package aQute.libg.cryptography;

import aQute.lib.hex.*;

public abstract class Digest {
	final byte[]	digest;

	protected Digest(byte[] checksum, int width) {
		this.digest = checksum;
		if (digest.length != width)
			throw new IllegalArgumentException("Invalid width for digest: " + digest.length
					+ " expected " + width);
	}


	public byte[] digest() {
		return digest;
	}

	@Override public String toString() {
		return String.format("%s(d=%s)", getAlgorithm(), Hex.toHexString(digest));
	}

	public abstract String getAlgorithm();
}