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Diffstat (limited to 'src/main/model/pki/cert/Extensions.java')
-rw-r--r-- | src/main/model/pki/cert/Extensions.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/main/model/pki/cert/Extensions.java b/src/main/model/pki/cert/Extensions.java new file mode 100644 index 0000000..780fa2c --- /dev/null +++ b/src/main/model/pki/cert/Extensions.java @@ -0,0 +1,67 @@ +package model.pki.cert; + +import model.asn1.ASN1Object; +import model.asn1.Encodable; +import model.asn1.Tag; +import model.asn1.exceptions.ParseException; +import model.asn1.parsing.BytesReader; +import model.x501.RelativeDistinguishedName; + +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.stream.Stream; + +/** + * Represents an X.509 certificate extensions list: + * <pre> + * Extensions ::= SEQUENCE OF Extension + * </pre> + */ +public class Extensions extends ASN1Object { + private final Extension[] extensions; + + /** + * EFFECT: Initialize with the given tags and extensions. For tag and parentTag, consult + * {@link ASN1Object}. + * REQUIRES: Extensions should have SEQUENCE tag. + */ + public Extensions(Tag tag, Tag parentTag, Extension[] extensions) { + super(tag, parentTag); + this.extensions = extensions; + } + + /** + * EFFECT: Parse the Name from input DER bytes. For details on parsing, refer to {@link ASN1Object}. + * Throws {@link ParseException} for invalid input. + * MODIFIES: this, encoded + */ + public Extensions(BytesReader encoded, boolean hasParentTag) throws ParseException { + super(encoded, hasParentTag); + final List<Extension> list = new ArrayList<>(); + for (int i = 0; i < getLength();) { + int index = encoded.getIndex(); + final Extension ext = new Extension(encoded, false); + ext.getTag().enforce(TAG_SEQUENCE); + list.add(ext); + index = encoded.getIndex() - index; + i += index; + } + this.extensions = list.toArray(new Extension[0]); + } + + /** + * EFFECTS: Encode the SEQUENCE OF into DER, keep order. RDNs will be encoded one-by-one. + */ + @Override + public Byte[] encodeValueDER() { + return Stream.of(extensions) + .map(Encodable::encodeDER) + .flatMap(Arrays::stream) + .toArray(Byte[]::new); + } + + public Extension[] getExtensions() { + return extensions; + } +} |