diff options
Diffstat (limited to 'libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/ExtensionsGenerator.java')
-rw-r--r-- | libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/ExtensionsGenerator.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/ExtensionsGenerator.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/ExtensionsGenerator.java new file mode 100644 index 000000000..1f2f571db --- /dev/null +++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/ExtensionsGenerator.java @@ -0,0 +1,94 @@ +package org.spongycastle.asn1.x509; + +import java.io.IOException; +import java.util.Hashtable; +import java.util.Vector; + +import org.spongycastle.asn1.ASN1Encodable; +import org.spongycastle.asn1.ASN1Encoding; +import org.spongycastle.asn1.ASN1ObjectIdentifier; +import org.spongycastle.asn1.DEROctetString; + +/** + * Generator for X.509 extensions + */ +public class ExtensionsGenerator +{ + private Hashtable extensions = new Hashtable(); + private Vector extOrdering = new Vector(); + + /** + * Reset the generator + */ + public void reset() + { + extensions = new Hashtable(); + extOrdering = new Vector(); + } + + /** + * Add an extension with the given oid and the passed in value to be included + * in the OCTET STRING associated with the extension. + * + * @param oid OID for the extension. + * @param critical true if critical, false otherwise. + * @param value the ASN.1 object to be included in the extension. + */ + public void addExtension( + ASN1ObjectIdentifier oid, + boolean critical, + ASN1Encodable value) + throws IOException + { + this.addExtension(oid, critical, value.toASN1Primitive().getEncoded(ASN1Encoding.DER)); + } + + /** + * Add an extension with the given oid and the passed in byte array to be wrapped in the + * OCTET STRING associated with the extension. + * + * @param oid OID for the extension. + * @param critical true if critical, false otherwise. + * @param value the byte array to be wrapped. + */ + public void addExtension( + ASN1ObjectIdentifier oid, + boolean critical, + byte[] value) + { + if (extensions.containsKey(oid)) + { + throw new IllegalArgumentException("extension " + oid + " already added"); + } + + extOrdering.addElement(oid); + extensions.put(oid, new Extension(oid, critical, new DEROctetString(value))); + } + + /** + * Return true if there are no extension present in this generator. + * + * @return true if empty, false otherwise + */ + public boolean isEmpty() + { + return extOrdering.isEmpty(); + } + + /** + * Generate an Extensions object based on the current state of the generator. + * + * @return an X09Extensions object. + */ + public Extensions generate() + { + Extension[] exts = new Extension[extOrdering.size()]; + + for (int i = 0; i != extOrdering.size(); i++) + { + exts[i] = (Extension)extensions.get(extOrdering.elementAt(i)); + } + + return new Extensions(exts); + } +} |