/
certificates.clj
85 lines (74 loc) · 2.74 KB
/
certificates.clj
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
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
;; Copyright (c) 2015-2016 Andrey Antukh <niwi@niwi.nz>
;;
;; Licensed under the Apache License, Version 2.0 (the "License")
;; you may not use this file except in compliance with the License.
;; You may obtain a copy of the License at
;;
;; http://www.apache.org/licenses/LICENSE-2.0
;;
;; Unless required by applicable law or agreed to in writing, software
;; distributed under the License is distributed on an "AS IS" BASIS,
;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;; See the License for the specific language governing permissions and
;; limitations under the License.
(ns buddy.core.certificates
(:require [clojure.java.io :as io])
(:import
java.io.StringReader
java.security.Security
java.security.PublicKey
org.bouncycastle.openssl.PEMParser
org.bouncycastle.operator.jcajce.JcaContentVerifierProviderBuilder
org.bouncycastle.cert.X509CertificateHolder))
(when (nil? (Security/getProvider "BC"))
(Security/addProvider (org.bouncycastle.jce.provider.BouncyCastleProvider.)))
(defn- public-key-verifier
[pub-key]
(let [builder (doto (JcaContentVerifierProviderBuilder.)
(.setProvider "BC"))]
(cond
(instance? X509CertificateHolder pub-key)
(.build builder ^X509CertificateHolder pub-key)
(instance? PublicKey pub-key)
(.build builder ^PublicKey pub-key)
:else
(throw (Exception. "Unknown public key type" {:kind (class pub-key)})))))
(defn certificate
"Reads a certificate from a PEM encoded file or stream"
[x]
(with-open [reader (io/reader x)]
(let [parser (PEMParser. reader)
keyinfo (.readObject parser)]
keyinfo)))
(defn not-after
"Returns the last date this signature is valid."
[^X509CertificateHolder cert]
(.getNotAfter cert))
(defn not-before
"Returns the first date this certificate is valid."
[^X509CertificateHolder cert]
[cert]
(.getNotBefore cert))
(defn valid-on-date?
"Returns true if certificate is valid date. Defaults to today"
([^X509CertificateHolder certificate date]
(.isValidOn certificate date))
([^X509CertificateHolder certificate]
(valid-on-date? certificate (java.util.Date.))))
(defn subject
"Returns the subject of the certificate"
[^X509CertificateHolder cert]
(.toString (.getSubject cert)))
(defn str->certificate
"Certificate constructor from string"
[certdata]
(with-open [reader (StringReader. ^String certdata)]
(certificate reader)))
(defn verify-signature
"Verifies that the certificate is signed with the provided public key."
[^X509CertificateHolder cert public-key]
(.isSignatureValid cert (public-key-verifier public-key)))
(defn certificate?
"Returns true if object is a certificate"
[x]
(instance? X509CertificateHolder x))