| package org.bouncycastle.asn1; |
| |
| public class ASN1ObjectIdentifier |
| extends DERObjectIdentifier |
| { |
| public ASN1ObjectIdentifier(String identifier) |
| { |
| super(identifier); |
| } |
| |
| ASN1ObjectIdentifier(byte[] bytes) |
| { |
| super(bytes); |
| } |
| |
| ASN1ObjectIdentifier(ASN1ObjectIdentifier oid, String branch) |
| { |
| super(oid, branch); |
| } |
| |
| /** |
| * Return an OID that creates a branch under the current one. |
| * |
| * @param branchID node numbers for the new branch. |
| * @return the OID for the new created branch. |
| */ |
| public ASN1ObjectIdentifier branch(String branchID) |
| { |
| return new ASN1ObjectIdentifier(this, branchID); |
| } |
| |
| /** |
| * Return true if this oid is an extension of the passed in branch, stem. |
| * @param stem the arc or branch that is a possible parent. |
| * @return true if the branch is on the passed in stem, false otherwise. |
| */ |
| public boolean on(ASN1ObjectIdentifier stem) |
| { |
| String id = getId(), stemId = stem.getId(); |
| return id.length() > stemId.length() && id.charAt(stemId.length()) == '.' && id.startsWith(stemId); |
| } |
| } |