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Diffstat (limited to 'src/main/model/csr/Attributes.java')
-rw-r--r-- | src/main/model/csr/Attributes.java | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/main/model/csr/Attributes.java b/src/main/model/csr/Attributes.java new file mode 100644 index 0000000..6819e71 --- /dev/null +++ b/src/main/model/csr/Attributes.java @@ -0,0 +1,65 @@ +package model.csr; + +import model.asn1.ASN1Object; +import model.asn1.Encodable; +import model.asn1.Tag; +import model.asn1.exceptions.ParseException; +import model.asn1.parsing.BytesReader; + +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.stream.Stream; + +/** + * Represents a CSR Attributes list. + * <pre> + * Attributes { ATTRIBUTE:IOSet } ::= SET OF Attribute{{ IOSet }} + * </pre> + */ +public class Attributes extends ASN1Object { + private final Attribute[] array; + + /** + * EFFECT: Initialize the list with the given tag, parentTag, and array. For tag and parentTag, consult + * {@link ASN1Object}. + */ + public Attributes(Tag tag, Tag parentTag, Attribute[] array) { + super(tag, parentTag); + this.array = array; + } + + /** + * EFFECT: Parse the list from input DER bytes. For details on parsing, refer to {@link ASN1Object}. + * Throws {@link ParseException} for invalid input. + * MODIFIES: this, encoded + */ + public Attributes(BytesReader encoded, boolean hasParentTag) throws ParseException { + super(encoded, hasParentTag); + final List<Attribute> list = new ArrayList<>(); + for (int i = 0; i < getLength();) { + int index = encoded.getIndex(); + final Attribute attribute = new Attribute(encoded, false); + attribute.getTag().enforce(TAG_SEQUENCE); + list.add(attribute); + index = encoded.getIndex() - index; + i += index; + } + this.array = list.toArray(new Attribute[0]); + } + + /** + * EFFECTS: Encode the SET OF into DER, keep order. Values will be encoded one-by-one. + */ + @Override + public Byte[] encodeValueDER() { + return Stream.of(array) + .map(Encodable::encodeDER) + .flatMap(Arrays::stream) + .toArray(Byte[]::new); + } + + public Attribute[] getArray() { + return array; + } +} |