| 1 | /*
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| 2 | * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (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 <stddef.h>
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| 11 | #include <openssl/x509.h>
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| 12 | #include <openssl/asn1.h>
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| 13 | #include <openssl/asn1t.h>
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| 14 | #include "crypto/evp.h"
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| 15 |
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| 16 | ASN1_SEQUENCE(X509_ALGOR) = {
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| 17 | ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT),
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| 18 | ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY)
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| 19 | } ASN1_SEQUENCE_END(X509_ALGOR)
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| 20 |
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| 21 | ASN1_ITEM_TEMPLATE(X509_ALGORS) =
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| 22 | ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR)
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| 23 | ASN1_ITEM_TEMPLATE_END(X509_ALGORS)
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| 24 |
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| 25 | IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR)
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| 26 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS)
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| 27 | IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR)
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| 28 |
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| 29 | int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval)
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| 30 | {
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| 31 | if (alg == NULL)
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| 32 | return 0;
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| 33 |
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| 34 | if (ptype != V_ASN1_UNDEF) {
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| 35 | if (alg->parameter == NULL)
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| 36 | alg->parameter = ASN1_TYPE_new();
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| 37 | if (alg->parameter == NULL)
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| 38 | return 0;
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| 39 | }
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| 40 |
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| 41 | ASN1_OBJECT_free(alg->algorithm);
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| 42 | alg->algorithm = aobj;
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| 43 |
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| 44 | if (ptype == 0)
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| 45 | return 1;
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| 46 | if (ptype == V_ASN1_UNDEF) {
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| 47 | ASN1_TYPE_free(alg->parameter);
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| 48 | alg->parameter = NULL;
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| 49 | } else
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| 50 | ASN1_TYPE_set(alg->parameter, ptype, pval);
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| 51 | return 1;
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| 52 | }
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| 53 |
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| 54 | void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
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| 55 | const void **ppval, const X509_ALGOR *algor)
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| 56 | {
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| 57 | if (paobj)
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| 58 | *paobj = algor->algorithm;
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| 59 | if (pptype) {
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| 60 | if (algor->parameter == NULL) {
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| 61 | *pptype = V_ASN1_UNDEF;
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| 62 | return;
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| 63 | } else
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| 64 | *pptype = algor->parameter->type;
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| 65 | if (ppval)
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| 66 | *ppval = algor->parameter->value.ptr;
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
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| 71 |
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| 72 | void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md)
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| 73 | {
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| 74 | int param_type;
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| 75 |
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| 76 | if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT)
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| 77 | param_type = V_ASN1_UNDEF;
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| 78 | else
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| 79 | param_type = V_ASN1_NULL;
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| 80 |
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| 81 | X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
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| 82 |
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| 83 | }
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| 84 |
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| 85 | int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
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| 86 | {
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| 87 | int rv;
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| 88 | rv = OBJ_cmp(a->algorithm, b->algorithm);
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| 89 | if (rv)
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| 90 | return rv;
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| 91 | if (!a->parameter && !b->parameter)
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| 92 | return 0;
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| 93 | return ASN1_TYPE_cmp(a->parameter, b->parameter);
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| 94 | }
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