1 /*
2  * Copyright 2019-2021 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 #define UNINITIALISED_SIZET ((size_t)-1)
11 
12 #define AEAD_FLAGS (PROV_CIPHER_FLAG_AEAD | PROV_CIPHER_FLAG_CUSTOM_IV)
13 
14 #define IMPLEMENT_aead_cipher(alg, lc, UCMODE, flags, kbits, blkbits, ivbits)  \
15 static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_##lc##_get_params;       \
16 static int alg##_##kbits##_##lc##_get_params(OSSL_PARAM params[])              \
17 {                                                                              \
18     return ossl_cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE,    \
19                                           flags, kbits, blkbits, ivbits);      \
20 }                                                                              \
21 static OSSL_FUNC_cipher_newctx_fn alg##kbits##lc##_newctx;                     \
22 static void * alg##kbits##lc##_newctx(void *provctx)                           \
23 {                                                                              \
24     return alg##_##lc##_newctx(provctx, kbits);                                \
25 }                                                                              \
26 const OSSL_DISPATCH ossl_##alg##kbits##lc##_functions[] = {                    \
27     { OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))alg##kbits##lc##_newctx },      \
28     { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))alg##_##lc##_freectx },        \
29     { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))ossl_##lc##_einit },      \
30     { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))ossl_##lc##_dinit },      \
31     { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))ossl_##lc##_stream_update },    \
32     { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))ossl_##lc##_stream_final },      \
33     { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))ossl_##lc##_cipher },           \
34     { OSSL_FUNC_CIPHER_GET_PARAMS,                                             \
35       (void (*)(void)) alg##_##kbits##_##lc##_get_params },                    \
36     { OSSL_FUNC_CIPHER_GET_CTX_PARAMS,                                         \
37       (void (*)(void)) ossl_##lc##_get_ctx_params },                           \
38     { OSSL_FUNC_CIPHER_SET_CTX_PARAMS,                                         \
39       (void (*)(void)) ossl_##lc##_set_ctx_params },                           \
40     { OSSL_FUNC_CIPHER_GETTABLE_PARAMS,                                        \
41       (void (*)(void))ossl_cipher_generic_gettable_params },                   \
42     { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,                                    \
43       (void (*)(void))ossl_cipher_aead_gettable_ctx_params },                  \
44     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
45       (void (*)(void))ossl_cipher_aead_settable_ctx_params },                  \
46     { 0, NULL }                                                                \
47 }
48