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xs/sc_ssl/openssl/source/fips/fips.c  view on Meta::CPAN

int FIPS_selftest()
    {

    return FIPS_selftest_sha1()
	&& FIPS_selftest_hmac()
	&& FIPS_selftest_aes()
	&& FIPS_selftest_des()
	&& FIPS_selftest_rsa()
	&& FIPS_selftest_dsa();
    }

extern const void         *FIPS_text_start(),  *FIPS_text_end();
extern const unsigned char FIPS_rodata_start[], FIPS_rodata_end[];
unsigned char              FIPS_signature [20] = { 0 };
static const char          FIPS_hmac_key[]="etaonrishdlcupfm";

unsigned int FIPS_incore_fingerprint(unsigned char *sig,unsigned int len)
    {
    const unsigned char *p1 = FIPS_text_start();
    const unsigned char *p2 = FIPS_text_end();
    const unsigned char *p3 = FIPS_rodata_start;
    const unsigned char *p4 = FIPS_rodata_end;
    HMAC_CTX c;

    HMAC_CTX_init(&c);
    HMAC_Init(&c,FIPS_hmac_key,strlen(FIPS_hmac_key),EVP_sha1());

    /* detect overlapping regions */
    if (p1<=p3 && p2>=p3)
	p3=p1, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;
    else if (p3<=p1 && p4>=p1)
	p3=p3, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;

    if (p1)
	HMAC_Update(&c,p1,(size_t)p2-(size_t)p1);

    if (FIPS_signature>=p3 && FIPS_signature<p4)
	{
	/* "punch" hole */
	HMAC_Update(&c,p3,(size_t)FIPS_signature-(size_t)p3);
	p3 = FIPS_signature+sizeof(FIPS_signature);
	if (p3<p4)
	    HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);
	}
    else
	HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);

    HMAC_Final(&c,sig,&len);
    HMAC_CTX_cleanup(&c);

    return len;
    }

int FIPS_check_incore_fingerprint(void)
    {
    unsigned char sig[EVP_MAX_MD_SIZE];
    unsigned int len;
#if defined(__sgi) && (defined(__mips) || defined(mips))
    extern int __dso_displacement[];
#else
    extern int OPENSSL_NONPIC_relocated;
#endif

    if (FIPS_text_start()==NULL)
	{
	FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_UNSUPPORTED_PLATFORM);
	return 0;
	}

    len=FIPS_incore_fingerprint (sig,sizeof(sig));

    if (len!=sizeof(FIPS_signature) ||
	memcmp(FIPS_signature,sig,sizeof(FIPS_signature)))
	{
	if (FIPS_signature>=FIPS_rodata_start && FIPS_signature<FIPS_rodata_end)
	    FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_SEGMENT_ALIASING);
#if defined(__sgi) && (defined(__mips) || defined(mips))
	else if (__dso_displacement!=NULL)
#else
	else if (OPENSSL_NONPIC_relocated)
#endif
	    FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_NONPIC_RELOCATED);
	else
	    FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH);
	return 0;
	}

    return 1;
    }

int FIPS_mode_set(int onoff)
    {
    int fips_set_owning_thread();
    int fips_clear_owning_thread();
    int ret = 0;

    fips_w_lock();
    fips_set_started();
    fips_set_owning_thread();

    if(onoff)
	{
	unsigned char buf[48];

	fips_selftest_fail = 0;

	/* Don't go into FIPS mode twice, just so we can do automagic
	   seeding */
	if(FIPS_mode())
	    {
	    FIPSerr(FIPS_F_FIPS_MODE_SET,FIPS_R_FIPS_MODE_ALREADY_SET);
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }

#ifdef OPENSSL_IA32_SSE2
	if ((OPENSSL_ia32cap & (1<<25|1<<26)) != (1<<25|1<<26))
	    {
	    FIPSerr(FIPS_F_FIPS_MODE_SET,FIPS_R_UNSUPPORTED_PLATFORM);
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }
#endif

	if(fips_signature_witness() != FIPS_signature)
	    {
	    FIPSerr(FIPS_F_FIPS_MODE_SET,FIPS_R_CONTRADICTING_EVIDENCE);
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }

	if(!FIPS_check_incore_fingerprint())
	    {
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }