Repo created

TMessagesProj/jni/third_party/libsrtp/crypto/hash/auth.c

@@ -0,0 +1,185 @@
+/*
+ * auth.c
+ *
+ * some bookkeeping functions for authentication functions
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *
+ * Copyright (c) 2001-2017, 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.
+ *
+ */
+
+#include "config.h"
+
+#include "auth.h"
+#include "err.h"       /* for srtp_debug */
+#include "datatypes.h" /* for octet_string */
+
+/* the debug module for authentiation */
+
+srtp_debug_module_t srtp_mod_auth = {
+    0,          /* debugging is off by default */
+    "auth func" /* printable name for module   */
+};
+
+int srtp_auth_get_key_length(const srtp_auth_t *a)
+{
+    return a->key_len;
+}
+
+int srtp_auth_get_tag_length(const srtp_auth_t *a)
+{
+    return a->out_len;
+}
+
+int srtp_auth_get_prefix_length(const srtp_auth_t *a)
+{
+    return a->prefix_len;
+}
+
+/*
+ * srtp_auth_type_test() tests an auth function of type ct against
+ * test cases provided in a list test_data of values of key, data, and tag
+ * that is known to be good
+ */
+
+/* should be big enough for most occasions */
+#define SELF_TEST_TAG_BUF_OCTETS 32
+
+srtp_err_status_t srtp_auth_type_test(const srtp_auth_type_t *at,
+                                      const srtp_auth_test_case_t *test_data)
+{
+    const srtp_auth_test_case_t *test_case = test_data;
+    srtp_auth_t *a;
+    srtp_err_status_t status;
+    uint8_t tag[SELF_TEST_TAG_BUF_OCTETS];
+    int i, case_num = 0;
+
+    debug_print(srtp_mod_auth, "running self-test for auth function %s",
+                at->description);
+
+    /*
+     * check to make sure that we have at least one test case, and
+     * return an error if we don't - we need to be paranoid here
+     */
+    if (test_case == NULL) {
+        return srtp_err_status_cant_check;
+    }
+
+    /* loop over all test cases */
+    while (test_case != NULL) {
+        /* check test case parameters */
+        if (test_case->tag_length_octets > SELF_TEST_TAG_BUF_OCTETS) {
+            return srtp_err_status_bad_param;
+        }
+
+        /* allocate auth */
+        status = srtp_auth_type_alloc(at, &a, test_case->key_length_octets,
+                                      test_case->tag_length_octets);
+        if (status) {
+            return status;
+        }
+
+        /* initialize auth */
+        status = srtp_auth_init(a, test_case->key);
+        if (status) {
+            srtp_auth_dealloc(a);
+            return status;
+        }
+
+        /* zeroize tag then compute */
+        octet_string_set_to_zero(tag, test_case->tag_length_octets);
+        status = srtp_auth_compute(a, test_case->data,
+                                   test_case->data_length_octets, tag);
+        if (status) {
+            srtp_auth_dealloc(a);
+            return status;
+        }
+
+        debug_print(srtp_mod_auth, "key: %s",
+                    srtp_octet_string_hex_string(test_case->key,
+                                                 test_case->key_length_octets));
+        debug_print(srtp_mod_auth, "data: %s",
+                    srtp_octet_string_hex_string(
+                        test_case->data, test_case->data_length_octets));
+        debug_print(
+            srtp_mod_auth, "tag computed: %s",
+            srtp_octet_string_hex_string(tag, test_case->tag_length_octets));
+        debug_print(srtp_mod_auth, "tag expected: %s",
+                    srtp_octet_string_hex_string(test_case->tag,
+                                                 test_case->tag_length_octets));
+
+        /* check the result */
+        status = srtp_err_status_ok;
+        for (i = 0; i < test_case->tag_length_octets; i++) {
+            if (tag[i] != test_case->tag[i]) {
+                status = srtp_err_status_algo_fail;
+                debug_print(srtp_mod_auth, "test case %d failed", case_num);
+                debug_print(srtp_mod_auth, "  (mismatch at octet %d)", i);
+            }
+        }
+        if (status) {
+            srtp_auth_dealloc(a);
+            return srtp_err_status_algo_fail;
+        }
+
+        /* deallocate the auth function */
+        status = srtp_auth_dealloc(a);
+        if (status) {
+            return status;
+        }
+
+        /*
+         * the auth function passed the test case, so move on to the next test
+         * case in the list; if NULL, we'll quit and return an OK
+         */
+        test_case = test_case->next_test_case;
+        ++case_num;
+    }
+
+    return srtp_err_status_ok;
+}
+
+/*
+ * srtp_auth_type_self_test(at) performs srtp_auth_type_test on at's internal
+ * list of test data.
+ */
+
+srtp_err_status_t srtp_auth_type_self_test(const srtp_auth_type_t *at)
+{
+    return srtp_auth_type_test(at, at->test_data);
+}

TMessagesProj/jni/third_party/libsrtp/crypto/hash/hmac_ossl.c

@@ -0,0 +1,271 @@
+/*
+ * hmac_ossl.c
+ *
+ * Implementation of hmac srtp_auth_type_t that leverages OpenSSL
+ *
+ * John A. Foley
+ * Cisco Systems, Inc.
+ */
+/*
+ *
+ * Copyright(c) 2013-2017, 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.
+ *
+ */
+
+#include "config.h"
+
+#include "auth.h"
+#include "alloc.h"
+#include "err.h" /* for srtp_debug */
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+
+#define SHA1_DIGEST_SIZE 20
+
+/* the debug module for authentiation */
+
+srtp_debug_module_t srtp_mod_hmac = {
+    0,                   /* debugging is off by default */
+    "hmac sha-1 openssl" /* printable name for module   */
+};
+
+static srtp_err_status_t srtp_hmac_alloc(srtp_auth_t **a,
+                                         int key_len,
+                                         int out_len)
+{
+    extern const srtp_auth_type_t srtp_hmac;
+
+    debug_print(srtp_mod_hmac, "allocating auth func with key length %d",
+                key_len);
+    debug_print(srtp_mod_hmac, "                          tag length %d",
+                out_len);
+
+    /* check output length - should be less than 20 bytes */
+    if (out_len > SHA1_DIGEST_SIZE) {
+        return srtp_err_status_bad_param;
+    }
+
+/* OpenSSL 1.1.0 made HMAC_CTX an opaque structure, which must be allocated
+   using HMAC_CTX_new.  But this function doesn't exist in OpenSSL 1.0.x. */
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
+    {
+        /* allocate memory for auth and HMAC_CTX structures */
+        uint8_t *pointer;
+        HMAC_CTX *new_hmac_ctx;
+        pointer = (uint8_t *)srtp_crypto_alloc(sizeof(HMAC_CTX) +
+                                               sizeof(srtp_auth_t));
+        if (pointer == NULL) {
+            return srtp_err_status_alloc_fail;
+        }
+        *a = (srtp_auth_t *)pointer;
+        (*a)->state = pointer + sizeof(srtp_auth_t);
+        new_hmac_ctx = (HMAC_CTX *)((*a)->state);
+
+        HMAC_CTX_init(new_hmac_ctx);
+    }
+
+#else
+    *a = (srtp_auth_t *)srtp_crypto_alloc(sizeof(srtp_auth_t));
+    if (*a == NULL) {
+        return srtp_err_status_alloc_fail;
+    }
+
+    (*a)->state = HMAC_CTX_new();
+    if ((*a)->state == NULL) {
+        srtp_crypto_free(*a);
+        *a = NULL;
+        return srtp_err_status_alloc_fail;
+    }
+#endif
+
+    /* set pointers */
+    (*a)->type = &srtp_hmac;
+    (*a)->out_len = out_len;
+    (*a)->key_len = key_len;
+    (*a)->prefix_len = 0;
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_hmac_dealloc(srtp_auth_t *a)
+{
+    HMAC_CTX *hmac_ctx;
+
+    hmac_ctx = (HMAC_CTX *)a->state;
+
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || LIBRESSL_VERSION_NUMBER
+    HMAC_CTX_cleanup(hmac_ctx);
+
+    /* zeroize entire state*/
+    octet_string_set_to_zero(a, sizeof(HMAC_CTX) + sizeof(srtp_auth_t));
+
+#else
+    HMAC_CTX_free(hmac_ctx);
+
+    /* zeroize entire state*/
+    octet_string_set_to_zero(a, sizeof(srtp_auth_t));
+#endif
+
+    /* free memory */
+    srtp_crypto_free(a);
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_hmac_start(void *statev)
+{
+    HMAC_CTX *state = (HMAC_CTX *)statev;
+
+    if (HMAC_Init_ex(state, NULL, 0, NULL, NULL) == 0)
+        return srtp_err_status_auth_fail;
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_hmac_init(void *statev,
+                                        const uint8_t *key,
+                                        int key_len)
+{
+    HMAC_CTX *state = (HMAC_CTX *)statev;
+
+    if (HMAC_Init_ex(state, key, key_len, EVP_sha1(), NULL) == 0)
+        return srtp_err_status_auth_fail;
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_hmac_update(void *statev,
+                                          const uint8_t *message,
+                                          int msg_octets)
+{
+    HMAC_CTX *state = (HMAC_CTX *)statev;
+
+    debug_print(srtp_mod_hmac, "input: %s",
+                srtp_octet_string_hex_string(message, msg_octets));
+
+    if (HMAC_Update(state, message, msg_octets) == 0)
+        return srtp_err_status_auth_fail;
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_hmac_compute(void *statev,
+                                           const uint8_t *message,
+                                           int msg_octets,
+                                           int tag_len,
+                                           uint8_t *result)
+{
+    HMAC_CTX *state = (HMAC_CTX *)statev;
+    uint8_t hash_value[SHA1_DIGEST_SIZE];
+    int i;
+    unsigned int len;
+
+    /* check tag length, return error if we can't provide the value expected */
+    if (tag_len > SHA1_DIGEST_SIZE) {
+        return srtp_err_status_bad_param;
+    }
+
+    /* hash message, copy output into H */
+    if (HMAC_Update(state, message, msg_octets) == 0)
+        return srtp_err_status_auth_fail;
+
+    if (HMAC_Final(state, hash_value, &len) == 0)
+        return srtp_err_status_auth_fail;
+
+    if (len < tag_len)
+        return srtp_err_status_auth_fail;
+
+    /* copy hash_value to *result */
+    for (i = 0; i < tag_len; i++) {
+        result[i] = hash_value[i];
+    }
+
+    debug_print(srtp_mod_hmac, "output: %s",
+                srtp_octet_string_hex_string(hash_value, tag_len));
+
+    return srtp_err_status_ok;
+}
+
+/* begin test case 0 */
+/* clang-format off */
+static const uint8_t srtp_hmac_test_case_0_key[SHA1_DIGEST_SIZE] = {
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b
+};
+/* clang-format on */
+
+/* clang-format off */
+static const uint8_t srtp_hmac_test_case_0_data[8] = {
+    0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65 /* "Hi There" */
+};
+/* clang-format on */
+
+/* clang-format off */
+static const uint8_t srtp_hmac_test_case_0_tag[SHA1_DIGEST_SIZE] = {
+    0xb6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64,
+    0xe2, 0x8b, 0xc0, 0xb6, 0xfb, 0x37, 0x8c, 0x8e,
+    0xf1, 0x46, 0xbe, 0x00
+};
+/* clang-format on */
+
+static const srtp_auth_test_case_t srtp_hmac_test_case_0 = {
+    sizeof(srtp_hmac_test_case_0_key),  /* octets in key            */
+    srtp_hmac_test_case_0_key,          /* key                      */
+    sizeof(srtp_hmac_test_case_0_data), /* octets in data           */
+    srtp_hmac_test_case_0_data,         /* data                     */
+    sizeof(srtp_hmac_test_case_0_tag),  /* octets in tag            */
+    srtp_hmac_test_case_0_tag,          /* tag                      */
+    NULL                                /* pointer to next testcase */
+};
+
+/* end test case 0 */
+
+static const char srtp_hmac_description[] =
+    "hmac sha-1 authentication function";
+
+/*
+ * srtp_auth_type_t hmac is the hmac metaobject
+ */
+
+const srtp_auth_type_t srtp_hmac = {
+    srtp_hmac_alloc,        /* */
+    srtp_hmac_dealloc,      /* */
+    srtp_hmac_init,         /* */
+    srtp_hmac_compute,      /* */
+    srtp_hmac_update,       /* */
+    srtp_hmac_start,        /* */
+    srtp_hmac_description,  /* */
+    &srtp_hmac_test_case_0, /* */
+    SRTP_HMAC_SHA1          /* */
+};

TMessagesProj/jni/third_party/libsrtp/crypto/hash/null_auth.c

@@ -0,0 +1,166 @@
+/*
+ * null_auth.c
+ *
+ * implements the do-nothing auth algorithm
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ *
+ */
+
+/*
+ *
+ * Copyright (c) 2001-2017, 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.
+ *
+ */
+
+#include "config.h"
+
+#include "null_auth.h"
+#include "err.h" /* for srtp_debug */
+#include "alloc.h"
+#include "cipher_types.h"
+
+static srtp_err_status_t srtp_null_auth_alloc(srtp_auth_t **a,
+                                              int key_len,
+                                              int out_len)
+{
+    extern const srtp_auth_type_t srtp_null_auth;
+    uint8_t *pointer;
+
+    debug_print(srtp_mod_auth, "allocating auth func with key length %d",
+                key_len);
+    debug_print(srtp_mod_auth, "                          tag length %d",
+                out_len);
+
+    /* allocate memory for auth and srtp_null_auth_ctx_t structures */
+    pointer = (uint8_t *)srtp_crypto_alloc(sizeof(srtp_null_auth_ctx_t) +
+                                           sizeof(srtp_auth_t));
+    if (pointer == NULL) {
+        return srtp_err_status_alloc_fail;
+    }
+
+    /* set pointers */
+    *a = (srtp_auth_t *)pointer;
+    (*a)->type = &srtp_null_auth;
+    (*a)->state = pointer + sizeof(srtp_auth_t);
+    (*a)->out_len = out_len;
+    (*a)->prefix_len = out_len;
+    (*a)->key_len = key_len;
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_null_auth_dealloc(srtp_auth_t *a)
+{
+    extern const srtp_auth_type_t srtp_null_auth;
+
+    /* zeroize entire state*/
+    octet_string_set_to_zero(a, sizeof(srtp_null_auth_ctx_t) +
+                                    sizeof(srtp_auth_t));
+
+    /* free memory */
+    srtp_crypto_free(a);
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_null_auth_init(void *statev,
+                                             const uint8_t *key,
+                                             int key_len)
+{
+    /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */
+    /* accept any length of key, and do nothing */
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_null_auth_compute(void *statev,
+                                                const uint8_t *message,
+                                                int msg_octets,
+                                                int tag_len,
+                                                uint8_t *result)
+{
+    /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_null_auth_update(void *statev,
+                                               const uint8_t *message,
+                                               int msg_octets)
+{
+    /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */
+
+    return srtp_err_status_ok;
+}
+
+static srtp_err_status_t srtp_null_auth_start(void *statev)
+{
+    /* srtp_null_auth_ctx_t *state = (srtp_null_auth_ctx_t *)statev; */
+
+    return srtp_err_status_ok;
+}
+
+/*
+ * srtp_auth_type_t - defines description, test case, and null_auth
+ * metaobject
+ */
+
+/* begin test case 0 */
+
+static const srtp_auth_test_case_t srtp_null_auth_test_case_0 = {
+    0,    /* octets in key            */
+    NULL, /* key                      */
+    0,    /* octets in data           */
+    NULL, /* data                     */
+    0,    /* octets in tag            */
+    NULL, /* tag                      */
+    NULL  /* pointer to next testcase */
+};
+
+/* end test case 0 */
+
+static const char srtp_null_auth_description[] = "null authentication function";
+
+const srtp_auth_type_t srtp_null_auth = {
+    srtp_null_auth_alloc,        /* */
+    srtp_null_auth_dealloc,      /* */
+    srtp_null_auth_init,         /* */
+    srtp_null_auth_compute,      /* */
+    srtp_null_auth_update,       /* */
+    srtp_null_auth_start,        /* */
+    srtp_null_auth_description,  /* */
+    &srtp_null_auth_test_case_0, /* */
+    SRTP_NULL_AUTH               /* */
+};