/usr/include/nss/cmsreclist.h is in libnss3-dev 2:3.26.2-0ubuntu0.12.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26  | /* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _CMSRECLIST_H
#define _CMSRECLIST_H
struct NSSCMSRecipientStr {
    int				riIndex;	/* this recipient's index in recipientInfo array */
    int				subIndex;	/* index into recipientEncryptedKeys */
						/* (only in NSSCMSKeyAgreeRecipientInfoStr) */
    enum {RLIssuerSN=0, RLSubjKeyID=1} kind;	/* for conversion recipientinfos -> recipientlist */
    union {
	CERTIssuerAndSN *	issuerAndSN;
	SECItem *		subjectKeyID;
    } id;
    /* result data (filled out for each recipient that's us) */
    CERTCertificate *		cert;
    SECKEYPrivateKey *		privkey;
    PK11SlotInfo *		slot;
};
typedef struct NSSCMSRecipientStr NSSCMSRecipient;
#endif /* _CMSRECLIST_H */
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