1CMS_ENVELOPEDDATA_CREATE(3ossl)     OpenSSL    CMS_ENVELOPEDDATA_CREATE(3ossl)
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NAME

6       CMS_EnvelopedData_create_ex, CMS_EnvelopedData_create,
7       CMS_AuthEnvelopedData_create, CMS_AuthEnvelopedData_create_ex - Create
8       CMS envelope
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SYNOPSIS

11        #include <openssl/cms.h>
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13        CMS_ContentInfo *
14        CMS_EnvelopedData_create_ex(const EVP_CIPHER *cipher, OSSL_LIB_CTX *libctx,
15                                    const char *propq);
16        CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher);
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18        CMS_ContentInfo *
19        CMS_AuthEnvelopedData_create_ex(const EVP_CIPHER *cipher, OSSL_LIB_CTX *libctx,
20                                        const char *propq);
21        CMS_ContentInfo *CMS_AuthEnvelopedData_create(const EVP_CIPHER *cipher);
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DESCRIPTION

24       CMS_EnvelopedData_create_ex() creates a CMS_ContentInfo structure with
25       a type NID_pkcs7_enveloped. cipher is the symmetric cipher to use.  The
26       library context libctx and the property query propq are used when
27       retrieving algorithms from providers.
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29       CMS_AuthEnvelopedData_create_ex() creates a CMS_ContentInfo structure
30       with a type NID_id_smime_ct_authEnvelopedData. cipher is the symmetric
31       AEAD cipher to use. Currently only AES variants with GCM mode are
32       supported. The library context libctx and the property query propq are
33       used when retrieving algorithms from providers.
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35       The algorithm passed in the cipher parameter must support ASN1 encoding
36       of its parameters.
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38       The recipients can be added later using CMS_add1_recipient_cert(3) or
39       CMS_add0_recipient_key(3).
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41       The CMS_ContentInfo structure needs to be finalized using CMS_final(3)
42       and then freed using CMS_ContentInfo_free(3).
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44       CMS_EnvelopedData_create() and  CMS_AuthEnvelopedData_create are
45       similar to CMS_EnvelopedData_create_ex() and
46       CMS_AuthEnvelopedData_create_ex() but use default values of NULL for
47       the library context libctx and the property query propq.
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NOTES

50       Although CMS_EnvelopedData_create() and CMS_AuthEnvelopedData_create()
51       allocate a new CMS_ContentInfo structure, they are not usually used in
52       applications.  The wrappers CMS_encrypt(3) and CMS_decrypt(3) are often
53       used instead.
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RETURN VALUES

56       If the allocation fails, CMS_EnvelopedData_create() and
57       CMS_AuthEnvelopedData_create() return NULL and set an error code that
58       can be obtained by ERR_get_error(3). Otherwise they return a pointer to
59       the newly allocated structure.
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SEE ALSO

62       ERR_get_error(3), CMS_encrypt(3), CMS_decrypt(3), CMS_final(3)
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HISTORY

65       The CMS_EnvelopedData_create_ex() method was added in OpenSSL 3.0.
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68       Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
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70       Licensed under the Apache License 2.0 (the "License").  You may not use
71       this file except in compliance with the License.  You can obtain a copy
72       in the file LICENSE in the source distribution or at
73       <https://www.openssl.org/source/license.html>.
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773.0.5                             2022-07-05   CMS_ENVELOPEDDATA_CREATE(3ossl)
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