUTLS_PK_RSA, size, 0);
if (ret != GNUTLS_E_PK_GENERATION_ERROR)
fail("%d-bit privkey_init (%d)\n", size, ret);
FIPS_POP_CONTEXT(ERROR);
gnutls_privkey_deinit(*privkey);
/* Disable FIPS to generate them anyway */
gnutls_fips140_set_mode(GNUTLS_FIPS140_LAX, 0);
assert(gnutls_fips140_mode_enabled() == GNUTLS_FIPS140_LAX);
assert(gnutls_x509_privkey_init(&xprivkey) == 0);
ret = gnutls_x509_privkey_generate(xprivkey, GNUTLS_PK_RSA, size, 0);
if (ret != GNUTLS_E_SUCCESS)
fail("%d-bit x509_privkey_init (%d)\n", size, ret);
gnutls_x509_privkey_deinit(xprivkey);
assert(gnutls_privkey_init(privkey) == 0);
ret = gnutls_privkey_generate(*privkey, GNUTLS_PK_RSA, size, 0);
if (ret != GNUTLS_E_SUCCESS)
fail("%d-bit privkey_init (%d)\n", size, ret);
assert(gnutls_pubkey_init(pubkey) == 0);
ret = gnutls_pubkey_import_privkey(*pubkey, *privkey,
GNUTLS_KEY_DIGITAL_SIGNATURE, 0);
if (ret != GNUTLS_E_SUCCESS)
fail("%d-bit pubkey_import_privkey (%d)\n", size, ret);
gnutls_fips140_set_mode(GNUTLS_FIPS140_STRICT, 0);
assert(gnutls_fips140_mode_enabled());
gnutls_fips140_context_deinit(fips_context);
}
void sign_verify_successfully(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey) {
int ret;
gnutls_fips140_context_t fips_context;
gnutls_fips140_operation_state_t fips_state;
gnutls_datum_t signature;
gnutls_datum_t plaintext = {
.data = (unsigned char* const) "Hello world!",
.size = 12
};
assert(gnutls_fips140_context_init(&fips_context) == 0);
/* RSA sign: approved */
FIPS_PUSH_CONTEXT();
ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_privkey_sign_data failed\n");
FIPS_POP_CONTEXT(APPROVED);
/* RSA verify: approved */
FIPS_PUSH_CONTEXT();
ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_RSA_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_pubkey_verify_data2 failed\n");
FIPS_POP_CONTEXT(APPROVED);
gnutls_free(signature.data);
gnutls_fips140_context_deinit(fips_context);
}
void sign_verify_unsuccessfully(gnutls_privkey_t privkey,
gnutls_pubkey_t pubkey) {
int ret;
gnutls_fips140_context_t fips_context;
gnutls_fips140_operation_state_t fips_state;
gnutls_datum_t signature;
gnutls_datum_t plaintext = {
.data = (unsigned char* const) "Hello world!",
.size = 12
};
assert(gnutls_fips140_context_init(&fips_context) == 0);
/* small key RSA sign: not approved */
FIPS_PUSH_CONTEXT();
ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_privkey_sign_data failed\n");
FIPS_POP_CONTEXT(NOT_APPROVED);
/* small key RSA verify: not approved */
FIPS_PUSH_CONTEXT();
ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_RSA_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_pubkey_verify_data2 failed\n");
FIPS_POP_CONTEXT(NOT_APPROVED);
gnutls_free(signature.data);
gnutls_pubkey_deinit(pubkey);
gnutls_privkey_deinit(privkey);
gnutls_fips140_context_deinit(fips_context);
}
void nosign_verify(gnutls_privkey_t privkey, gnutls_pubkey_t pubkey) {
int ret;
gnutls_fips140_context_t fips_context;
gnutls_fips140_operation_state_t fips_state;
gnutls_datum_t signature;
gnutls_datum_t plaintext = {
.data = (unsigned char* const) "Hello world!",
.size = 12
};
assert(gnutls_fips140_context_init(&fips_context) == 0);
/* 1024, 1280, 1536, 1792 key RSA sign: not approved */
FIPS_PUSH_CONTEXT();
ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_privkey_sign_data failed\n");
FIPS_POP_CONTEXT(NOT_APPROVED);
/* Disable FIPS to sign them anyway */
gnutls_fips140_set_mode(GNUTLS_FIPS140_LAX, 0);
assert(gnutls_fips140_mode_enabled() == GNUTLS_FIPS140_LAX);
ret = gnutls_privkey_sign_data(privkey, GNUTLS_DIG_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_privkey_sign_data failed\n");
gnutls_fips140_set_mode(GNUTLS_FIPS140_STRICT, 0);
assert(gnutls_fips140_mode_enabled());
/* 1024, 1280, 1536, 1792 key RSA verify: approved (exception) */
FIPS_PUSH_CONTEXT();
ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_RSA_SHA256, 0,
&plaintext, &signature);
if (ret < 0)
fail("gnutls_pubkey_verify_data2 failed\n");
FIPS_POP_CONTEXT(APPROVED);
gnutls_free(signature.data);
gnutls_pubkey_deinit(pubkey);
gnutls_privkey_deinit(privkey);
gnutls_fips140_context_deinit(fips_context);
}
void doit(void)
{
gnutls_fips140_context_t fips_context;
gnutls_privkey_t privkey;
gnutls_pubkey_t pubkey;
if (gnutls_fips140_mode_enabled() == 0) {
success("We are not in FIPS140 mode\n");
exit(77); /* SKIP */
}
assert(gnutls_fips140_context_init(&fips_context) == 0);
/* 512-bit RSA: no generate, no sign, no verify */
generate_unsuccessfully(&privkey, &pubkey, 512);
sign_verify_unsuccessfully(privkey, pubkey);
/* 512-bit RSA again (to be safer about going in and out of FIPS) */
generate_unsuccessfully(&privkey, &pubkey, 512);
sign_verify_unsuccessfully(privkey, pubkey);
/* 600-bit RSA: no generate, no sign, no verify */
generate_unsuccessfully(&privkey, &pubkey, 600);
sign_verify_unsuccessfully(privkey, pubkey);
/* 768-bit RSA not-an-exception: nogenerate, nosign, verify */
generate_unsuccessfully(&privkey, &pubkey, 768);
sign_verify_unsuccessfully(privkey, pubkey);
/* 1024-bit RSA exception: nogenerate, nosign, verify */
generate_unsuccessfully(&privkey, &pubkey, 1024);
nosign_verify(privkey, pubkey);
/* 1280-bit RSA exception: nogenerate, nosign, verify */
generate_unsuccessfully(&privkey, &pubkey, 1280);
nosign_verify(privkey, pubkey);
/* 1500-bit RSA not-an-exception: nogenerate, nosign, noverify */
generate_unsuccessfully(&privkey, &pubkey, 1500);
sign_verify_unsuccessfully(privkey, pubkey);
/* 1536-bit RSA exception: nogenerate, nosign, verify */
generate_unsuccessfully(&privkey, &pubkey, 1536);
nosign_verify(privkey, pubkey);
/* 1792-bit RSA exception: nogenerate, nosign, verify */
generate_unsuccessfully(&privkey, &pubkey, 1792);
nosign_verify(privkey, pubkey);
/* 2000-bit RSA not-an-exception: nogenerate, nosign, noverify */
generate_unsuccessfully(&privkey, &pubkey, 2000);
sign_verify_unsuccessfully(privkey, pubkey);
/* 2048-bit RSA: generate, sign, verify */
generate_successfully(&privkey, &pubkey, 2048);
sign_verify_successfully(privkey, pubkey);
/* 2432-bit RSA: nogenerate, sign, verify */
generate_unsuccessfully(&privkey, &pubkey, 2432);
sign_verify_successfully(privkey, pubkey);
/* 3072-bit RSA: generate, sign, verify */
generate_successfully(&privkey, &pubkey, 3072);
sign_verify_successfully(privkey, pubkey);
gnutls_fips140_context_deinit(fips_context);
}
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