void
rrFromWire(DNSInput in) throws IOException {
	footprint = in.readU16();
	alg = in.readU8();
	digestid = in.readU8();
	digest = in.readByteArray();
}
Creates a DLV Record from the given data
@param footprint The original KEY record's footprint (keyid).
@param alg The original key algorithm.
@param digestid The digest id code.
@param digest A hash of the original key.
src/main/java/core/org/xbill/DNS/DLVRecord.java