1 | /* |
2 | * Copyright 1998-2016 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 <stddef.h> |
11 | #include <openssl/x509.h> |
12 | #include <openssl/asn1.h> |
13 | #include <openssl/asn1t.h> |
14 | #include "crypto/evp.h" |
15 | |
16 | ASN1_SEQUENCE(X509_ALGOR) = { |
17 | ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT), |
18 | ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY) |
19 | } ASN1_SEQUENCE_END(X509_ALGOR) |
20 | |
21 | ASN1_ITEM_TEMPLATE(X509_ALGORS) = |
22 | ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR) |
23 | ASN1_ITEM_TEMPLATE_END(X509_ALGORS) |
24 | |
25 | IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR) |
26 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS) |
27 | IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR) |
28 | |
29 | int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval) |
30 | { |
31 | if (alg == NULL) |
32 | return 0; |
33 | |
34 | if (ptype != V_ASN1_UNDEF) { |
35 | if (alg->parameter == NULL) |
36 | alg->parameter = ASN1_TYPE_new(); |
37 | if (alg->parameter == NULL) |
38 | return 0; |
39 | } |
40 | |
41 | ASN1_OBJECT_free(alg->algorithm); |
42 | alg->algorithm = aobj; |
43 | |
44 | if (ptype == 0) |
45 | return 1; |
46 | if (ptype == V_ASN1_UNDEF) { |
47 | ASN1_TYPE_free(alg->parameter); |
48 | alg->parameter = NULL; |
49 | } else |
50 | ASN1_TYPE_set(alg->parameter, ptype, pval); |
51 | return 1; |
52 | } |
53 | |
54 | void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype, |
55 | const void **ppval, const X509_ALGOR *algor) |
56 | { |
57 | if (paobj) |
58 | *paobj = algor->algorithm; |
59 | if (pptype) { |
60 | if (algor->parameter == NULL) { |
61 | *pptype = V_ASN1_UNDEF; |
62 | return; |
63 | } else |
64 | *pptype = algor->parameter->type; |
65 | if (ppval) |
66 | *ppval = algor->parameter->value.ptr; |
67 | } |
68 | } |
69 | |
70 | /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */ |
71 | |
72 | void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md) |
73 | { |
74 | int param_type; |
75 | |
76 | if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT) |
77 | param_type = V_ASN1_UNDEF; |
78 | else |
79 | param_type = V_ASN1_NULL; |
80 | |
81 | X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL); |
82 | |
83 | } |
84 | |
85 | int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b) |
86 | { |
87 | int rv; |
88 | rv = OBJ_cmp(a->algorithm, b->algorithm); |
89 | if (rv) |
90 | return rv; |
91 | if (!a->parameter && !b->parameter) |
92 | return 0; |
93 | return ASN1_TYPE_cmp(a->parameter, b->parameter); |
94 | } |
95 | |