| 1 | /*
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| 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <string.h>
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| 11 | #include <openssl/err.h>
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| 12 | #include "crypto/ecx.h"
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| 13 |
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| 14 | ECX_KEY *ossl_ecx_key_new(OSSL_LIB_CTX *libctx, ECX_KEY_TYPE type, int haspubkey,
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| 15 | const char *propq)
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| 16 | {
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| 17 | ECX_KEY *ret = OPENSSL_zalloc(sizeof(*ret));
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| 18 |
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| 19 | if (ret == NULL)
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| 20 | return NULL;
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| 21 |
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| 22 | ret->libctx = libctx;
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| 23 | ret->haspubkey = haspubkey;
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| 24 | switch (type) {
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| 25 | case ECX_KEY_TYPE_X25519:
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| 26 | ret->keylen = X25519_KEYLEN;
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| 27 | break;
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| 28 | case ECX_KEY_TYPE_X448:
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| 29 | ret->keylen = X448_KEYLEN;
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| 30 | break;
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| 31 | case ECX_KEY_TYPE_ED25519:
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| 32 | ret->keylen = ED25519_KEYLEN;
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| 33 | break;
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| 34 | case ECX_KEY_TYPE_ED448:
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| 35 | ret->keylen = ED448_KEYLEN;
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| 36 | break;
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| 37 | }
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| 38 | ret->type = type;
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| 39 | ret->references = 1;
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| 40 |
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| 41 | if (propq != NULL) {
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| 42 | ret->propq = OPENSSL_strdup(propq);
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| 43 | if (ret->propq == NULL)
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| 44 | goto err;
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| 45 | }
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| 46 |
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| 47 | ret->lock = CRYPTO_THREAD_lock_new();
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| 48 | if (ret->lock == NULL)
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| 49 | goto err;
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| 50 | return ret;
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| 51 | err:
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| 52 | ERR_raise(ERR_LIB_EC, ERR_R_MALLOC_FAILURE);
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| 53 | OPENSSL_free(ret);
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| 54 | return NULL;
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| 55 | }
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| 56 |
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| 57 | void ossl_ecx_key_free(ECX_KEY *key)
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| 58 | {
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| 59 | int i;
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| 60 |
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| 61 | if (key == NULL)
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| 62 | return;
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| 63 |
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| 64 | CRYPTO_DOWN_REF(&key->references, &i, key->lock);
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| 65 | REF_PRINT_COUNT("ECX_KEY", key);
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| 66 | if (i > 0)
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| 67 | return;
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| 68 | REF_ASSERT_ISNT(i < 0);
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| 69 |
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| 70 | OPENSSL_free(key->propq);
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| 71 | OPENSSL_secure_clear_free(key->privkey, key->keylen);
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| 72 | CRYPTO_THREAD_lock_free(key->lock);
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| 73 | OPENSSL_free(key);
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| 74 | }
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| 75 |
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| 76 | void ossl_ecx_key_set0_libctx(ECX_KEY *key, OSSL_LIB_CTX *libctx)
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| 77 | {
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| 78 | key->libctx = libctx;
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| 79 | }
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| 80 |
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| 81 | int ossl_ecx_key_up_ref(ECX_KEY *key)
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| 82 | {
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| 83 | int i;
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| 84 |
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| 85 | if (CRYPTO_UP_REF(&key->references, &i, key->lock) <= 0)
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| 86 | return 0;
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| 87 |
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| 88 | REF_PRINT_COUNT("ECX_KEY", key);
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| 89 | REF_ASSERT_ISNT(i < 2);
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| 90 | return ((i > 1) ? 1 : 0);
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| 91 | }
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| 92 |
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| 93 | unsigned char *ossl_ecx_key_allocate_privkey(ECX_KEY *key)
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| 94 | {
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| 95 | key->privkey = OPENSSL_secure_zalloc(key->keylen);
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| 96 |
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| 97 | return key->privkey;
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| 98 | }
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