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CMS_ReceiptRequest_create0, CMS_add1_ReceiptRequest, CMS_get1_ReceiptRequest, CMS_ReceiptRequest_get0_valuesCMS signed receipt request functions

#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);

CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr);

CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr);

CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr, ASN1_STRING **pcid, int *pallorfirst, STACK_OF(GENERAL_NAMES) **plist, STACK_OF(GENERAL_NAMES) **prto);

() creates a new ReceiptRequest structure. The signedContentIdentifier field is set using id and idlen, or it is set to 32 bytes of pseudo random data if id is NULL. If receiptList is NULL, the allOrFirstTier option in the receiptsFrom field is set to the value of the allorfirst argument. If receiptList is not NULL, the receiptList option in the receiptsFrom field is used. The receiptsTo argument specifies the value of the receiptsTo field.

() adds a BER-encoded copy of rr to si.

() looks for a signed receipt request in si. If any is found, it is decoded and written to prr.

() retrieves the values of a receipt request. The signedContentIdentifier is copied to pcid. If the allOrFirstTier option is used in the receiptsFrom field, its value is copied to pallorfirst; otherwise the receiptList field is copied to plist. The receiptsTo field is copied to prto.

The contents of a signed receipt should only be considered meaningful if the corresponding CMS_ContentInfo structure can be successfully verified using CMS_verify(3).

CMS_ReceiptRequest_create0() returns the new signed receipt request structure or NULL if an error occurred.

CMS_add1_ReceiptRequest() returns 1 for success or 0 if 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 or -1 if it is present but malformed.

CMS_ContentInfo_new(3), CMS_sign(3), CMS_sign_receipt(3), CMS_verify(3), CMS_verify_receipt(3), ERR_get_error(3)

RFC 2634: Enhanced Security Services for S/MIME, section 2.7: Receipt Request Syntax

CMS_ReceiptRequest_create0(), CMS_add1_ReceiptRequest(), CMS_get1_ReceiptRequest(), and CMS_ReceiptRequest_get0_values() first appeared in OpenSSL 0.9.8h and have been available since OpenBSD 6.7.

November 2, 2019 OpenBSD-current