/src/openssl/providers/implementations/ciphers/cipher_aes_gcm.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright 2019-2023 The OpenSSL Project Authors. All Rights Reserved. |
3 | | * |
4 | | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | | * this file except in compliance with the License. You can obtain a copy |
6 | | * in the file LICENSE in the source distribution or at |
7 | | * https://www.openssl.org/source/license.html |
8 | | */ |
9 | | |
10 | | /* |
11 | | * AES low level APIs are deprecated for public use, but still ok for internal |
12 | | * use where we're using them to implement the higher level EVP interface, as is |
13 | | * the case here. |
14 | | */ |
15 | | #include "internal/deprecated.h" |
16 | | |
17 | | /* Dispatch functions for AES GCM mode */ |
18 | | |
19 | | #include "cipher_aes_gcm.h" |
20 | | #include "prov/implementations.h" |
21 | | #include "prov/providercommon.h" |
22 | | |
23 | | static void *aes_gcm_newctx(void *provctx, size_t keybits) |
24 | 204 | { |
25 | 204 | PROV_AES_GCM_CTX *ctx; |
26 | | |
27 | 204 | if (!ossl_prov_is_running()) |
28 | 0 | return NULL; |
29 | | |
30 | 204 | ctx = OPENSSL_zalloc(sizeof(*ctx)); |
31 | 204 | if (ctx != NULL) |
32 | 204 | ossl_gcm_initctx(provctx, &ctx->base, keybits, |
33 | 204 | ossl_prov_aes_hw_gcm(keybits)); |
34 | 204 | return ctx; |
35 | 204 | } |
36 | | |
37 | | static void *aes_gcm_dupctx(void *provctx) |
38 | 5.48k | { |
39 | 5.48k | PROV_AES_GCM_CTX *ctx = provctx; |
40 | 5.48k | PROV_AES_GCM_CTX *dctx = NULL; |
41 | | |
42 | 5.48k | if (!ossl_prov_is_running()) |
43 | 0 | return NULL; |
44 | | |
45 | 5.48k | if (ctx == NULL) |
46 | 0 | return NULL; |
47 | | |
48 | 5.48k | dctx = OPENSSL_memdup(ctx, sizeof(*ctx)); |
49 | 5.48k | if (dctx != NULL && dctx->base.gcm.key != NULL) |
50 | 5.42k | dctx->base.gcm.key = &dctx->ks.ks; |
51 | | |
52 | 5.48k | return dctx; |
53 | 5.48k | } |
54 | | |
55 | | static OSSL_FUNC_cipher_freectx_fn aes_gcm_freectx; |
56 | | static void aes_gcm_freectx(void *vctx) |
57 | 5.68k | { |
58 | 5.68k | PROV_AES_GCM_CTX *ctx = (PROV_AES_GCM_CTX *)vctx; |
59 | | |
60 | 5.68k | OPENSSL_clear_free(ctx, sizeof(*ctx)); |
61 | 5.68k | } |
62 | | |
63 | | /* ossl_aes128gcm_functions */ |
64 | | IMPLEMENT_aead_cipher(aes, gcm, GCM, AEAD_FLAGS, 128, 8, 96); |
65 | | /* ossl_aes192gcm_functions */ |
66 | | IMPLEMENT_aead_cipher(aes, gcm, GCM, AEAD_FLAGS, 192, 8, 96); |
67 | | /* ossl_aes256gcm_functions */ |
68 | | IMPLEMENT_aead_cipher(aes, gcm, GCM, AEAD_FLAGS, 256, 8, 96); |