providers/implementations/digests/digestcommon.c

   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 #include <openssl/err.h>
  11 #include <openssl/proverr.h>
  12 #include "prov/digestcommon.h"
  13
  14 int ossl_digest_default_get_params(OSSL_PARAM params[], size_t blksz,
  15                                    size_t paramsz, unsigned long flags)
  16 {
  17     OSSL_PARAM *p = NULL;
  18
  19     p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_BLOCK_SIZE);
  20     if (p != NULL && !OSSL_PARAM_set_size_t(p, blksz)) {
  21         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
  22         return 0;
  23     }
  24     p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_SIZE);
  25     if (p != NULL && !OSSL_PARAM_set_size_t(p, paramsz)) {
  26         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
  27         return 0;
  28     }
  29     p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_XOF);
  30     if (p != NULL
  31         && !OSSL_PARAM_set_int(p, (flags & PROV_DIGEST_FLAG_XOF) != 0)) {
  32         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
  33         return 0;
  34     }
  35     p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_ALGID_ABSENT);
  36     if (p != NULL
  37         && !OSSL_PARAM_set_int(p, (flags & PROV_DIGEST_FLAG_ALGID_ABSENT) != 0)) {
  38         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
  39         return 0;
  40     }
  41     return 1;
  42 }
  43
  44 static const OSSL_PARAM digest_default_known_gettable_params[] = {
  45     OSSL_PARAM_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE, NULL),
  46     OSSL_PARAM_size_t(OSSL_DIGEST_PARAM_SIZE, NULL),
  47     OSSL_PARAM_int(OSSL_DIGEST_PARAM_XOF, NULL),
  48     OSSL_PARAM_int(OSSL_DIGEST_PARAM_ALGID_ABSENT, NULL),
  49     OSSL_PARAM_END
  50 };
  51 const OSSL_PARAM *ossl_digest_default_gettable_params(void *provctx)
  52 {
  53     return digest_default_known_gettable_params;
  54 }