hickory_proto/rr/dnssec/
trust_anchor.rs

1/*
2 * Copyright (C) 2015 Benjamin Fry <benjaminfry@me.com>
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//! Allows for the root trust_anchor to either be added to or replaced for dns_sec validation.
18
19use std::default::Default;
20
21use crate::rr::dnssec::PublicKey;
22
23const ROOT_ANCHOR_ORIG: &[u8] = include_bytes!("roots/19036.rsa");
24const ROOT_ANCHOR_2018: &[u8] = include_bytes!("roots/20326.rsa");
25
26/// The root set of trust anchors for validating DNSSEC, anything in this set will be trusted
27#[derive(Clone)]
28pub struct TrustAnchor {
29    // TODO: these should also store some information, or more specifically, metadata from the signed
30    //  public certificate.
31    pkeys: Vec<Vec<u8>>,
32}
33
34impl Default for TrustAnchor {
35    fn default() -> Self {
36        Self {
37            pkeys: vec![ROOT_ANCHOR_ORIG.to_owned(), ROOT_ANCHOR_2018.to_owned()],
38        }
39    }
40}
41
42impl TrustAnchor {
43    /// Creates a new empty trust anchor set
44    pub fn new() -> Self {
45        Self { pkeys: vec![] }
46    }
47
48    /// determines if the key is in the trust anchor set with the raw dnskey bytes
49    ///
50    /// # Arguments
51    ///
52    /// * `other_key` - The raw dnskey in bytes
53    pub fn contains_dnskey_bytes(&self, other_key: &[u8]) -> bool {
54        self.pkeys.iter().any(|k| other_key == k.as_slice())
55    }
56
57    /// determines if the key is in the trust anchor set
58    pub fn contains<P: PublicKey>(&self, other_key: &P) -> bool {
59        self.contains_dnskey_bytes(other_key.public_bytes())
60    }
61
62    /// inserts the trust_anchor to the trusted chain
63    pub fn insert_trust_anchor<P: PublicKey>(&mut self, public_key: &P) {
64        if !self.contains(public_key) {
65            self.pkeys.push(public_key.public_bytes().to_vec())
66        }
67    }
68
69    /// get the trust anchor at the specified index
70    pub fn get(&self, idx: usize) -> &[u8] {
71        &self.pkeys[idx]
72    }
73
74    /// number of keys in trust_anchor
75    pub fn len(&self) -> usize {
76        self.pkeys.len()
77    }
78
79    /// returns true if there are no keys in the trust_anchor
80    pub fn is_empty(&self) -> bool {
81        self.pkeys.is_empty()
82    }
83}
84
85#[test]
86fn test_kjqmt7v() {
87    let trust = TrustAnchor::default();
88    assert_eq!(trust.get(0), ROOT_ANCHOR_ORIG);
89    assert!(trust.contains_dnskey_bytes(ROOT_ANCHOR_ORIG));
90}
hickory_proto/rr/dnssec/trust_anchor.rs

hickory_proto/rr/dnssec/
trust_anchor.rs
