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-rw-r--r--fips/rand/fips_drbg_lib.c579
1 files changed, 0 insertions, 579 deletions
diff --git a/fips/rand/fips_drbg_lib.c b/fips/rand/fips_drbg_lib.c
deleted file mode 100644
index ee162d05eb..0000000000
--- a/fips/rand/fips_drbg_lib.c
+++ /dev/null
@@ -1,579 +0,0 @@
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * Copyright (c) 2011 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- */
-
-#define OPENSSL_FIPSAPI
-
-#include <string.h>
-#include <openssl/crypto.h>
-#include <openssl/err.h>
-#include <openssl/fips_rand.h>
-#include "fips_rand_lcl.h"
-
-/* Support framework for SP800-90 DRBGs */
-
-int FIPS_drbg_init(DRBG_CTX *dctx, int type, unsigned int flags)
- {
- int rv;
- memset(dctx, 0, sizeof(DRBG_CTX));
- dctx->status = DRBG_STATUS_UNINITIALISED;
- dctx->xflags = flags;
- dctx->type = type;
-
- dctx->iflags = 0;
- dctx->entropy_blocklen = 0;
- dctx->health_check_cnt = 0;
- dctx->health_check_interval = DRBG_HEALTH_INTERVAL;
-
- rv = fips_drbg_hash_init(dctx);
-
- if (rv == -2)
- rv = fips_drbg_ctr_init(dctx);
- if (rv == -2)
- rv = fips_drbg_hmac_init(dctx);
- if (rv == -2)
- rv = fips_drbg_ec_init(dctx);
-
- if (rv <= 0)
- {
- if (rv == -2)
- FIPSerr(FIPS_F_FIPS_DRBG_INIT, FIPS_R_UNSUPPORTED_DRBG_TYPE);
- else
- FIPSerr(FIPS_F_FIPS_DRBG_INIT, FIPS_R_ERROR_INITIALISING_DRBG);
- }
-
- /* If not in test mode run selftests on DRBG of the same type */
-
- if (!(dctx->xflags & DRBG_FLAG_TEST))
- {
- if (!FIPS_drbg_health_check(dctx))
- {
- FIPSerr(FIPS_F_FIPS_DRBG_INIT, FIPS_R_SELFTEST_FAILURE);
- return 0;
- }
- }
-
- return rv;
- }
-
-DRBG_CTX *FIPS_drbg_new(int type, unsigned int flags)
- {
- DRBG_CTX *dctx;
- dctx = OPENSSL_malloc(sizeof(DRBG_CTX));
- if (!dctx)
- {
- FIPSerr(FIPS_F_FIPS_DRBG_NEW, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- if (type == 0)
- {
- memset(dctx, 0, sizeof(DRBG_CTX));
- dctx->type = 0;
- dctx->status = DRBG_STATUS_UNINITIALISED;
- return dctx;
- }
-
- if (FIPS_drbg_init(dctx, type, flags) <= 0)
- {
- OPENSSL_free(dctx);
- return NULL;
- }
-
- return dctx;
- }
-
-void FIPS_drbg_free(DRBG_CTX *dctx)
- {
- if (dctx->uninstantiate)
- dctx->uninstantiate(dctx);
- /* Don't free up default DRBG */
- if (dctx == FIPS_get_default_drbg())
- {
- memset(dctx, 0, sizeof(DRBG_CTX));
- dctx->type = 0;
- dctx->status = DRBG_STATUS_UNINITIALISED;
- }
- else
- {
- OPENSSL_cleanse(&dctx->d, sizeof(dctx->d));
- OPENSSL_free(dctx);
- }
- }
-
-static size_t fips_get_entropy(DRBG_CTX *dctx, unsigned char **pout,
- int entropy, size_t min_len, size_t max_len)
- {
- unsigned char *tout, *p;
- size_t bl = dctx->entropy_blocklen, rv;
- if (!dctx->get_entropy)
- return 0;
- if (dctx->xflags & DRBG_FLAG_TEST || !bl)
- return dctx->get_entropy(dctx, pout, entropy, min_len, max_len);
- rv = dctx->get_entropy(dctx, &tout, entropy + bl,
- min_len + bl, max_len + bl);
- *pout = tout + bl;
- if (rv < (min_len + bl) || (rv % bl))
- return 0;
- /* Compare consecutive blocks for continuous PRNG test */
- for (p = tout; p < tout + rv - bl; p += bl)
- {
- if (!memcmp(p, p + bl, bl))
- {
- FIPSerr(FIPS_F_FIPS_GET_ENTROPY, FIPS_R_ENTROPY_SOURCE_STUCK);
- return 0;
- }
- }
- rv -= bl;
- if (rv > max_len)
- return max_len;
- return rv;
- }
-
-static void fips_cleanup_entropy(DRBG_CTX *dctx,
- unsigned char *out, size_t olen)
- {
- size_t bl;
- if (dctx->xflags & DRBG_FLAG_TEST)
- bl = 0;
- else
- bl = dctx->entropy_blocklen;
- /* Call cleanup with original arguments */
- dctx->cleanup_entropy(dctx, out - bl, olen + bl);
- }
-
-
-int FIPS_drbg_instantiate(DRBG_CTX *dctx,
- const unsigned char *pers, size_t perslen)
- {
- size_t entlen = 0, noncelen = 0;
- unsigned char *nonce = NULL, *entropy = NULL;
-
-#if 0
- /* Put here so error script picks them up */
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE,
- FIPS_R_PERSONALISATION_STRING_TOO_LONG);
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, FIPS_R_IN_ERROR_STATE);
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, FIPS_R_ALREADY_INSTANTIATED);
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, FIPS_R_ERROR_RETRIEVING_ENTROPY);
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, FIPS_R_ERROR_RETRIEVING_NONCE);
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, FIPS_R_INSTANTIATE_ERROR);
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, FIPS_R_DRBG_NOT_INITIALISED);
-#endif
-
- int r = 0;
-
- if (perslen > dctx->max_pers)
- {
- r = FIPS_R_PERSONALISATION_STRING_TOO_LONG;
- goto end;
- }
-
- if (!dctx->instantiate)
- {
- r = FIPS_R_DRBG_NOT_INITIALISED;
- goto end;
- }
-
- if (dctx->status != DRBG_STATUS_UNINITIALISED)
- {
- if (dctx->status == DRBG_STATUS_ERROR)
- r = FIPS_R_IN_ERROR_STATE;
- else
- r = FIPS_R_ALREADY_INSTANTIATED;
- goto end;
- }
-
- dctx->status = DRBG_STATUS_ERROR;
-
- entlen = fips_get_entropy(dctx, &entropy, dctx->strength,
- dctx->min_entropy, dctx->max_entropy);
-
- if (entlen < dctx->min_entropy || entlen > dctx->max_entropy)
- {
- r = FIPS_R_ERROR_RETRIEVING_ENTROPY;
- goto end;
- }
-
- if (dctx->max_nonce > 0 && dctx->get_nonce)
- {
- noncelen = dctx->get_nonce(dctx, &nonce,
- dctx->strength / 2,
- dctx->min_nonce, dctx->max_nonce);
-
- if (noncelen < dctx->min_nonce || noncelen > dctx->max_nonce)
- {
- r = FIPS_R_ERROR_RETRIEVING_NONCE;
- goto end;
- }
-
- }
-
- if (!dctx->instantiate(dctx,
- entropy, entlen,
- nonce, noncelen,
- pers, perslen))
- {
- r = FIPS_R_ERROR_INSTANTIATING_DRBG;
- goto end;
- }
-
-
- dctx->status = DRBG_STATUS_READY;
- if (!(dctx->iflags & DRBG_CUSTOM_RESEED))
- dctx->reseed_counter = 1;
-
- end:
-
- if (entropy && dctx->cleanup_entropy)
- fips_cleanup_entropy(dctx, entropy, entlen);
-
- if (nonce && dctx->cleanup_nonce)
- dctx->cleanup_nonce(dctx, nonce, noncelen);
-
- if (dctx->status == DRBG_STATUS_READY)
- return 1;
-
- if (r && !(dctx->iflags & DRBG_FLAG_NOERR))
- FIPSerr(FIPS_F_FIPS_DRBG_INSTANTIATE, r);
-
- return 0;
-
- }
-
-static int drbg_reseed(DRBG_CTX *dctx,
- const unsigned char *adin, size_t adinlen, int hcheck)
- {
- unsigned char *entropy = NULL;
- size_t entlen = 0;
- int r = 0;
-
-#if 0
- FIPSerr(FIPS_F_DRBG_RESEED, FIPS_R_NOT_INSTANTIATED);
- FIPSerr(FIPS_F_DRBG_RESEED, FIPS_R_ADDITIONAL_INPUT_TOO_LONG);
-#endif
- if (dctx->status != DRBG_STATUS_READY
- && dctx->status != DRBG_STATUS_RESEED)
- {
- if (dctx->status == DRBG_STATUS_ERROR)
- r = FIPS_R_IN_ERROR_STATE;
- else if(dctx->status == DRBG_STATUS_UNINITIALISED)
- r = FIPS_R_NOT_INSTANTIATED;
- goto end;
- }
-
- if (!adin)
- adinlen = 0;
- else if (adinlen > dctx->max_adin)
- {
- r = FIPS_R_ADDITIONAL_INPUT_TOO_LONG;
- goto end;
- }
-
- dctx->status = DRBG_STATUS_ERROR;
- /* Peform health check on all reseed operations if not a prediction
- * resistance request and not in test mode.
- */
- if (hcheck && !(dctx->xflags & DRBG_FLAG_TEST))
- {
- if (!FIPS_drbg_health_check(dctx))
- {
- r = FIPS_R_SELFTEST_FAILURE;
- goto end;
- }
- }
-
- entlen = fips_get_entropy(dctx, &entropy, dctx->strength,
- dctx->min_entropy, dctx->max_entropy);
-
- if (entlen < dctx->min_entropy || entlen > dctx->max_entropy)
- {
- r = FIPS_R_ERROR_RETRIEVING_ENTROPY;
- goto end;
- }
-
- if (!dctx->reseed(dctx, entropy, entlen, adin, adinlen))
- goto end;
-
- dctx->status = DRBG_STATUS_READY;
- if (!(dctx->iflags & DRBG_CUSTOM_RESEED))
- dctx->reseed_counter = 1;
- end:
-
- if (entropy && dctx->cleanup_entropy)
- fips_cleanup_entropy(dctx, entropy, entlen);
-
- if (dctx->status == DRBG_STATUS_READY)
- return 1;
-
- if (r && !(dctx->iflags & DRBG_FLAG_NOERR))
- FIPSerr(FIPS_F_DRBG_RESEED, r);
-
- return 0;
- }
-
-int FIPS_drbg_reseed(DRBG_CTX *dctx,
- const unsigned char *adin, size_t adinlen)
- {
- return drbg_reseed(dctx, adin, adinlen, 1);
- }
-
-static int fips_drbg_check(DRBG_CTX *dctx)
- {
- if (dctx->xflags & DRBG_FLAG_TEST)
- return 1;
- dctx->health_check_cnt++;
- if (dctx->health_check_cnt >= dctx->health_check_interval)
- {
- if (!FIPS_drbg_health_check(dctx))
- {
- FIPSerr(FIPS_F_FIPS_DRBG_CHECK, FIPS_R_SELFTEST_FAILURE);
- return 0;
- }
- }
- return 1;
- }
-
-int FIPS_drbg_generate(DRBG_CTX *dctx, unsigned char *out, size_t outlen,
- int prediction_resistance,
- const unsigned char *adin, size_t adinlen)
- {
- int r = 0;
-
- if (FIPS_selftest_failed())
- {
- FIPSerr(FIPS_F_FIPS_DRBG_GENERATE, FIPS_R_SELFTEST_FAILED);
- return 0;
- }
-
- if (!fips_drbg_check(dctx))
- return 0;
-
- if (dctx->status != DRBG_STATUS_READY
- && dctx->status != DRBG_STATUS_RESEED)
- {
- if (dctx->status == DRBG_STATUS_ERROR)
- r = FIPS_R_IN_ERROR_STATE;
- else if(dctx->status == DRBG_STATUS_UNINITIALISED)
- r = FIPS_R_NOT_INSTANTIATED;
- goto end;
- }
-
- if (outlen > dctx->max_request)
- {
- r = FIPS_R_REQUEST_TOO_LARGE_FOR_DRBG;
- return 0;
- }
-
- if (adinlen > dctx->max_adin)
- {
- r = FIPS_R_ADDITIONAL_INPUT_TOO_LONG;
- goto end;
- }
-
- if (dctx->iflags & DRBG_CUSTOM_RESEED)
- dctx->generate(dctx, NULL, outlen, NULL, 0);
- else if (dctx->reseed_counter >= dctx->reseed_interval)
- dctx->status = DRBG_STATUS_RESEED;
-
- if (dctx->status == DRBG_STATUS_RESEED || prediction_resistance)
- {
- /* If prediction resistance request don't do health check */
- int hcheck = prediction_resistance ? 0 : 1;
-
- if (!drbg_reseed(dctx, adin, adinlen, hcheck))
- {
- r = FIPS_R_RESEED_ERROR;
- goto end;
- }
- adin = NULL;
- adinlen = 0;
- }
-
- if (!dctx->generate(dctx, out, outlen, adin, adinlen))
- {
- r = FIPS_R_GENERATE_ERROR;
- dctx->status = DRBG_STATUS_ERROR;
- goto end;
- }
- if (!(dctx->iflags & DRBG_CUSTOM_RESEED))
- {
- if (dctx->reseed_counter >= dctx->reseed_interval)
- dctx->status = DRBG_STATUS_RESEED;
- else
- dctx->reseed_counter++;
- }
-
- end:
- if (r)
- {
- if (!(dctx->iflags & DRBG_FLAG_NOERR))
- FIPSerr(FIPS_F_FIPS_DRBG_GENERATE, r);
- return 0;
- }
-
- return 1;
- }
-
-int FIPS_drbg_uninstantiate(DRBG_CTX *dctx)
- {
- int rv;
- if (!dctx->uninstantiate)
- rv = 1;
- else
- rv = dctx->uninstantiate(dctx);
- /* Although we'd like to cleanse here we can't because we have to
- * test the uninstantiate really zeroes the data.
- */
- memset(&dctx->d, 0, sizeof(dctx->d));
- dctx->status = DRBG_STATUS_UNINITIALISED;
- /* If method has problems uninstantiating, return error */
- return rv;
- }
-
-int FIPS_drbg_set_callbacks(DRBG_CTX *dctx,
- size_t (*get_entropy)(DRBG_CTX *ctx, unsigned char **pout,
- int entropy, size_t min_len, size_t max_len),
- void (*cleanup_entropy)(DRBG_CTX *ctx, unsigned char *out, size_t olen),
- size_t entropy_blocklen,
- size_t (*get_nonce)(DRBG_CTX *ctx, unsigned char **pout,
- int entropy, size_t min_len, size_t max_len),
- void (*cleanup_nonce)(DRBG_CTX *ctx, unsigned char *out, size_t olen))
- {
- if (dctx->status != DRBG_STATUS_UNINITIALISED)
- return 0;
- dctx->entropy_blocklen = entropy_blocklen;
- dctx->get_entropy = get_entropy;
- dctx->cleanup_entropy = cleanup_entropy;
- dctx->get_nonce = get_nonce;
- dctx->cleanup_nonce = cleanup_nonce;
- return 1;
- }
-
-int FIPS_drbg_set_rand_callbacks(DRBG_CTX *dctx,
- size_t (*get_adin)(DRBG_CTX *ctx, unsigned char **pout),
- void (*cleanup_adin)(DRBG_CTX *ctx, unsigned char *out, size_t olen),
- int (*rand_seed_cb)(DRBG_CTX *ctx, const void *buf, int num),
- int (*rand_add_cb)(DRBG_CTX *ctx,
- const void *buf, int num, double entropy))
- {
- if (dctx->status != DRBG_STATUS_UNINITIALISED)
- return 0;
- dctx->get_adin = get_adin;
- dctx->cleanup_adin = cleanup_adin;
- dctx->rand_seed_cb = rand_seed_cb;
- dctx->rand_add_cb = rand_add_cb;
- return 1;
- }
-
-void *FIPS_drbg_get_app_data(DRBG_CTX *dctx)
- {
- return dctx->app_data;
- }
-
-void FIPS_drbg_set_app_data(DRBG_CTX *dctx, void *app_data)
- {
- dctx->app_data = app_data;
- }
-
-size_t FIPS_drbg_get_blocklength(DRBG_CTX *dctx)
- {
- return dctx->blocklength;
- }
-
-int FIPS_drbg_get_strength(DRBG_CTX *dctx)
- {
- return dctx->strength;
- }
-
-void FIPS_drbg_set_check_interval(DRBG_CTX *dctx, int interval)
- {
- dctx->health_check_interval = interval;
- }
-
-void FIPS_drbg_set_reseed_interval(DRBG_CTX *dctx, int interval)
- {
- dctx->reseed_interval = interval;
- }
-
-static int drbg_stick = 0;
-
-void FIPS_drbg_stick(int onoff)
- {
- drbg_stick = onoff;
- }
-
-/* Continuous DRBG utility function */
-int fips_drbg_cprng_test(DRBG_CTX *dctx, const unsigned char *out)
- {
- /* No CPRNG in test mode */
- if (dctx->xflags & DRBG_FLAG_TEST)
- return 1;
- /* Check block is valid: should never happen */
- if (dctx->lb_valid == 0)
- {
- FIPSerr(FIPS_F_FIPS_DRBG_CPRNG_TEST, FIPS_R_INTERNAL_ERROR);
- fips_set_selftest_fail();
- return 0;
- }
- if (drbg_stick)
- memcpy(dctx->lb, out, dctx->blocklength);
- /* Check against last block: fail if match */
- if (!memcmp(dctx->lb, out, dctx->blocklength))
- {
- FIPSerr(FIPS_F_FIPS_DRBG_CPRNG_TEST, FIPS_R_DRBG_STUCK);
- fips_set_selftest_fail();
- return 0;
- }
- /* Save last block for next comparison */
- memcpy(dctx->lb, out, dctx->blocklength);
- return 1;
- }