399aa6b5ff
* fips/cmac/*: Implement the basis for FIPS CMAC, using FIPS HMAC as an example. * crypto/cmac/cmac.c: Enable the FIPS API. Change to use M_EVP macros where possible. * crypto/evp/evp.h: (some of the macros get added with this change) * fips/fips.h, fips/utl/fips_enc.c: Add a few needed functions and use macros to have cmac.c use these functions. * Makefile.org, fips/Makefile, fips/fips.c: Hook it in.
581 lines
14 KiB
C
581 lines
14 KiB
C
/* ====================================================================
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* Copyright (c) 2003 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#define OPENSSL_FIPSAPI
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#include <openssl/crypto.h>
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#include <openssl/rand.h>
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#include <openssl/fips_rand.h>
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#include <openssl/err.h>
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#include <openssl/bio.h>
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#include <openssl/hmac.h>
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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#include <openssl/ecdsa.h>
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#include <string.h>
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#include <limits.h>
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#include "fips_locl.h"
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#ifdef OPENSSL_FIPS
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#include <openssl/fips.h>
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#ifndef PATH_MAX
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#define PATH_MAX 1024
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#endif
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static int fips_selftest_fail;
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static int fips_mode;
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static int fips_started = 0;
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static const void *fips_rand_check;
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static int fips_is_owning_thread(void);
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static int fips_set_owning_thread(void);
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static int fips_clear_owning_thread(void);
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static unsigned char *fips_signature_witness(void);
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static void fips_w_lock(void) { CRYPTO_w_lock(CRYPTO_LOCK_FIPS); }
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static void fips_w_unlock(void) { CRYPTO_w_unlock(CRYPTO_LOCK_FIPS); }
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static void fips_r_lock(void) { CRYPTO_r_lock(CRYPTO_LOCK_FIPS); }
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static void fips_r_unlock(void) { CRYPTO_r_unlock(CRYPTO_LOCK_FIPS); }
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static void fips_set_mode(int onoff)
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{
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int owning_thread = fips_is_owning_thread();
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if (fips_started)
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{
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if (!owning_thread) fips_w_lock();
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fips_mode = onoff;
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if (!owning_thread) fips_w_unlock();
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}
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}
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static void fips_set_rand_check(const void *rand_check)
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{
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int owning_thread = fips_is_owning_thread();
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if (fips_started)
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{
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if (!owning_thread) fips_w_lock();
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fips_rand_check = rand_check;
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if (!owning_thread) fips_w_unlock();
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}
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}
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int FIPS_mode(void)
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{
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int ret = 0;
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int owning_thread = fips_is_owning_thread();
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if (fips_started)
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{
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if (!owning_thread) fips_r_lock();
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ret = fips_mode;
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if (!owning_thread) fips_r_unlock();
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}
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return ret;
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}
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const void *FIPS_rand_check(void)
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{
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const void *ret = 0;
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int owning_thread = fips_is_owning_thread();
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if (fips_started)
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{
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if (!owning_thread) fips_r_lock();
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ret = fips_rand_check;
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if (!owning_thread) fips_r_unlock();
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}
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return ret;
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}
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int FIPS_selftest_failed(void)
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{
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int ret = 0;
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if (fips_started)
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{
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int owning_thread = fips_is_owning_thread();
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if (!owning_thread) fips_r_lock();
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ret = fips_selftest_fail;
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if (!owning_thread) fips_r_unlock();
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}
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return ret;
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}
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/* Selftest failure fatal exit routine. This will be called
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* during *any* cryptographic operation. It has the minimum
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* overhead possible to avoid too big a performance hit.
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*/
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void FIPS_selftest_check(void)
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{
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if (fips_selftest_fail)
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{
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OpenSSLDie(__FILE__,__LINE__, "FATAL FIPS SELFTEST FAILURE");
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}
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}
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void fips_set_selftest_fail(void)
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{
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fips_selftest_fail = 1;
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}
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int FIPS_selftest(void)
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{
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return FIPS_selftest_sha1()
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&& FIPS_selftest_hmac()
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&& FIPS_selftest_cmac()
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&& FIPS_selftest_aes()
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&& FIPS_selftest_aes_gcm()
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&& FIPS_selftest_des()
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&& FIPS_selftest_rsa()
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&& FIPS_selftest_ecdsa()
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&& FIPS_selftest_dsa();
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}
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extern const void *FIPS_text_start(), *FIPS_text_end();
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extern const unsigned char FIPS_rodata_start[], FIPS_rodata_end[];
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unsigned char FIPS_signature [20] = { 0 };
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static const char FIPS_hmac_key[]="etaonrishdlcupfm";
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unsigned int FIPS_incore_fingerprint(unsigned char *sig,unsigned int len)
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{
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const unsigned char *p1 = FIPS_text_start();
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const unsigned char *p2 = FIPS_text_end();
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const unsigned char *p3 = FIPS_rodata_start;
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const unsigned char *p4 = FIPS_rodata_end;
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HMAC_CTX c;
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HMAC_CTX_init(&c);
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HMAC_Init(&c,FIPS_hmac_key,strlen(FIPS_hmac_key),EVP_sha1());
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/* detect overlapping regions */
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if (p1<=p3 && p2>=p3)
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p3=p1, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;
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else if (p3<=p1 && p4>=p1)
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p3=p3, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;
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if (p1)
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HMAC_Update(&c,p1,(size_t)p2-(size_t)p1);
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if (FIPS_signature>=p3 && FIPS_signature<p4)
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{
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/* "punch" hole */
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HMAC_Update(&c,p3,(size_t)FIPS_signature-(size_t)p3);
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p3 = FIPS_signature+sizeof(FIPS_signature);
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if (p3<p4)
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HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);
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}
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else
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HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);
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HMAC_Final(&c,sig,&len);
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HMAC_CTX_cleanup(&c);
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return len;
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}
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int FIPS_check_incore_fingerprint(void)
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{
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unsigned char sig[EVP_MAX_MD_SIZE];
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unsigned int len;
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#if defined(__sgi) && (defined(__mips) || defined(mips))
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extern int __dso_displacement[];
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#else
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extern int OPENSSL_NONPIC_relocated;
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#endif
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if (FIPS_text_start()==NULL)
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{
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FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_UNSUPPORTED_PLATFORM);
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return 0;
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}
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len=FIPS_incore_fingerprint (sig,sizeof(sig));
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if (len!=sizeof(FIPS_signature) ||
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memcmp(FIPS_signature,sig,sizeof(FIPS_signature)))
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{
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if (FIPS_signature>=FIPS_rodata_start && FIPS_signature<FIPS_rodata_end)
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FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_SEGMENT_ALIASING);
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#if defined(__sgi) && (defined(__mips) || defined(mips))
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else if (__dso_displacement!=NULL)
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#else
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else if (OPENSSL_NONPIC_relocated)
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#endif
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FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_NONPIC_RELOCATED);
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else
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FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH);
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#ifdef OPENSSL_FIPS_DEBUGGER
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return 1;
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#else
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return 0;
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#endif
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}
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return 1;
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}
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int FIPS_mode_set(int onoff)
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{
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int fips_set_owning_thread();
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int fips_clear_owning_thread();
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int ret = 0;
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fips_w_lock();
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fips_started = 1;
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fips_set_owning_thread();
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if(onoff)
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{
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unsigned char buf[48];
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fips_selftest_fail = 0;
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/* Don't go into FIPS mode twice, just so we can do automagic
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seeding */
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if(FIPS_mode())
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{
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FIPSerr(FIPS_F_FIPS_MODE_SET,FIPS_R_FIPS_MODE_ALREADY_SET);
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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#ifdef OPENSSL_IA32_SSE2
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if ((OPENSSL_ia32cap & (1<<25|1<<26)) != (1<<25|1<<26))
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{
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FIPSerr(FIPS_F_FIPS_MODE_SET,FIPS_R_UNSUPPORTED_PLATFORM);
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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#endif
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if(fips_signature_witness() != FIPS_signature)
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{
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FIPSerr(FIPS_F_FIPS_MODE_SET,FIPS_R_CONTRADICTING_EVIDENCE);
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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if(!FIPS_check_incore_fingerprint())
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{
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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if (!FIPS_selftest_drbg())
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{
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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/* Perform RNG KAT before seeding */
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if (!FIPS_selftest_rng())
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{
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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/* automagically seed PRNG if not already seeded */
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if(!FIPS_rand_status())
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{
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if(RAND_bytes(buf,sizeof buf) <= 0)
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{
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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FIPS_rand_set_key(buf,32);
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FIPS_rand_seed(buf+32,16);
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}
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/* now switch into FIPS mode */
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fips_set_rand_check(FIPS_rand_method());
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RAND_set_rand_method(FIPS_rand_method());
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if(FIPS_selftest())
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fips_set_mode(1);
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else
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{
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fips_selftest_fail = 1;
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ret = 0;
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goto end;
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}
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ret = 1;
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goto end;
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}
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fips_set_mode(0);
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fips_selftest_fail = 0;
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ret = 1;
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end:
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fips_clear_owning_thread();
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fips_w_unlock();
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return ret;
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}
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static CRYPTO_THREADID fips_thread;
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static int fips_thread_set = 0;
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static int fips_is_owning_thread(void)
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{
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int ret = 0;
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if (fips_started)
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{
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CRYPTO_r_lock(CRYPTO_LOCK_FIPS2);
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if (fips_thread_set)
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{
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CRYPTO_THREADID cur;
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CRYPTO_THREADID_current(&cur);
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if (!CRYPTO_THREADID_cmp(&cur, &fips_thread))
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ret = 1;
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}
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CRYPTO_r_unlock(CRYPTO_LOCK_FIPS2);
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}
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return ret;
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}
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int fips_set_owning_thread(void)
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{
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int ret = 0;
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|
|
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if (fips_started)
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{
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CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
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if (!fips_thread_set)
|
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{
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CRYPTO_THREADID_current(&fips_thread);
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ret = 1;
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}
|
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CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
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}
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return ret;
|
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}
|
|
|
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int fips_clear_owning_thread(void)
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{
|
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int ret = 0;
|
|
|
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if (fips_started)
|
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{
|
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CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
|
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if (fips_thread_set)
|
|
{
|
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CRYPTO_THREADID cur;
|
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CRYPTO_THREADID_current(&cur);
|
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if (!CRYPTO_THREADID_cmp(&cur, &fips_thread))
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fips_thread_set = 0;
|
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}
|
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CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
unsigned char *fips_signature_witness(void)
|
|
{
|
|
extern unsigned char FIPS_signature[];
|
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return FIPS_signature;
|
|
}
|
|
|
|
/* Generalized public key test routine. Signs and verifies the data
|
|
* supplied in tbs using mesage digest md and setting RSA padding mode
|
|
* pad_mode. If the 'kat' parameter is not NULL it will
|
|
* additionally check the signature matches it: a known answer test
|
|
* The string "fail_str" is used for identification purposes in case
|
|
* of failure.
|
|
*/
|
|
|
|
int fips_pkey_signature_test(EVP_PKEY *pkey,
|
|
const unsigned char *tbs, int tbslen,
|
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const unsigned char *kat, unsigned int katlen,
|
|
const EVP_MD *digest, int pad_mode,
|
|
const char *fail_str)
|
|
{
|
|
int ret = 0;
|
|
unsigned char sigtmp[256], *sig = sigtmp;
|
|
unsigned int siglen;
|
|
DSA_SIG *dsig = NULL;
|
|
ECDSA_SIG *esig = NULL;
|
|
EVP_MD_CTX mctx;
|
|
FIPS_md_ctx_init(&mctx);
|
|
|
|
if ((pkey->type == EVP_PKEY_RSA)
|
|
&& ((size_t)RSA_size(pkey->pkey.rsa) > sizeof(sigtmp)))
|
|
{
|
|
sig = OPENSSL_malloc(RSA_size(pkey->pkey.rsa));
|
|
if (!sig)
|
|
{
|
|
FIPSerr(FIPS_F_FIPS_PKEY_SIGNATURE_TEST,ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (tbslen == -1)
|
|
tbslen = strlen((char *)tbs);
|
|
|
|
if (digest == NULL)
|
|
digest = EVP_sha256();
|
|
|
|
if (!FIPS_digestinit(&mctx, digest))
|
|
goto error;
|
|
if (!FIPS_digestupdate(&mctx, tbs, tbslen))
|
|
goto error;
|
|
if (pkey->type == EVP_PKEY_RSA)
|
|
{
|
|
if (!FIPS_rsa_sign_ctx(pkey->pkey.rsa, &mctx,
|
|
pad_mode, 0, NULL, sig, &siglen))
|
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goto error;
|
|
}
|
|
else if (pkey->type == EVP_PKEY_DSA)
|
|
{
|
|
dsig = FIPS_dsa_sign_ctx(pkey->pkey.dsa, &mctx);
|
|
if (!dsig)
|
|
goto error;
|
|
}
|
|
else if (pkey->type == EVP_PKEY_EC)
|
|
{
|
|
esig = FIPS_ecdsa_sign_ctx(pkey->pkey.ec, &mctx);
|
|
if (!esig)
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|
goto error;
|
|
}
|
|
#if 0
|
|
else if (!EVP_SignFinal(&mctx, sig, &siglen, pkey))
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|
goto error;
|
|
#endif
|
|
|
|
if (kat && ((siglen != katlen) || memcmp(kat, sig, katlen)))
|
|
goto error;
|
|
|
|
if (!FIPS_digestinit(&mctx, digest))
|
|
goto error;
|
|
if (!FIPS_digestupdate(&mctx, tbs, tbslen))
|
|
goto error;
|
|
if (pkey->type == EVP_PKEY_RSA)
|
|
{
|
|
ret = FIPS_rsa_verify_ctx(pkey->pkey.rsa, &mctx,
|
|
pad_mode, 0, NULL, sig, siglen);
|
|
}
|
|
else if (pkey->type == EVP_PKEY_DSA)
|
|
{
|
|
ret = FIPS_dsa_verify_ctx(pkey->pkey.dsa, &mctx, dsig);
|
|
}
|
|
else if (pkey->type == EVP_PKEY_EC)
|
|
{
|
|
ret = FIPS_ecdsa_verify_ctx(pkey->pkey.ec, &mctx, esig);
|
|
}
|
|
#if 0
|
|
else
|
|
ret = EVP_VerifyFinal(&mctx, sig, siglen, pkey);
|
|
#endif
|
|
|
|
error:
|
|
if (dsig != NULL)
|
|
FIPS_dsa_sig_free(dsig);
|
|
if (esig != NULL)
|
|
FIPS_ecdsa_sig_free(esig);
|
|
if (sig != sigtmp)
|
|
OPENSSL_free(sig);
|
|
FIPS_md_ctx_cleanup(&mctx);
|
|
if (ret != 1)
|
|
{
|
|
FIPSerr(FIPS_F_FIPS_PKEY_SIGNATURE_TEST,FIPS_R_TEST_FAILURE);
|
|
if (fail_str)
|
|
FIPS_add_error_data(2, "Type=", fail_str);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Generalized symmetric cipher test routine. Encrypt data, verify result
|
|
* against known answer, decrypt and compare with original plaintext.
|
|
*/
|
|
|
|
int fips_cipher_test(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
|
|
const unsigned char *key,
|
|
const unsigned char *iv,
|
|
const unsigned char *plaintext,
|
|
const unsigned char *ciphertext,
|
|
int len)
|
|
{
|
|
unsigned char pltmp[FIPS_MAX_CIPHER_TEST_SIZE];
|
|
unsigned char citmp[FIPS_MAX_CIPHER_TEST_SIZE];
|
|
OPENSSL_assert(len <= FIPS_MAX_CIPHER_TEST_SIZE);
|
|
if (FIPS_cipherinit(ctx, cipher, key, iv, 1) <= 0)
|
|
return 0;
|
|
FIPS_cipher(ctx, citmp, plaintext, len);
|
|
if (memcmp(citmp, ciphertext, len))
|
|
return 0;
|
|
if (FIPS_cipherinit(ctx, cipher, key, iv, 0) <= 0)
|
|
return 0;
|
|
FIPS_cipher(ctx, pltmp, citmp, len);
|
|
if (memcmp(pltmp, plaintext, len))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
#if 0
|
|
/* The purpose of this is to ensure the error code exists and the function
|
|
* name is to keep the error checking script quiet
|
|
*/
|
|
void hash_final(void)
|
|
{
|
|
FIPSerr(FIPS_F_HASH_FINAL,FIPS_R_NON_FIPS_METHOD);
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif
|