Signed receipt request function documentation.

doc/crypto/CMS_get1_ReceiptRequest.pod

+=pod
+
+=head1 NAME
+
+ CMS_ReceiptRequest_create0, CMS_add1_ReceiptRequest, CMS_get1_ReceiptRequest, CMS_ReceiptRequest_get0_values - CMS signed receipt request functions.
+
+=head1 SYNOPSIS
+
+ #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);
+
+=head1 DESCRIPTION
+
+CMS_ReceiptRequest_create0() creates a signed receipt request structure. The
+B<signedContentIdentifier> field is set using B<id> and B<idlen>, or it is set
+to 32 bytes of pseudo random data if B<id> is NULL. If B<receiptList> is NULL
+the allOrFirstTier option in B<receiptsFrom> is used and set to the value of
+the B<allorfirst> parameter. If B<receiptList> is not NULL the B<receiptList>
+option in B<receiptsFrom> is used. The B<receiptsTo> parameter specifies the
+B<receiptsTo> field value.
+
+The CMS_add1_ReceiptRequest() function adds a signed receipt request B<rr>
+to SignerInfo strutucre B<si>.
+
+int CMS_get1_ReceiptRequest() looks for a signed receipt request in B<si>, if
+any is found it is decoded and written to B<prr>.
+
+CMS_ReceiptRequest_get0_values() retrieves the values of a receipt request.
+The signedContentIdentifier is copied to B<pcid>. If the B<allOrFirstTier>
+option of B<receiptsFrom> is used its value is copied to B<pallorfirst>
+otherwise the B<receiptList> field is copied to B<plist>. The B<receiptsTo>
+parameter is copied to B<prto>.
+
+=head1 NOTES
+
+For more details of the meaning of the fields see RFC2634.
+
+The contents of a signed receipt should only be considered meaningful if the
+corresponding CMS_ContentInfo structure can be successfully verified using
+CMS_verify().
+
+=head1 RETURN VALUES
+
+CMS_ReceiptRequest_create0() returns a signed receipt request structure or 
+NULL if an error occurred.
+
+CMS_add1_ReceiptRequest() returns 1 for success or 0 is an error occurred.
+
+CMS_get1_ReceiptRequest() 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.
+
+=head1 SEE ALSO
+
+L<ERR_get_error(3)|ERR_get_error(3)>, L<CMS_sign(3)|CMS_sign(3)>,
+L<CMS_sign_receipt(3)|CMS_sign_receipt(3)>, L<CMS_verify(3)|CMS_verify(3)>
+L<CMS_verify_receipt(3)|CMS_verify_receipt(3)>
+
+=head1 HISTORY
+
+CMS_ReceiptRequest_create0(), CMS_add1_ReceiptRequest(), CMS_get1_ReceiptRequest() and CMS_ReceiptRequest_get0_values() were
+added to OpenSSL 0.9.8
+
+=cut

doc/crypto/CMS_sign_add1_signer.pod

@@ -40,7 +40,8 @@ The main purpose of this CMS_sign_add1_signer() is to provide finer control
 over a CMS signed data structure where the simpler CMS_sign() function defaults
 are not appropriate. For example if multiple signers or non default digest
 algorithms are needed. New attributes can also be added using the returned
-CMS_SignerInfo struture and the CMS attribute utility functions.
+CMS_SignerInfo struture and the CMS attribute utility functions or the
+CMS signed receipt request functions.
 
 Any of the following flags (ored together) can be passed in the B<flags>
 parameter.