public byte[] getIV() {
if (iv != null) {
return iv.getOctets();
} else {
return null;
}
}
/**
* return an Integer from a tagged object.
*
* @param obj the tagged object holding the object we want
* @param explicit true if the object is meant to be explicitly tagged false otherwise.
* @throws IllegalArgumentException if the tagged object cannot be converted.
* @return an ASN1Integer instance.
*/
public static ASN1Integer getInstance(ASN1TaggedObject obj, boolean explicit) {
ASN1Primitive o = obj.getObject();
if (explicit || (o instanceof ASN1Integer)) {
return getInstance(o);
} else {
return new ASN1Integer(ASN1OctetString.getInstance(obj.getObject()).getOctets());
}
}
/**
* return an Integer from a tagged object.
*
* @param obj the tagged object holding the object we want
* @param explicit true if the object is meant to be explicitly tagged false otherwise.
* @exception IllegalArgumentException if the tagged object cannot be converted.
*/
public static DERInteger getInstance(ASN1TaggedObject obj, boolean explicit) {
DERObject o = obj.getObject();
if (explicit || o instanceof DERInteger) {
return getInstance(o);
} else {
return new ASN1Integer(ASN1OctetString.getInstance(obj.getObject()).getOctets());
}
}
/**
* return a Printable String from a tagged object.
*
* @param obj the tagged object holding the object we want
* @param explicit true if the object is meant to be explicitly tagged false otherwise.
* @exception IllegalArgumentException if the tagged object cannot be converted.
*/
public static DERPrintableString getInstance(ASN1TaggedObject obj, boolean explicit) {
ASN1Primitive o = obj.getObject();
if (explicit || o instanceof DERPrintableString) {
return getInstance(o);
} else {
return new DERPrintableString(ASN1OctetString.getInstance(o).getOctets());
}
}