1e71b7053SJung-uk Kim /*
2b077aed3SPierre Pronchery * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
374664626SKris Kennaway *
4b077aed3SPierre Pronchery * Licensed under the Apache License 2.0 (the "License"). You may not use
5e71b7053SJung-uk Kim * this file except in compliance with the License. You can obtain a copy
6e71b7053SJung-uk Kim * in the file LICENSE in the source distribution or at
7e71b7053SJung-uk Kim * https://www.openssl.org/source/license.html
874664626SKris Kennaway */
974664626SKris Kennaway
1074664626SKris Kennaway #include <stdio.h>
11e71b7053SJung-uk Kim #include "internal/cryptlib.h"
1274664626SKris Kennaway #include <openssl/asn1.h>
13e71b7053SJung-uk Kim #include <openssl/asn1t.h>
14b077aed3SPierre Pronchery #include "crypto/asn1.h"
1574664626SKris Kennaway
ASN1_TYPE_set_octetstring(ASN1_TYPE * a,unsigned char * data,int len)1674664626SKris Kennaway int ASN1_TYPE_set_octetstring(ASN1_TYPE *a, unsigned char *data, int len)
1774664626SKris Kennaway {
1874664626SKris Kennaway ASN1_STRING *os;
1974664626SKris Kennaway
20e71b7053SJung-uk Kim if ((os = ASN1_OCTET_STRING_new()) == NULL)
21e71b7053SJung-uk Kim return 0;
22e71b7053SJung-uk Kim if (!ASN1_OCTET_STRING_set(os, data, len)) {
23e71b7053SJung-uk Kim ASN1_OCTET_STRING_free(os);
24a93cbc2bSJung-uk Kim return 0;
25a93cbc2bSJung-uk Kim }
2674664626SKris Kennaway ASN1_TYPE_set(a, V_ASN1_OCTET_STRING, os);
27e71b7053SJung-uk Kim return 1;
2874664626SKris Kennaway }
2974664626SKris Kennaway
30b077aed3SPierre Pronchery /* int max_len: for returned value
31b077aed3SPierre Pronchery * if passing NULL in data, nothing is copied but the necessary length
32b077aed3SPierre Pronchery * for it is returned.
33b077aed3SPierre Pronchery */
ASN1_TYPE_get_octetstring(const ASN1_TYPE * a,unsigned char * data,int max_len)34e71b7053SJung-uk Kim int ASN1_TYPE_get_octetstring(const ASN1_TYPE *a, unsigned char *data, int max_len)
3574664626SKris Kennaway {
3674664626SKris Kennaway int ret, num;
37e71b7053SJung-uk Kim const unsigned char *p;
3874664626SKris Kennaway
396f9291ceSJung-uk Kim if ((a->type != V_ASN1_OCTET_STRING) || (a->value.octet_string == NULL)) {
40b077aed3SPierre Pronchery ERR_raise(ERR_LIB_ASN1, ASN1_R_DATA_IS_WRONG);
41e71b7053SJung-uk Kim return -1;
4274664626SKris Kennaway }
43e71b7053SJung-uk Kim p = ASN1_STRING_get0_data(a->value.octet_string);
44e71b7053SJung-uk Kim ret = ASN1_STRING_length(a->value.octet_string);
4574664626SKris Kennaway if (ret < max_len)
4674664626SKris Kennaway num = ret;
4774664626SKris Kennaway else
4874664626SKris Kennaway num = max_len;
49b077aed3SPierre Pronchery if (num > 0 && data != NULL)
5074664626SKris Kennaway memcpy(data, p, num);
51e71b7053SJung-uk Kim return ret;
5274664626SKris Kennaway }
5374664626SKris Kennaway
asn1_type_init_oct(ASN1_OCTET_STRING * oct,unsigned char * data,int len)54b077aed3SPierre Pronchery static ossl_inline void asn1_type_init_oct(ASN1_OCTET_STRING *oct,
55b077aed3SPierre Pronchery unsigned char *data, int len)
56b077aed3SPierre Pronchery {
57b077aed3SPierre Pronchery oct->data = data;
58b077aed3SPierre Pronchery oct->type = V_ASN1_OCTET_STRING;
59b077aed3SPierre Pronchery oct->length = len;
60b077aed3SPierre Pronchery oct->flags = 0;
61b077aed3SPierre Pronchery }
62b077aed3SPierre Pronchery
asn1_type_get_int_oct(ASN1_OCTET_STRING * oct,int32_t anum,long * num,unsigned char * data,int max_len)63b077aed3SPierre Pronchery static int asn1_type_get_int_oct(ASN1_OCTET_STRING *oct, int32_t anum,
64b077aed3SPierre Pronchery long *num, unsigned char *data, int max_len)
65b077aed3SPierre Pronchery {
66b077aed3SPierre Pronchery int ret = ASN1_STRING_length(oct), n;
67b077aed3SPierre Pronchery
68b077aed3SPierre Pronchery if (num != NULL)
69b077aed3SPierre Pronchery *num = anum;
70b077aed3SPierre Pronchery
71b077aed3SPierre Pronchery if (max_len > ret)
72b077aed3SPierre Pronchery n = ret;
73b077aed3SPierre Pronchery else
74b077aed3SPierre Pronchery n = max_len;
75b077aed3SPierre Pronchery
76b077aed3SPierre Pronchery if (data != NULL)
77b077aed3SPierre Pronchery memcpy(data, ASN1_STRING_get0_data(oct), n);
78b077aed3SPierre Pronchery
79b077aed3SPierre Pronchery return ret;
80b077aed3SPierre Pronchery }
81b077aed3SPierre Pronchery
82e71b7053SJung-uk Kim typedef struct {
83e71b7053SJung-uk Kim int32_t num;
84e71b7053SJung-uk Kim ASN1_OCTET_STRING *oct;
85e71b7053SJung-uk Kim } asn1_int_oct;
86e71b7053SJung-uk Kim
87e71b7053SJung-uk Kim ASN1_SEQUENCE(asn1_int_oct) = {
88e71b7053SJung-uk Kim ASN1_EMBED(asn1_int_oct, num, INT32),
89e71b7053SJung-uk Kim ASN1_SIMPLE(asn1_int_oct, oct, ASN1_OCTET_STRING)
90e71b7053SJung-uk Kim } static_ASN1_SEQUENCE_END(asn1_int_oct)
91e71b7053SJung-uk Kim
92e71b7053SJung-uk Kim DECLARE_ASN1_ITEM(asn1_int_oct)
93e71b7053SJung-uk Kim
9474664626SKris Kennaway int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num, unsigned char *data,
9574664626SKris Kennaway int len)
9674664626SKris Kennaway {
97e71b7053SJung-uk Kim asn1_int_oct atmp;
98e71b7053SJung-uk Kim ASN1_OCTET_STRING oct;
9974664626SKris Kennaway
100e71b7053SJung-uk Kim atmp.num = num;
101e71b7053SJung-uk Kim atmp.oct = &oct;
102b077aed3SPierre Pronchery asn1_type_init_oct(&oct, data, len);
10374664626SKris Kennaway
104e71b7053SJung-uk Kim if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(asn1_int_oct), &atmp, &a))
105e71b7053SJung-uk Kim return 1;
106e71b7053SJung-uk Kim return 0;
10774664626SKris Kennaway }
10874664626SKris Kennaway
ASN1_TYPE_get_int_octetstring(const ASN1_TYPE * a,long * num,unsigned char * data,int max_len)109e71b7053SJung-uk Kim int ASN1_TYPE_get_int_octetstring(const ASN1_TYPE *a, long *num,
1106f9291ceSJung-uk Kim unsigned char *data, int max_len)
11174664626SKris Kennaway {
112e71b7053SJung-uk Kim asn1_int_oct *atmp = NULL;
113b077aed3SPierre Pronchery int ret = -1;
11474664626SKris Kennaway
1156f9291ceSJung-uk Kim if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL)) {
11674664626SKris Kennaway goto err;
11774664626SKris Kennaway }
11874664626SKris Kennaway
119e71b7053SJung-uk Kim atmp = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(asn1_int_oct), a);
12074664626SKris Kennaway
121e71b7053SJung-uk Kim if (atmp == NULL)
1226f9291ceSJung-uk Kim goto err;
12374664626SKris Kennaway
124b077aed3SPierre Pronchery ret = asn1_type_get_int_oct(atmp->oct, atmp->num, num, data, max_len);
12574664626SKris Kennaway
126e71b7053SJung-uk Kim if (ret == -1) {
12774664626SKris Kennaway err:
128b077aed3SPierre Pronchery ERR_raise(ERR_LIB_ASN1, ASN1_R_DATA_IS_WRONG);
12974664626SKris Kennaway }
130e71b7053SJung-uk Kim M_ASN1_free_of(atmp, asn1_int_oct);
131e71b7053SJung-uk Kim return ret;
13274664626SKris Kennaway }
133b077aed3SPierre Pronchery
134b077aed3SPierre Pronchery typedef struct {
135b077aed3SPierre Pronchery ASN1_OCTET_STRING *oct;
136b077aed3SPierre Pronchery int32_t num;
137b077aed3SPierre Pronchery } asn1_oct_int;
138b077aed3SPierre Pronchery
139b077aed3SPierre Pronchery /*
140b077aed3SPierre Pronchery * Defined in RFC 5084 -
141b077aed3SPierre Pronchery * Section 2. "Content-Authenticated Encryption Algorithms"
142b077aed3SPierre Pronchery */
143b077aed3SPierre Pronchery ASN1_SEQUENCE(asn1_oct_int) = {
144b077aed3SPierre Pronchery ASN1_SIMPLE(asn1_oct_int, oct, ASN1_OCTET_STRING),
145b077aed3SPierre Pronchery ASN1_EMBED(asn1_oct_int, num, INT32)
146b077aed3SPierre Pronchery } static_ASN1_SEQUENCE_END(asn1_oct_int)
147b077aed3SPierre Pronchery
148b077aed3SPierre Pronchery DECLARE_ASN1_ITEM(asn1_oct_int)
149b077aed3SPierre Pronchery
150b077aed3SPierre Pronchery int ossl_asn1_type_set_octetstring_int(ASN1_TYPE *a, long num,
151b077aed3SPierre Pronchery unsigned char *data, int len)
152b077aed3SPierre Pronchery {
153b077aed3SPierre Pronchery asn1_oct_int atmp;
154b077aed3SPierre Pronchery ASN1_OCTET_STRING oct;
155b077aed3SPierre Pronchery
156b077aed3SPierre Pronchery atmp.num = num;
157b077aed3SPierre Pronchery atmp.oct = &oct;
158b077aed3SPierre Pronchery asn1_type_init_oct(&oct, data, len);
159b077aed3SPierre Pronchery
160b077aed3SPierre Pronchery if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(asn1_oct_int), &atmp, &a))
161b077aed3SPierre Pronchery return 1;
162b077aed3SPierre Pronchery return 0;
163b077aed3SPierre Pronchery }
164b077aed3SPierre Pronchery
ossl_asn1_type_get_octetstring_int(const ASN1_TYPE * a,long * num,unsigned char * data,int max_len)165b077aed3SPierre Pronchery int ossl_asn1_type_get_octetstring_int(const ASN1_TYPE *a, long *num,
166b077aed3SPierre Pronchery unsigned char *data, int max_len)
167b077aed3SPierre Pronchery {
168b077aed3SPierre Pronchery asn1_oct_int *atmp = NULL;
169b077aed3SPierre Pronchery int ret = -1;
170b077aed3SPierre Pronchery
171b077aed3SPierre Pronchery if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL))
172b077aed3SPierre Pronchery goto err;
173b077aed3SPierre Pronchery
174b077aed3SPierre Pronchery atmp = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(asn1_oct_int), a);
175b077aed3SPierre Pronchery
176b077aed3SPierre Pronchery if (atmp == NULL)
177b077aed3SPierre Pronchery goto err;
178b077aed3SPierre Pronchery
179b077aed3SPierre Pronchery ret = asn1_type_get_int_oct(atmp->oct, atmp->num, num, data, max_len);
180b077aed3SPierre Pronchery
181b077aed3SPierre Pronchery if (ret == -1) {
182b077aed3SPierre Pronchery err:
183b077aed3SPierre Pronchery ERR_raise(ERR_LIB_ASN1, ASN1_R_DATA_IS_WRONG);
184b077aed3SPierre Pronchery }
185b077aed3SPierre Pronchery M_ASN1_free_of(atmp, asn1_oct_int);
186b077aed3SPierre Pronchery return ret;
187b077aed3SPierre Pronchery }
188