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.\" ========================================================================
.\"
.IX Title "CMS_EncryptedData_encrypt 3"
.TH CMS_EncryptedData_encrypt 3 "2023-05-07" "3.0.12" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
CMS_EncryptedData_encrypt_ex, CMS_EncryptedData_encrypt
\&\- Create CMS EncryptedData
.SH "LIBRARY"
libcrypto, -lcrypto
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/cms.h>
\&
\& CMS_ContentInfo *CMS_EncryptedData_encrypt_ex(BIO *in,
\&                                               const EVP_CIPHER *cipher,
\&                                               const unsigned char *key,
\&                                               size_t keylen,
\&                                               unsigned int flags,
\&                                               OSSL_LIB_CTX *ctx,
\&                                               const char *propq);
\&
\& CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in,
\&     const EVP_CIPHER *cipher, const unsigned char *key, size_t keylen,
\&     unsigned int flags);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBCMS_EncryptedData_encrypt_ex()\fR creates a \fBCMS_ContentInfo\fR structure
with a type \fBNID_pkcs7_encrypted\fR. \fIin\fR is a \s-1BIO\s0 containing the data to
encrypt using \fIcipher\fR and the encryption key \fIkey\fR of size \fIkeylen\fR bytes.
The library context \fIlibctx\fR and the property query \fIpropq\fR are used when
retrieving algorithms from providers. \fIflags\fR is a set of optional flags.
.PP
The \fIflags\fR field supports the options \fB\s-1CMS_DETACHED\s0\fR, \fB\s-1CMS_STREAM\s0\fR and
\&\fB\s-1CMS_PARTIAL\s0\fR. Internally \fBCMS_final()\fR is called unless \fB\s-1CMS_STREAM\s0\fR and/or
\&\fB\s-1CMS_PARTIAL\s0\fR is specified.
.PP
The algorithm passed in the \fIcipher\fR parameter must support \s-1ASN1\s0 encoding of
its parameters.
.PP
The \fBCMS_ContentInfo\fR structure can be freed using \fBCMS_ContentInfo_free\fR\|(3).
.PP
\&\fBCMS_EncryptedData_encrypt()\fR is similar to \fBCMS_EncryptedData_encrypt_ex()\fR
but uses default values of \s-1NULL\s0 for the library context \fIlibctx\fR and the
property query \fIpropq\fR.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
If the allocation fails, \fBCMS_EncryptedData_encrypt_ex()\fR and
\&\fBCMS_EncryptedData_encrypt()\fR return \s-1NULL\s0 and set an error code that can be
obtained by \fBERR_get_error\fR\|(3). Otherwise they return a pointer to the newly
allocated structure.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBERR_get_error\fR\|(3), \fBCMS_final\fR\|(3), \fBCMS_EncryptedData_decrypt\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
The \fBCMS_EncryptedData_encrypt_ex()\fR method was added in OpenSSL 3.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2020\-2021 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.