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CMS_ENVELOPEDDATA_CREATE(3ossl) OpenSSL CMS_ENVELOPEDDATA_CREATE(3ossl)
NAME
CMS_EnvelopedData_create_ex, CMS_EnvelopedData_create,
CMS_AuthEnvelopedData_create, CMS_AuthEnvelopedData_create_ex - Create
CMS envelope
SYNOPSIS
#include <openssl/cms.h>
CMS_ContentInfo *
CMS_EnvelopedData_create_ex(const EVP_CIPHER *cipher, OSSL_LIB_CTX *libctx,
const char *propq);
CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher);
CMS_ContentInfo *
CMS_AuthEnvelopedData_create_ex(const EVP_CIPHER *cipher, OSSL_LIB_CTX *libctx,
const char *propq);
CMS_ContentInfo *CMS_AuthEnvelopedData_create(const EVP_CIPHER *cipher);
DESCRIPTION
CMS_EnvelopedData_create_ex() creates a CMS_ContentInfo structure with
a type NID_pkcs7_enveloped. cipher is the symmetric cipher to use. The
library context libctx and the property query propq are used when
retrieving algorithms from providers.
CMS_AuthEnvelopedData_create_ex() creates a CMS_ContentInfo structure
with a type NID_id_smime_ct_authEnvelopedData. cipher is the symmetric
AEAD cipher to use. Currently only AES variants with GCM mode are
supported. The library context libctx and the property query propq are
used when retrieving algorithms from providers.
The algorithm passed in the cipher parameter must support ASN1 encoding
of its parameters.
The recipients can be added later using CMS_add1_recipient_cert(3) or
CMS_add0_recipient_key(3).
The CMS_ContentInfo structure needs to be finalized using CMS_final(3)
and then freed using CMS_ContentInfo_free(3).
CMS_EnvelopedData_create() and CMS_AuthEnvelopedData_create are
similar to CMS_EnvelopedData_create_ex() and
CMS_AuthEnvelopedData_create_ex() but use default values of NULL for
the library context libctx and the property query propq.
NOTES
Although CMS_EnvelopedData_create() and CMS_AuthEnvelopedData_create()
allocate a new CMS_ContentInfo structure, they are not usually used in
applications. The wrappers CMS_encrypt(3) and CMS_decrypt(3) are often
used instead.
RETURN VALUES
If the allocation fails, CMS_EnvelopedData_create() and
CMS_AuthEnvelopedData_create() return NULL and set an error code that
can be obtained by ERR_get_error(3). Otherwise they return a pointer to
the newly allocated structure.
Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
3.0.11 2023-09-19 CMS_ENVELOPEDDATA_CREATE(3ossl)