void
rdataFromString(Tokenizer st, Name origin) throws IOException {
	footprint = st.getUInt16();
	alg = st.getUInt8();
	digestid = st.getUInt8();
	digest = st.getHex();
}
Creates a DS Record from the given data
@param digestid The digest id code.
@param key The key to digest
src/main/java/core/org/xbill/DNS/DSRecord.java