Refactor code structure for improved readability and maintainability

2025-12-31 15:18:47 +08:00
commit 8e1b465dad
64 changed files with 21592 additions and 0 deletions
--- a/libsrtp/crypto/include/aes_gcm.h
+++ b/libsrtp/crypto/include/aes_gcm.h
@@ -0,0 +1,134 @@
+/*
+ * aes_gcm.h
+ *
+ * Header for AES Galois Counter Mode.
+ *
+ * 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.
+ *
+ */
+
+#ifndef AES_GCM_H
+#define AES_GCM_H
+
+#include "cipher.h"
+#include "srtp.h"
+#include "datatypes.h"
+
+#ifdef OPENSSL
+
+#include <openssl/evp.h>
+#include <openssl/aes.h>
+
+typedef struct {
+    size_t key_size;
+    size_t tag_len;
+    EVP_CIPHER_CTX *ctx;
+    srtp_cipher_direction_t dir;
+} srtp_aes_gcm_ctx_t;
+
+#endif /* OPENSSL */
+
+#ifdef WOLFSSL
+#define MAX_AD_SIZE 2048
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#ifndef WOLFSSL_USER_SETTINGS
+#include <wolfssl/options.h>
+#endif
+#include <wolfssl/wolfcrypt/settings.h>
+#include <wolfssl/wolfcrypt/aes.h>
+
+typedef struct {
+    size_t key_size;
+    size_t tag_len;
+#ifndef WOLFSSL_AESGCM_STREAM
+    size_t aad_size;
+    size_t iv_len;
+    uint8_t iv[GCM_NONCE_MID_SZ];
+    uint8_t aad[MAX_AD_SIZE];
+#endif
+    Aes *ctx;
+    srtp_cipher_direction_t dir;
+} srtp_aes_gcm_ctx_t;
+
+#endif /* WOLFSSL */
+
+#ifdef MBEDTLS
+#define MAX_AD_SIZE 2048
+#include <mbedtls/aes.h>
+#include <mbedtls/gcm.h>
+
+typedef struct {
+    size_t key_size;
+    size_t tag_len;
+    size_t aad_size;
+    size_t iv_len;
+    uint8_t iv[12];
+    uint8_t aad[MAX_AD_SIZE];
+    mbedtls_gcm_context *ctx;
+    srtp_cipher_direction_t dir;
+} srtp_aes_gcm_ctx_t;
+
+#endif /* MBEDTLS */
+
+#ifdef NSS
+
+#define NSS_PKCS11_2_0_COMPAT 1
+
+#include <nss.h>
+#include <pk11pub.h>
+
+#define MAX_AD_SIZE 2048
+
+typedef struct {
+    size_t key_size;
+    size_t tag_size;
+    srtp_cipher_direction_t dir;
+    NSSInitContext *nss;
+    PK11SymKey *key;
+    uint8_t iv[12];
+    uint8_t aad[MAX_AD_SIZE];
+    size_t aad_size;
+    CK_GCM_PARAMS params;
+} srtp_aes_gcm_ctx_t;
+
+#endif /* NSS */
+
+#endif /* AES_GCM_H */