dane.h
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/*
* Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef HEADER_INTERNAL_DANE_H
#define HEADER_INTERNAL_DANE_H
#include <openssl/safestack.h>
/*-
* Certificate usages:
* https://tools.ietf.org/html/rfc6698#section-2.1.1
*/
#define DANETLS_USAGE_PKIX_TA 0
#define DANETLS_USAGE_PKIX_EE 1
#define DANETLS_USAGE_DANE_TA 2
#define DANETLS_USAGE_DANE_EE 3
#define DANETLS_USAGE_LAST DANETLS_USAGE_DANE_EE
/*-
* Selectors:
* https://tools.ietf.org/html/rfc6698#section-2.1.2
*/
#define DANETLS_SELECTOR_CERT 0
#define DANETLS_SELECTOR_SPKI 1
#define DANETLS_SELECTOR_LAST DANETLS_SELECTOR_SPKI
/*-
* Matching types:
* https://tools.ietf.org/html/rfc6698#section-2.1.3
*/
#define DANETLS_MATCHING_FULL 0
#define DANETLS_MATCHING_2256 1
#define DANETLS_MATCHING_2512 2
#define DANETLS_MATCHING_LAST DANETLS_MATCHING_2512
typedef struct danetls_record_st {
uint8_t usage;
uint8_t selector;
uint8_t mtype;
unsigned char *data;
size_t dlen;
EVP_PKEY *spki;
} danetls_record;
DEFINE_STACK_OF(danetls_record)
/*
* Shared DANE context
*/
struct dane_ctx_st {
const EVP_MD **mdevp; /* mtype -> digest */
uint8_t *mdord; /* mtype -> preference */
uint8_t mdmax; /* highest supported mtype */
unsigned long flags; /* feature bitmask */
};
/*
* Per connection DANE state
*/
struct ssl_dane_st {
struct dane_ctx_st *dctx;
STACK_OF(danetls_record) *trecs;
STACK_OF(X509) *certs; /* DANE-TA(2) Cert(0) Full(0) certs */
danetls_record *mtlsa; /* Matching TLSA record */
X509 *mcert; /* DANE matched cert */
uint32_t umask; /* Usages present */
int mdpth; /* Depth of matched cert */
int pdpth; /* Depth of PKIX trust */
unsigned long flags; /* feature bitmask */
};
#define DANETLS_ENABLED(dane) \
((dane) != NULL && sk_danetls_record_num((dane)->trecs) > 0)
#define DANETLS_USAGE_BIT(u) (((uint32_t)1) << u)
#define DANETLS_PKIX_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_TA))
#define DANETLS_PKIX_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_PKIX_EE))
#define DANETLS_DANE_TA_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_TA))
#define DANETLS_DANE_EE_MASK (DANETLS_USAGE_BIT(DANETLS_USAGE_DANE_EE))
#define DANETLS_PKIX_MASK (DANETLS_PKIX_TA_MASK | DANETLS_PKIX_EE_MASK)
#define DANETLS_DANE_MASK (DANETLS_DANE_TA_MASK | DANETLS_DANE_EE_MASK)
#define DANETLS_TA_MASK (DANETLS_PKIX_TA_MASK | DANETLS_DANE_TA_MASK)
#define DANETLS_EE_MASK (DANETLS_PKIX_EE_MASK | DANETLS_DANE_EE_MASK)
#define DANETLS_HAS_PKIX(dane) ((dane) && ((dane)->umask & DANETLS_PKIX_MASK))
#define DANETLS_HAS_DANE(dane) ((dane) && ((dane)->umask & DANETLS_DANE_MASK))
#define DANETLS_HAS_TA(dane) ((dane) && ((dane)->umask & DANETLS_TA_MASK))
#define DANETLS_HAS_EE(dane) ((dane) && ((dane)->umask & DANETLS_EE_MASK))
#define DANETLS_HAS_PKIX_TA(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_TA_MASK))
#define DANETLS_HAS_PKIX_EE(dane) ((dane)&&((dane)->umask & DANETLS_PKIX_EE_MASK))
#define DANETLS_HAS_DANE_TA(dane) ((dane)&&((dane)->umask & DANETLS_DANE_TA_MASK))
#define DANETLS_HAS_DANE_EE(dane) ((dane)&&((dane)->umask & DANETLS_DANE_EE_MASK))
#endif /* HEADER_INTERNAL_DANE_H */