.\" $OpenBSD: CMS_ContentInfo_new.3,v 1.3 2019/11/02 15:39:46 schwarze Exp $
.\" Copyright (c) 2019 Ingo Schwarze <schwarze@openbsd.org>
.\"
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.Dd $Mdocdate: November 2 2019 $
.Dt CMS_CONTENTINFO_NEW 3
.Os
.Sh NAME
.Nm CMS_ContentInfo_new ,
.Nm CMS_ContentInfo_free ,
.Nm CMS_ContentInfo_print_ctx ,
.Nm CMS_ReceiptRequest_new ,
.Nm CMS_ReceiptRequest_free
.Nd Cryptographic Message Syntax data structures
.Sh SYNOPSIS
.In openssl/cms.h
.Ft CMS_ContentInfo *
.Fn CMS_ContentInfo_new void
.Ft void
.Fn CMS_ContentInfo_free "CMS_ContentInfo *cms"
.Ft int
.Fo CMS_ContentInfo_print_ctx
.Fa "BIO *out"
.Fa "CMS_ContentInfo *cms"
.Fa "int indent"
.Fa "const ASN1_PCTX *pctx"
.Fc
.Ft CMS_ReceiptRequest *
.Fn CMS_ReceiptRequest_new void
.Ft void
.Fn CMS_ReceiptRequest_free "CMS_ReceiptRequest *rr"
.Sh DESCRIPTION
.Fn CMS_ContentInfo_new
allocates and initializes an empty
.Vt CMS_ContentInfo
object, representing an ASN.1
.Vt ContentInfo
structure defined in RFC 5652 section 3.
It can hold a pointer to an ASN.1 OBJECT IDENTIFIER
and a pointer to either a
.Vt SignedData ,
.Vt EnvelopedData ,
.Vt DigestedData ,
.Vt EncryptedData ,
.Vt AuthenticatedData ,
or
.Vt CompressedData
object or to an arbitrary ASN.1 object.
.Fn CMS_ContentInfo_free
frees
.Fa cms .
.Pp
.Fn CMS_ContentInfo_print_ctx
prints a human readable representation of
.Fa cms
to
.Fa out .
.Pp
.Fn CMS_ReceiptRequest_new
allocates and initializes an empty
.Vt CMS_ReceiptRequest
object, representing an ASN.1
.Vt ReceiptRequest
structure defined in RFC 2634 section 2.7.
It can contain a content identifier, a list of recipients requested
to return a signed receipt, and a list of users to send the receipt to.
.Fn CMS_ReceiptRequest_free
frees
.Fa rr .
.Sh RETURN VALUES
.Fn CMS_ContentInfo_new
and
.Fn CMS_ReceiptRequest_new
return the new
.Vt CMS_ContentInfo
or
.Vt CMS_ReceiptRequest
object, respectively, or
.Dv NULL
if an error occurs.
.Sh SEE ALSO
.Xr BIO_new_CMS 3 ,
.Xr CMS_add0_cert 3 ,
.Xr CMS_add1_recipient_cert 3 ,
.Xr CMS_add1_signer 3 ,
.Xr CMS_compress 3 ,
.Xr CMS_decrypt 3 ,
.Xr CMS_encrypt 3 ,
.Xr CMS_final 3 ,
.Xr CMS_get0_RecipientInfos 3 ,
.Xr CMS_get0_SignerInfos 3 ,
.Xr CMS_get0_type 3 ,
.Xr CMS_get1_ReceiptRequest 3 ,
.Xr CMS_sign 3 ,
.Xr CMS_sign_receipt 3 ,
.Xr CMS_uncompress 3 ,
.Xr CMS_verify 3 ,
.Xr CMS_verify_receipt 3 ,
.Xr crypto 3 ,
.Xr d2i_CMS_ContentInfo 3 ,
.Xr i2d_CMS_bio_stream 3 ,
.Xr PEM_read_bio_PrivateKey 3 ,
.Xr PEM_write_bio_CMS_stream 3 ,
.Xr SMIME_read_CMS 3 ,
.Xr SMIME_write_CMS 3
.Sh STANDARDS
RFC 5652: Cryptographic Message Syntax, section 3: General Syntax
.Pp
RFC 3274: Compressed Data Content Type for Cryptographic Message Syntax (CMS)
.Pp
RFC 2634: Enhanced Security Services for S/MIME,
section 2.7: Receipt Request Syntax
.Sh HISTORY
.Fn CMS_ContentInfo_new ,
.Fn CMS_ContentInfo_free ,
.Fn CMS_ReceiptRequest_new ,
and
.Fn CMS_ReceiptRequest_free
first appeared in OpenSSL 0.9.8h and
.Fn CMS_ContentInfo_print_ctx
in OpenSSL 1.0.0.
This functions have been available since
.Ox 6.7 .