crypto/ec/ecx_key.c

   1 /*
   2  * Copyright 2020 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 "crypto/ecx.h"
  12
  13 ECX_KEY *ecx_key_new(size_t keylen, int haspubkey)
  14 {
  15     ECX_KEY *ret = OPENSSL_zalloc(sizeof(*ret));
  16
  17     if (ret == NULL)
  18         return NULL;
  19
  20     ret->haspubkey = haspubkey;
  21     ret->keylen = keylen;
  22     ret->references = 1;
  23
  24     ret->lock = CRYPTO_THREAD_lock_new();
  25     if (ret->lock == NULL) {
  26         ERR_raise(ERR_LIB_EC, ERR_R_MALLOC_FAILURE);
  27         OPENSSL_free(ret);
  28         return NULL;
  29     }
  30
  31     return ret;
  32 }
  33
  34 void ecx_key_free(ECX_KEY *key)
  35 {
  36     int i;
  37
  38     if (key == NULL)
  39         return;
  40
  41     CRYPTO_DOWN_REF(&key->references, &i, key->lock);
  42     REF_PRINT_COUNT("ECX_KEY", r);
  43     if (i > 0)
  44         return;
  45     REF_ASSERT_ISNT(i < 0);
  46
  47     OPENSSL_secure_clear_free(key->privkey, key->keylen);
  48     CRYPTO_THREAD_lock_free(key->lock);
  49     OPENSSL_free(key);
  50 }
  51
  52 int ecx_key_up_ref(ECX_KEY *key)
  53 {
  54     int i;
  55
  56     if (CRYPTO_UP_REF(&key->references, &i, key->lock) <= 0)
  57         return 0;
  58
  59     REF_PRINT_COUNT("ECX_KEY", key);
  60     REF_ASSERT_ISNT(i < 2);
  61     return ((i > 1) ? 1 : 0);
  62 }
  63
  64 unsigned char *ecx_key_allocate_privkey(ECX_KEY *key)
  65 {
  66     key->privkey = OPENSSL_secure_zalloc(key->keylen);
  67
  68     return key->privkey;
  69 }