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.\" ========================================================================
.\"
.IX Title "CMS_GET1_RECEIPTREQUEST 3"
.TH CMS_GET1_RECEIPTREQUEST 3 "2020-03-02" "3.0.0-dev" "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_ReceiptRequest_create0, CMS_add1_ReceiptRequest, CMS_get1_ReceiptRequest, CMS_ReceiptRequest_get0_values \- CMS signed receipt request functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/cms.h>
\&
\& CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
\&                                                int allorfirst,
\&                                                STACK_OF(GENERAL_NAMES) *receiptList,
\&                                                STACK_OF(GENERAL_NAMES) *receiptsTo);
\& int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr);
\& int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr);
\& void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr, ASN1_STRING **pcid,
\&                                     int *pallorfirst,
\&                                     STACK_OF(GENERAL_NAMES) **plist,
\&                                     STACK_OF(GENERAL_NAMES) **prto);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fICMS_ReceiptRequest_create0()\fR creates a signed receipt request structure. The
\&\fBsignedContentIdentifier\fR field is set using \fBid\fR and \fBidlen\fR, or it is set
to 32 bytes of pseudo random data if \fBid\fR is \s-1NULL\s0. If \fBreceiptList\fR is \s-1NULL\s0
the allOrFirstTier option in \fBreceiptsFrom\fR is used and set to the value of
the \fBallorfirst\fR parameter. If \fBreceiptList\fR is not \s-1NULL\s0 the \fBreceiptList\fR
option in \fBreceiptsFrom\fR is used. The \fBreceiptsTo\fR parameter specifies the
\&\fBreceiptsTo\fR field value.
.PP
The \fICMS_add1_ReceiptRequest()\fR function adds a signed receipt request \fBrr\fR
to SignerInfo structure \fBsi\fR.
.PP
int \fICMS_get1_ReceiptRequest()\fR looks for a signed receipt request in \fBsi\fR, if
any is found it is decoded and written to \fBprr\fR.
.PP
\&\fICMS_ReceiptRequest_get0_values()\fR retrieves the values of a receipt request.
The signedContentIdentifier is copied to \fBpcid\fR. If the \fBallOrFirstTier\fR
option of \fBreceiptsFrom\fR is used its value is copied to \fBpallorfirst\fR
otherwise the \fBreceiptList\fR field is copied to \fBplist\fR. The \fBreceiptsTo\fR
parameter is copied to \fBprto\fR.
.SH "NOTES"
.IX Header "NOTES"
For more details of the meaning of the fields see \s-1RFC2634\s0.
.PP
The contents of a signed receipt should only be considered meaningful if the
corresponding CMS_ContentInfo structure can be successfully verified using
\&\fICMS_verify()\fR.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fICMS_ReceiptRequest_create0()\fR returns a signed receipt request structure or
\&\s-1NULL\s0 if an error occurred.
.PP
\&\fICMS_add1_ReceiptRequest()\fR returns 1 for success or 0 if an error occurred.
.PP
\&\fICMS_get1_ReceiptRequest()\fR returns 1 is a signed receipt request is found and
decoded. It returns 0 if a signed receipt request is not present and \-1 if
it is present but malformed.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIERR_get_error\fR\|(3), \fICMS_sign\fR\|(3),
\&\fICMS_sign_receipt\fR\|(3), \fICMS_verify\fR\|(3)
\&\fICMS_verify_receipt\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2008\-2018 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>.