providers/common/include/internal/ciphers/cipher_aead.h

   1 /*
   2  * Copyright 2019 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 /* TODO(3.0) Figure out what flags are really needed */
  13 #define AEAD_FLAGS (EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_DEFAULT_ASN1     \
  14                        | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER      \
  15                        | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT        \
  16                        | EVP_CIPH_CUSTOM_COPY)
  17
  18 #define IMPLEMENT_aead_cipher(alg, lc, UCMODE, flags, kbits, blkbits, ivbits)  \
  19 static OSSL_OP_cipher_get_params_fn alg##_##kbits##_##lc##_get_params;         \
  20 static int alg##_##kbits##_##lc##_get_params(OSSL_PARAM params[])              \
  21 {                                                                              \
  22     return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE,         \
  23                                      flags, kbits, blkbits, ivbits);           \
  24 }                                                                              \
  25 static OSSL_OP_cipher_newctx_fn alg##kbits##lc##_newctx;                       \
  26 static void * alg##kbits##lc##_newctx(void *provctx)                           \
  27 {                                                                              \
  28     return alg##_##lc##_newctx(provctx, kbits);                                \
  29 }                                                                              \
  30 const OSSL_DISPATCH alg##kbits##lc##_functions[] = {                           \
  31     { OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))alg##kbits##lc##_newctx },      \
  32     { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))alg##_##lc##_freectx },        \
  33     { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void)) lc##_einit },            \
  34     { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void)) lc##_dinit },            \
  35     { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void)) lc##_stream_update },          \
  36     { OSSL_FUNC_CIPHER_FINAL, (void (*)(void)) lc##_stream_final },            \
  37     { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void)) lc##_cipher },                 \
  38     { OSSL_FUNC_CIPHER_GET_PARAMS,                                             \
  39       (void (*)(void)) alg##_##kbits##_##lc##_get_params },                    \
  40     { OSSL_FUNC_CIPHER_GET_CTX_PARAMS,                                         \
  41       (void (*)(void)) lc##_get_ctx_params },                                  \
  42     { OSSL_FUNC_CIPHER_SET_CTX_PARAMS,                                         \
  43       (void (*)(void)) lc##_set_ctx_params },                                  \
  44     { OSSL_FUNC_CIPHER_GETTABLE_PARAMS,                                        \
  45       (void (*)(void))cipher_generic_gettable_params },                        \
  46     { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,                                    \
  47       (void (*)(void))cipher_aead_gettable_ctx_params },                       \
  48     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
  49       (void (*)(void))cipher_aead_settable_ctx_params },                       \
  50     { 0, NULL }                                                                \
  51 }