Implement data structures from X.680, X.501, X.509, and PKCS#10, with X.690 encoding / decoding support

The implementation took four days, and it is still a little bit rough. Updated version should arrive soon.

Signed-off-by: Yuuta Liang <yuutaw@students.cs.ubc.ca>

1 files changed, 76 insertions, 0 deletions

diff --git a/src/main/model/pki/crl/CertificateList.java b/src/main/model/pki/crl/CertificateList.java
new file mode 100644
index 0000000..5142101
--- /dev/null
+++ b/src/main/model/pki/crl/CertificateList.java
@@ -0,0 +1,76 @@
+package model.pki.crl;
+
+import model.asn1.ASN1Object;
+import model.asn1.BitString;
+import model.asn1.Tag;
+import model.asn1.exceptions.ParseException;
+import model.asn1.parsing.BytesReader;
+import model.pki.AlgorithmIdentifier;
+import model.pki.cert.TbsCertificate;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.stream.Stream;
+
+/**
+ * Represents a signed X.509 CRL.
+ * <pre>
+ *      CertificateList ::= SIGNED{CertificateListContent}
+ * </pre>
+ */
+public class CertificateList extends ASN1Object {
+    /**
+     * All info of that CRL, excluding the signature.
+     * It will be signed, and the signature is in <pre>signature</pre>.
+     */
+    private final CertificateListContent crl;
+
+    /**
+     * The algorithm used for <pre>signature</pre>.
+     */
+    private final AlgorithmIdentifier signatureAlgorithm;
+
+    /**
+     * The signature.
+     */
+    private final BitString signature;
+
+    /**
+     * EFFECTS: Initialize the object with the given tag and parentTag, and list, signatureAlgorithm, and signature.
+     * REQUIRES: The algorithm must match the signature. The fields must have correct tags as described in the class
+     * specification (SEQUENCE, SEQUENCE, BIT STRING).
+     */
+    public CertificateList(Tag tag, Tag parentTag,
+                           final CertificateListContent crl,
+                           final AlgorithmIdentifier signatureAlgorithm,
+                           final BitString signature) {
+        super(tag, parentTag);
+        this.crl = crl;
+        this.signatureAlgorithm = signatureAlgorithm;
+        this.signature = signature;
+    }
+
+    /**
+     * EFFECT: Encode that sequence into an ordered array of bytes, following the class specification.
+     */
+    @Override
+    public Byte[] encodeValueDER() {
+        return Stream.of(Arrays.asList(crl.encodeDER()),
+                Arrays.asList(signatureAlgorithm.encodeDER()),
+                Arrays.asList(signature.encodeDER()))
+                .flatMap(Collection::stream)
+                .toArray(Byte[]::new);
+    }
+
+    public CertificateListContent getCrl() {
+        return crl;
+    }
+
+    public AlgorithmIdentifier getSignatureAlgorithm() {
+        return signatureAlgorithm;
+    }
+
+    public BitString getSignature() {
+        return signature;
+    }
+}