1 /*
2 * Copyright 1995-2021 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 /* We need to use some engine deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
12
13 #include <stdio.h>
14 #include <time.h>
15 #include <sys/types.h>
16
17 #include "internal/cryptlib.h"
18
19 #include <openssl/engine.h>
20 #include <openssl/err.h>
21 #include <openssl/evp.h>
22 #include <openssl/buffer.h>
23 #include <openssl/x509.h>
24 #include "crypto/x509.h"
25
26 #ifndef OPENSSL_NO_DEPRECATED_3_0
27
ASN1_digest(i2d_of_void * i2d,const EVP_MD * type,char * data,unsigned char * md,unsigned int * len)28 int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,
29 unsigned char *md, unsigned int *len)
30 {
31 int inl;
32 unsigned char *str, *p;
33
34 inl = i2d(data, NULL);
35 if (inl <= 0) {
36 ERR_raise(ERR_LIB_ASN1, ERR_R_INTERNAL_ERROR);
37 return 0;
38 }
39 if ((str = OPENSSL_malloc(inl)) == NULL) {
40 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
41 return 0;
42 }
43 p = str;
44 i2d(data, &p);
45
46 if (!EVP_Digest(str, inl, md, len, type, NULL)) {
47 OPENSSL_free(str);
48 return 0;
49 }
50 OPENSSL_free(str);
51 return 1;
52 }
53
54 #endif
55
ossl_asn1_item_digest_ex(const ASN1_ITEM * it,const EVP_MD * md,void * asn,unsigned char * data,unsigned int * len,OSSL_LIB_CTX * libctx,const char * propq)56 int ossl_asn1_item_digest_ex(const ASN1_ITEM *it, const EVP_MD *md, void *asn,
57 unsigned char *data, unsigned int *len,
58 OSSL_LIB_CTX *libctx, const char *propq)
59 {
60 int i, ret = 0;
61 unsigned char *str = NULL;
62 EVP_MD *fetched_md = (EVP_MD *)md;
63
64 i = ASN1_item_i2d(asn, &str, it);
65 if (i < 0 || str == NULL)
66 return 0;
67
68 if (EVP_MD_get0_provider(md) == NULL) {
69 #if !defined(OPENSSL_NO_ENGINE)
70 ENGINE *tmpeng = ENGINE_get_digest_engine(EVP_MD_get_type(md));
71
72 if (tmpeng != NULL)
73 ENGINE_finish(tmpeng);
74 else
75 #endif
76 fetched_md = EVP_MD_fetch(libctx, EVP_MD_get0_name(md), propq);
77 }
78 if (fetched_md == NULL)
79 goto err;
80
81 ret = EVP_Digest(str, i, data, len, fetched_md, NULL);
82 err:
83 OPENSSL_free(str);
84 if (fetched_md != md)
85 EVP_MD_free(fetched_md);
86 return ret;
87 }
88
ASN1_item_digest(const ASN1_ITEM * it,const EVP_MD * md,void * asn,unsigned char * data,unsigned int * len)89 int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *md, void *asn,
90 unsigned char *data, unsigned int *len)
91 {
92 return ossl_asn1_item_digest_ex(it, md, asn, data, len, NULL, NULL);
93 }
94
95