535.86.05

kernel-open/nvidia/libspdm_ec.c

@@ -0,0 +1,172 @@
+/*
+* SPDX-FileCopyrightText: Copyright (c) 2022 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.
+*
+* Comments, 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"
+
+static bool lkca_ecdsa_sign(void *ec_context,
+                            const uint8_t *message_hash, size_t hash_size,
+                            uint8_t *signature, size_t *sig_size)
+{
+    return false;
+}
+
+bool libspdm_ec_set_pub_key(void *ec_context, const uint8_t *public_key,
+                            size_t public_key_size)
+{
+    if (ec_context == NULL || public_key == NULL) {
+        return false;
+    }
+
+    return lkca_ec_set_pub_key(ec_context, public_key, public_key_size);
+}
+
+bool libspdm_ec_get_pub_key(void *ec_context, uint8_t *public_key,
+                            size_t *public_key_size)
+{
+    if (ec_context == NULL || public_key_size == NULL) {
+        return false;
+    }
+
+    if (public_key == NULL && *public_key_size != 0) {
+        return false;
+    }
+
+    return lkca_ec_get_pub_key(ec_context, public_key, public_key_size);
+}
+
+bool libspdm_ec_check_key(const void *ec_context)
+{
+    /* TBD*/
+    return true;
+}
+
+bool libspdm_ec_generate_key(void *ec_context, uint8_t *public_data,
+                             size_t *public_size)
+{
+    if (ec_context == NULL || public_size == NULL) {
+        return false;
+    }
+
+    if (public_data == NULL && *public_size != 0) {
+        return false;
+    }
+
+    return lkca_ec_generate_key(ec_context, public_data, public_size);
+}
+
+bool libspdm_ec_compute_key(void *ec_context, const uint8_t *peer_public,
+                            size_t peer_public_size, uint8_t *key,
+                            size_t *key_size)
+{
+    if (ec_context == NULL || peer_public == NULL || key_size == NULL ||
+        key == NULL) {
+        return false;
+    }
+
+    if (peer_public_size > INT_MAX) {
+        return false;
+    }
+
+    return lkca_ec_compute_key(ec_context, peer_public, peer_public_size, key,
+                               key_size);
+}
+
+bool libspdm_ecdsa_sign(void *ec_context, size_t hash_nid,
+                        const uint8_t *message_hash, size_t hash_size,
+                        uint8_t *signature, size_t *sig_size)
+{
+    if (ec_context == NULL || message_hash == NULL) {
+        return false;
+    }
+
+    if (signature == NULL) {
+        return false;
+    }
+
+    switch (hash_nid) {
+        case LIBSPDM_CRYPTO_NID_SHA256:
+            if (hash_size != LIBSPDM_SHA256_DIGEST_SIZE) {
+                return false;
+            }
+            break;
+
+        case LIBSPDM_CRYPTO_NID_SHA384:
+            if (hash_size != LIBSPDM_SHA384_DIGEST_SIZE) {
+                return false;
+            }
+            break;
+
+        case LIBSPDM_CRYPTO_NID_SHA512:
+            if (hash_size != LIBSPDM_SHA512_DIGEST_SIZE) {
+                return false;
+            }
+            break;
+
+        default:
+            return false;
+    }
+
+    return lkca_ecdsa_sign(ec_context, message_hash, hash_size, signature, sig_size);
+}
+
+bool libspdm_ecdsa_verify(void *ec_context, size_t hash_nid,
+                          const uint8_t *message_hash, size_t hash_size,
+                          const uint8_t *signature, size_t sig_size)
+{
+    if (ec_context == NULL || message_hash == NULL || signature == NULL) {
+        return false;
+    }
+
+    if (sig_size > INT_MAX || sig_size == 0) {
+        return false;
+    }
+
+    switch (hash_nid) {
+    case LIBSPDM_CRYPTO_NID_SHA256:
+        if (hash_size != LIBSPDM_SHA256_DIGEST_SIZE) {
+            return false;
+        }
+        break;
+
+    case LIBSPDM_CRYPTO_NID_SHA384:
+        if (hash_size != LIBSPDM_SHA384_DIGEST_SIZE) {
+            return false;
+        }
+        break;
+
+    case LIBSPDM_CRYPTO_NID_SHA512:
+        if (hash_size != LIBSPDM_SHA512_DIGEST_SIZE) {
+            return false;
+        }
+        break;
+
+    default:
+        return false;
+    }
+
+    return lkca_ecdsa_verify(ec_context, hash_nid, message_hash, hash_size,
+                             signature, sig_size);
+}