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+/* $OpenBSD: dns.h,v 1.19 2021/07/19 03:13:28 dtucker Exp $ */
+
+/*
+ * Copyright (c) 2003 Wesley Griffin. All rights reserved.
+ * Copyright (c) 2003 Jakob Schlyter. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef DNS_H
+#define DNS_H
+
+enum sshfp_types {
+ SSHFP_KEY_RESERVED = 0,
+ SSHFP_KEY_RSA = 1,
+ SSHFP_KEY_DSA = 2,
+ SSHFP_KEY_ECDSA = 3,
+ SSHFP_KEY_ED25519 = 4,
+ SSHFP_KEY_XMSS = 5
+};
+
+enum sshfp_hashes {
+ SSHFP_HASH_RESERVED = 0,
+ SSHFP_HASH_SHA1 = 1,
+ SSHFP_HASH_SHA256 = 2,
+ SSHFP_HASH_MAX = 3
+};
+
+#define DNS_RDATACLASS_IN 1
+#define DNS_RDATATYPE_SSHFP 44
+
+#define DNS_VERIFY_FOUND 0x00000001
+#define DNS_VERIFY_MATCH 0x00000002
+#define DNS_VERIFY_SECURE 0x00000004
+#define DNS_VERIFY_FAILED 0x00000008
+
+int verify_host_key_dns(const char *, struct sockaddr *,
+ struct sshkey *, int *);
+int export_dns_rr(const char *, struct sshkey *, FILE *, int);
+
+#endif /* DNS_H */