535.86.05

kernel-open/nvidia/libspdm_aead_aes_gcm.c

@@ -0,0 +1,117 @@
+/*
+* SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+* SPDX-License-Identifier: MIT
+*
+* Permission is hereby granted, free of charge, to any person obtaining a
+* copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense,
+* and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+* DEALINGS IN THE SOFTWARE.
+*
+* Prototypes and checks taken from DMTF: Copyright 2021-2022 DMTF. All rights reserved.
+* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
+*/
+
+#include "internal_crypt_lib.h"
+
+bool libspdm_aead_aes_gcm_encrypt(const uint8_t *key, size_t key_size,
+                                  const uint8_t *iv, size_t iv_size,
+                                  const uint8_t *a_data, size_t a_data_size,
+                                  const uint8_t *data_in, size_t data_in_size,
+                                  uint8_t *tag_out, size_t tag_size,
+                                  uint8_t *data_out, size_t *data_out_size)
+{
+    int32_t ret;
+
+    if (data_in_size > INT_MAX) {
+        return false;
+    }
+    if (a_data_size > INT_MAX) {
+        return false;
+    }
+    if (iv_size != 12) {
+        return false;
+    }
+    switch (key_size) {
+    case 16:
+    case 24:
+    case 32:
+        break;
+    default:
+        return false;
+    }
+    if ((tag_size < 12) || (tag_size > 16)) {
+        return false;
+    }
+    if (data_out_size != NULL) {
+        if ((*data_out_size > INT_MAX) ||
+            (*data_out_size < data_in_size)) {
+            return false;
+        }
+    }
+
+    ret = libspdm_aead(key, key_size, iv, iv_size, a_data, a_data_size,
+                       data_in, data_in_size, tag_out, tag_size,
+                       data_out, data_out_size, true, "gcm(aes)");
+
+    *data_out_size = data_in_size;
+
+    return ret == 0;
+}
+
+bool libspdm_aead_aes_gcm_decrypt(const uint8_t *key, size_t key_size,
+                                  const uint8_t *iv, size_t iv_size,
+                                  const uint8_t *a_data, size_t a_data_size,
+                                  const uint8_t *data_in, size_t data_in_size,
+                                  const uint8_t *tag, size_t tag_size,
+                                  uint8_t *data_out, size_t *data_out_size)
+{
+    int ret;
+    if (data_in_size > INT_MAX) {
+        return false;
+    }
+    if (a_data_size > INT_MAX) {
+        return false;
+    }
+    if (iv_size != 12) {
+        return false;
+    }
+    switch (key_size) {
+    case 16:
+    case 24:
+    case 32:
+        break;
+    default:
+        return false;
+    }
+    if ((tag_size < 12) || (tag_size > 16)) {
+        return false;
+    }
+    if (data_out_size != NULL) {
+        if ((*data_out_size > INT_MAX) ||
+            (*data_out_size < data_in_size)) {
+            return false;
+        }
+    }
+
+    ret = libspdm_aead(key, key_size, iv, iv_size, a_data, a_data_size,
+                       data_in, data_in_size, tag, tag_size,
+                       data_out, data_out_size, false, "gcm(aes)");
+
+    *data_out_size = data_in_size;
+
+    return ret == 0;
+
+}