Index: srtp/crypto/kernel/crypto_kernel.c |
diff --git a/srtp/crypto/kernel/crypto_kernel.c b/srtp/crypto/kernel/crypto_kernel.c |
deleted file mode 100644 |
index 518cd1e61512e18e2e3694df374620b3e99fe3cb..0000000000000000000000000000000000000000 |
--- a/srtp/crypto/kernel/crypto_kernel.c |
+++ /dev/null |
@@ -1,614 +0,0 @@ |
-/* |
- * crypto_kernel.c |
- * |
- * header for the cryptographic kernel |
- * |
- * David A. McGrew |
- * Cisco Systems, Inc. |
- */ |
-/* |
- * |
- * Copyright(c) 2001-2006,2013 Cisco Systems, Inc. |
- * All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions |
- * are met: |
- * |
- * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * |
- * 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. |
- * |
- * Neither the name of the Cisco Systems, Inc. nor the names of its |
- * contributors may be used to endorse or promote products derived |
- * from this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- * "AS IS" AND ANY EXPRESS 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 |
- * COPYRIGHT HOLDERS OR 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. |
- * |
- */ |
- |
- |
-#ifdef HAVE_CONFIG_H |
- #include <config.h> |
-#endif |
- |
-#include "alloc.h" |
- |
-#include "crypto_kernel.h" |
- |
-/* the debug module for the crypto_kernel */ |
- |
-debug_module_t mod_crypto_kernel = { |
- 0, /* debugging is off by default */ |
- "crypto kernel" /* printable name for module */ |
-}; |
- |
-/* |
- * other debug modules that can be included in the kernel |
- */ |
- |
-extern debug_module_t mod_auth; |
-extern debug_module_t mod_cipher; |
-extern debug_module_t mod_stat; |
-extern debug_module_t mod_alloc; |
- |
-/* |
- * cipher types that can be included in the kernel |
- */ |
- |
-extern cipher_type_t null_cipher; |
-extern cipher_type_t aes_icm; |
-#ifndef OPENSSL |
-extern cipher_type_t aes_cbc; |
-#else |
-#ifndef SRTP_NO_AES192 |
-extern cipher_type_t aes_icm_192; |
-#endif |
-extern cipher_type_t aes_icm_256; |
-extern cipher_type_t aes_gcm_128_openssl; |
-extern cipher_type_t aes_gcm_256_openssl; |
-#endif |
- |
- |
-/* |
- * auth func types that can be included in the kernel |
- */ |
- |
-extern auth_type_t null_auth; |
-extern auth_type_t hmac; |
- |
-/* crypto_kernel is a global variable, the only one of its datatype */ |
- |
-crypto_kernel_t |
-crypto_kernel = { |
- crypto_kernel_state_insecure, /* start off in insecure state */ |
- NULL, /* no cipher types yet */ |
- NULL, /* no auth types yet */ |
- NULL /* no debug modules yet */ |
-}; |
- |
-#define MAX_RNG_TRIALS 25 |
- |
-err_status_t |
-crypto_kernel_init() { |
- err_status_t status; |
- |
- /* check the security state */ |
- if (crypto_kernel.state == crypto_kernel_state_secure) { |
- |
- /* |
- * we're already in the secure state, but we've been asked to |
- * re-initialize, so we just re-run the self-tests and then return |
- */ |
- return crypto_kernel_status(); |
- } |
- |
- /* initialize error reporting system */ |
- status = err_reporting_init("crypto"); |
- if (status) |
- return status; |
- |
- /* load debug modules */ |
- status = crypto_kernel_load_debug_module(&mod_crypto_kernel); |
- if (status) |
- return status; |
- status = crypto_kernel_load_debug_module(&mod_auth); |
- if (status) |
- return status; |
- status = crypto_kernel_load_debug_module(&mod_cipher); |
- if (status) |
- return status; |
- status = crypto_kernel_load_debug_module(&mod_stat); |
- if (status) |
- return status; |
- status = crypto_kernel_load_debug_module(&mod_alloc); |
- if (status) |
- return status; |
- |
- /* initialize random number generator */ |
- status = rand_source_init(); |
- if (status) |
- return status; |
- |
- /* run FIPS-140 statistical tests on rand_source */ |
- status = stat_test_rand_source_with_repetition(rand_source_get_octet_string, MAX_RNG_TRIALS); |
- if (status) |
- return status; |
- |
-#ifndef OPENSSL |
- /* initialize pseudorandom number generator */ |
- status = ctr_prng_init(rand_source_get_octet_string); |
- if (status) |
- return status; |
- |
- /* run FIPS-140 statistical tests on ctr_prng */ |
- status = stat_test_rand_source_with_repetition(ctr_prng_get_octet_string, MAX_RNG_TRIALS); |
- if (status) |
- return status; |
-#endif |
- |
- /* load cipher types */ |
- status = crypto_kernel_load_cipher_type(&null_cipher, NULL_CIPHER); |
- if (status) |
- return status; |
- status = crypto_kernel_load_cipher_type(&aes_icm, AES_ICM); |
- if (status) |
- return status; |
-#ifndef OPENSSL |
- status = crypto_kernel_load_cipher_type(&aes_cbc, AES_CBC); |
- if (status) |
- return status; |
-#else |
-#ifndef SRTP_NO_AES192 |
- status = crypto_kernel_load_cipher_type(&aes_icm_192, AES_192_ICM); |
- if (status) { |
- return status; |
- } |
-#endif |
- status = crypto_kernel_load_cipher_type(&aes_icm_256, AES_256_ICM); |
- if (status) { |
- return status; |
- } |
- status = crypto_kernel_load_cipher_type(&aes_gcm_128_openssl, AES_128_GCM); |
- if (status) { |
- return status; |
- } |
- status = crypto_kernel_load_cipher_type(&aes_gcm_256_openssl, AES_256_GCM); |
- if (status) { |
- return status; |
- } |
-#endif |
- |
- /* load auth func types */ |
- status = crypto_kernel_load_auth_type(&null_auth, NULL_AUTH); |
- if (status) |
- return status; |
- status = crypto_kernel_load_auth_type(&hmac, HMAC_SHA1); |
- if (status) |
- return status; |
- |
- /* change state to secure */ |
- crypto_kernel.state = crypto_kernel_state_secure; |
- |
- return err_status_ok; |
-} |
- |
-err_status_t |
-crypto_kernel_status() { |
- err_status_t status; |
- kernel_cipher_type_t *ctype = crypto_kernel.cipher_type_list; |
- kernel_auth_type_t *atype = crypto_kernel.auth_type_list; |
- kernel_debug_module_t *dm = crypto_kernel.debug_module_list; |
- |
- /* run FIPS-140 statistical tests on rand_source */ |
- printf("testing rand_source..."); |
- status = stat_test_rand_source_with_repetition(rand_source_get_octet_string, MAX_RNG_TRIALS); |
- if (status) { |
- printf("failed\n"); |
- crypto_kernel.state = crypto_kernel_state_insecure; |
- return status; |
- } |
- printf("passed\n"); |
- |
- /* for each cipher type, describe and test */ |
- while(ctype != NULL) { |
- printf("cipher: %s\n", ctype->cipher_type->description); |
- printf(" instance count: %d\n", ctype->cipher_type->ref_count); |
- printf(" self-test: "); |
- status = cipher_type_self_test(ctype->cipher_type); |
- if (status) { |
- printf("failed with error code %d\n", status); |
- exit(status); |
- } |
- printf("passed\n"); |
- ctype = ctype->next; |
- } |
- |
- /* for each auth type, describe and test */ |
- while(atype != NULL) { |
- printf("auth func: %s\n", atype->auth_type->description); |
- printf(" instance count: %d\n", atype->auth_type->ref_count); |
- printf(" self-test: "); |
- status = auth_type_self_test(atype->auth_type); |
- if (status) { |
- printf("failed with error code %d\n", status); |
- exit(status); |
- } |
- printf("passed\n"); |
- atype = atype->next; |
- } |
- |
- /* describe each debug module */ |
- printf("debug modules loaded:\n"); |
- while (dm != NULL) { |
- printf(" %s ", dm->mod->name); |
- if (dm->mod->on) |
- printf("(on)\n"); |
- else |
- printf("(off)\n"); |
- dm = dm->next; |
- } |
- |
- return err_status_ok; |
-} |
- |
-err_status_t |
-crypto_kernel_list_debug_modules() { |
- kernel_debug_module_t *dm = crypto_kernel.debug_module_list; |
- |
- /* describe each debug module */ |
- printf("debug modules loaded:\n"); |
- while (dm != NULL) { |
- printf(" %s ", dm->mod->name); |
- if (dm->mod->on) |
- printf("(on)\n"); |
- else |
- printf("(off)\n"); |
- dm = dm->next; |
- } |
- |
- return err_status_ok; |
-} |
- |
-err_status_t |
-crypto_kernel_shutdown() { |
- err_status_t status; |
- |
- /* |
- * free dynamic memory used in crypto_kernel at present |
- */ |
- |
- /* walk down cipher type list, freeing memory */ |
- while (crypto_kernel.cipher_type_list != NULL) { |
- kernel_cipher_type_t *ctype = crypto_kernel.cipher_type_list; |
- crypto_kernel.cipher_type_list = ctype->next; |
- debug_print(mod_crypto_kernel, |
- "freeing memory for cipher %s", |
- ctype->cipher_type->description); |
- crypto_free(ctype); |
- } |
- |
- /* walk down authetication module list, freeing memory */ |
- while (crypto_kernel.auth_type_list != NULL) { |
- kernel_auth_type_t *atype = crypto_kernel.auth_type_list; |
- crypto_kernel.auth_type_list = atype->next; |
- debug_print(mod_crypto_kernel, |
- "freeing memory for authentication %s", |
- atype->auth_type->description); |
- crypto_free(atype); |
- } |
- |
- /* walk down debug module list, freeing memory */ |
- while (crypto_kernel.debug_module_list != NULL) { |
- kernel_debug_module_t *kdm = crypto_kernel.debug_module_list; |
- crypto_kernel.debug_module_list = kdm->next; |
- debug_print(mod_crypto_kernel, |
- "freeing memory for debug module %s", |
- kdm->mod->name); |
- crypto_free(kdm); |
- } |
- |
- /* de-initialize random number generator */ status = rand_source_deinit(); |
- if (status) |
- return status; |
- |
- /* return to insecure state */ |
- crypto_kernel.state = crypto_kernel_state_insecure; |
- |
- return err_status_ok; |
-} |
- |
-static inline err_status_t |
-crypto_kernel_do_load_cipher_type(cipher_type_t *new_ct, cipher_type_id_t id, |
- int replace) { |
- kernel_cipher_type_t *ctype, *new_ctype; |
- err_status_t status; |
- |
- /* defensive coding */ |
- if (new_ct == NULL) |
- return err_status_bad_param; |
- |
- if (new_ct->id != id) |
- return err_status_bad_param; |
- |
- /* check cipher type by running self-test */ |
- status = cipher_type_self_test(new_ct); |
- if (status) { |
- return status; |
- } |
- |
- /* walk down list, checking if this type is in the list already */ |
- ctype = crypto_kernel.cipher_type_list; |
- while (ctype != NULL) { |
- if (id == ctype->id) { |
- if (!replace) |
- return err_status_bad_param; |
- status = cipher_type_test(new_ct, ctype->cipher_type->test_data); |
- if (status) |
- return status; |
- new_ctype = ctype; |
- break; |
- } |
- else if (new_ct == ctype->cipher_type) |
- return err_status_bad_param; |
- ctype = ctype->next; |
- } |
- |
- /* if not found, put new_ct at the head of the list */ |
- if (ctype == NULL) { |
- /* allocate memory */ |
- new_ctype = (kernel_cipher_type_t *) crypto_alloc(sizeof(kernel_cipher_type_t)); |
- if (new_ctype == NULL) |
- return err_status_alloc_fail; |
- new_ctype->next = crypto_kernel.cipher_type_list; |
- |
- /* set head of list to new cipher type */ |
- crypto_kernel.cipher_type_list = new_ctype; |
- } |
- |
- /* set fields */ |
- new_ctype->cipher_type = new_ct; |
- new_ctype->id = id; |
- |
- /* load debug module, if there is one present */ |
- if (new_ct->debug != NULL) |
- crypto_kernel_load_debug_module(new_ct->debug); |
- /* we could check for errors here */ |
- |
- return err_status_ok; |
-} |
- |
-err_status_t |
-crypto_kernel_load_cipher_type(cipher_type_t *new_ct, cipher_type_id_t id) { |
- return crypto_kernel_do_load_cipher_type(new_ct, id, 0); |
-} |
- |
-err_status_t |
-crypto_kernel_replace_cipher_type(cipher_type_t *new_ct, cipher_type_id_t id) { |
- return crypto_kernel_do_load_cipher_type(new_ct, id, 1); |
-} |
- |
-err_status_t |
-crypto_kernel_do_load_auth_type(auth_type_t *new_at, auth_type_id_t id, |
- int replace) { |
- kernel_auth_type_t *atype, *new_atype; |
- err_status_t status; |
- |
- /* defensive coding */ |
- if (new_at == NULL) |
- return err_status_bad_param; |
- |
- if (new_at->id != id) |
- return err_status_bad_param; |
- |
- /* check auth type by running self-test */ |
- status = auth_type_self_test(new_at); |
- if (status) { |
- return status; |
- } |
- |
- /* walk down list, checking if this type is in the list already */ |
- atype = crypto_kernel.auth_type_list; |
- while (atype != NULL) { |
- if (id == atype->id) { |
- if (!replace) |
- return err_status_bad_param; |
- status = auth_type_test(new_at, atype->auth_type->test_data); |
- if (status) |
- return status; |
- new_atype = atype; |
- break; |
- } |
- else if (new_at == atype->auth_type) |
- return err_status_bad_param; |
- atype = atype->next; |
- } |
- |
- /* if not found, put new_at at the head of the list */ |
- if (atype == NULL) { |
- /* allocate memory */ |
- new_atype = (kernel_auth_type_t *)crypto_alloc(sizeof(kernel_auth_type_t)); |
- if (new_atype == NULL) |
- return err_status_alloc_fail; |
- |
- new_atype->next = crypto_kernel.auth_type_list; |
- /* set head of list to new auth type */ |
- crypto_kernel.auth_type_list = new_atype; |
- } |
- |
- /* set fields */ |
- new_atype->auth_type = new_at; |
- new_atype->id = id; |
- |
- /* load debug module, if there is one present */ |
- if (new_at->debug != NULL) |
- crypto_kernel_load_debug_module(new_at->debug); |
- /* we could check for errors here */ |
- |
- return err_status_ok; |
- |
-} |
- |
-err_status_t |
-crypto_kernel_load_auth_type(auth_type_t *new_at, auth_type_id_t id) { |
- return crypto_kernel_do_load_auth_type(new_at, id, 0); |
-} |
- |
-err_status_t |
-crypto_kernel_replace_auth_type(auth_type_t *new_at, auth_type_id_t id) { |
- return crypto_kernel_do_load_auth_type(new_at, id, 1); |
-} |
- |
- |
-cipher_type_t * |
-crypto_kernel_get_cipher_type(cipher_type_id_t id) { |
- kernel_cipher_type_t *ctype; |
- |
- /* walk down list, looking for id */ |
- ctype = crypto_kernel.cipher_type_list; |
- while (ctype != NULL) { |
- if (id == ctype->id) |
- return ctype->cipher_type; |
- ctype = ctype->next; |
- } |
- |
- /* haven't found the right one, indicate failure by returning NULL */ |
- return NULL; |
-} |
- |
- |
-err_status_t |
-crypto_kernel_alloc_cipher(cipher_type_id_t id, |
- cipher_pointer_t *cp, |
- int key_len, |
- int tag_len) { |
- cipher_type_t *ct; |
- |
- /* |
- * if the crypto_kernel is not yet initialized, we refuse to allocate |
- * any ciphers - this is a bit extra-paranoid |
- */ |
- if (crypto_kernel.state != crypto_kernel_state_secure) |
- return err_status_init_fail; |
- |
- ct = crypto_kernel_get_cipher_type(id); |
- if (!ct) |
- return err_status_fail; |
- |
- return ((ct)->alloc(cp, key_len, tag_len)); |
-} |
- |
- |
- |
-auth_type_t * |
-crypto_kernel_get_auth_type(auth_type_id_t id) { |
- kernel_auth_type_t *atype; |
- |
- /* walk down list, looking for id */ |
- atype = crypto_kernel.auth_type_list; |
- while (atype != NULL) { |
- if (id == atype->id) |
- return atype->auth_type; |
- atype = atype->next; |
- } |
- |
- /* haven't found the right one, indicate failure by returning NULL */ |
- return NULL; |
-} |
- |
-err_status_t |
-crypto_kernel_alloc_auth(auth_type_id_t id, |
- auth_pointer_t *ap, |
- int key_len, |
- int tag_len) { |
- auth_type_t *at; |
- |
- /* |
- * if the crypto_kernel is not yet initialized, we refuse to allocate |
- * any auth functions - this is a bit extra-paranoid |
- */ |
- if (crypto_kernel.state != crypto_kernel_state_secure) |
- return err_status_init_fail; |
- |
- at = crypto_kernel_get_auth_type(id); |
- if (!at) |
- return err_status_fail; |
- |
- return ((at)->alloc(ap, key_len, tag_len)); |
-} |
- |
-err_status_t |
-crypto_kernel_load_debug_module(debug_module_t *new_dm) { |
- kernel_debug_module_t *kdm, *new; |
- |
- /* defensive coding */ |
- if (new_dm == NULL) |
- return err_status_bad_param; |
- |
- /* walk down list, checking if this type is in the list already */ |
- kdm = crypto_kernel.debug_module_list; |
- while (kdm != NULL) { |
- if (strncmp(new_dm->name, kdm->mod->name, 64) == 0) |
- return err_status_bad_param; |
- kdm = kdm->next; |
- } |
- |
- /* put new_dm at the head of the list */ |
- /* allocate memory */ |
- new = (kernel_debug_module_t *)crypto_alloc(sizeof(kernel_debug_module_t)); |
- if (new == NULL) |
- return err_status_alloc_fail; |
- |
- /* set fields */ |
- new->mod = new_dm; |
- new->next = crypto_kernel.debug_module_list; |
- |
- /* set head of list to new cipher type */ |
- crypto_kernel.debug_module_list = new; |
- |
- return err_status_ok; |
-} |
- |
-err_status_t |
-crypto_kernel_set_debug_module(char *name, int on) { |
- kernel_debug_module_t *kdm; |
- |
- /* walk down list, checking if this type is in the list already */ |
- kdm = crypto_kernel.debug_module_list; |
- while (kdm != NULL) { |
- if (strncmp(name, kdm->mod->name, 64) == 0) { |
- kdm->mod->on = on; |
- return err_status_ok; |
- } |
- kdm = kdm->next; |
- } |
- |
- return err_status_fail; |
-} |
- |
-err_status_t |
-crypto_get_random(unsigned char *buffer, unsigned int length) { |
- if (crypto_kernel.state == crypto_kernel_state_secure) |
-#ifdef OPENSSL |
- return rand_source_get_octet_string(buffer, length); |
-#else |
- return ctr_prng_get_octet_string(buffer, length); |
-#endif |
- else |
- return err_status_fail; |
-} |