5 CMS_digest_create_ex, CMS_digest_create
6 - Create CMS DigestedData object
10 #include <openssl/cms.h>
12 CMS_ContentInfo *CMS_digest_create_ex(BIO *in, const EVP_MD *md,
13 unsigned int flags, OSSL_LIB_CTX *ctx,
16 CMS_ContentInfo *CMS_digest_create(BIO *in, const EVP_MD *md,
21 CMS_digest_create_ex() creates a B<CMS_ContentInfo> structure
22 with a type B<NID_pkcs7_digest>. The data supplied via the I<in> BIO is digested
23 using I<md>. The library context I<libctx> and the property query I<propq> are
24 used when retrieving algorithms from providers.
25 The I<flags> field supports the B<CMS_DETACHED> and B<CMS_STREAM> flags,
26 Internally CMS_final() is called unless B<CMS_STREAM> is specified.
28 The B<CMS_ContentInfo> structure can be freed using L<CMS_ContentInfo_free(3)>.
30 CMS_digest_create() is similar to CMS_digest_create_ex()
31 but uses default values of NULL for the library context I<libctx> and the
32 property query I<propq>.
37 If the allocation fails, CMS_digest_create_ex() and CMS_digest_create()
38 return NULL and set an error code that can be obtained by L<ERR_get_error(3)>.
39 Otherwise they return a pointer to the newly allocated structure.
43 L<ERR_get_error(3)>, L<CMS_final(3)>>
47 The CMS_digest_create_ex() method was added in OpenSSL 3.0.
51 Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
53 Licensed under the Apache License 2.0 (the "License"). You may not use
54 this file except in compliance with the License. You can obtain a copy
55 in the file LICENSE in the source distribution or at
56 L<https://www.openssl.org/source/license.html>.