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/* $OpenBSD: x509_issuer_cache.h,v 1.2 2022/09/03 17:47:47 jsing Exp $ */
/*
* Copyright (c) 2020 Bob Beck <beck@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* x509_issuer_cache */
#ifndef HEADER_X509_ISSUER_CACHE_H
#define HEADER_X509_ISSUER_CACHE_H
#include <sys/tree.h>
#include <sys/queue.h>
#include <openssl/x509.h>
__BEGIN_HIDDEN_DECLS
struct x509_issuer {
RB_ENTRY(x509_issuer) entry;
TAILQ_ENTRY(x509_issuer) queue; /* LRU of entries */
/* parent_md and child_md must point to EVP_MAX_MD_SIZE of memory */
unsigned char *parent_md;
unsigned char *child_md;
int valid; /* Result of signature validation. */
};
#define X509_ISSUER_CACHE_MAX 40000 /* Approx 7.5 MB, entries 200 bytes */
int x509_issuer_cache_set_max(size_t max);
int x509_issuer_cache_find(unsigned char *parent_md, unsigned char *child_md);
void x509_issuer_cache_add(unsigned char *parent_md, unsigned char *child_md,
int valid);
void x509_issuer_cache_free();
__END_HIDDEN_DECLS
#endif
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