1 package org.bouncycastle.operator; 2 3 import java.io.OutputStream; 4 5 import org.bouncycastle.asn1.x509.AlgorithmIdentifier; 6 7 public interface ContentVerifier 8 { 9 /** 10 * Return the algorithm identifier describing the signature 11 * algorithm and parameters this expander supports. 12 * 13 * @return algorithm oid and parameters. 14 */ getAlgorithmIdentifier()15 AlgorithmIdentifier getAlgorithmIdentifier(); 16 17 /** 18 * Returns a stream that will accept data for the purpose of calculating 19 * a signature for later verification. Use org.bouncycastle.util.io.TeeOutputStream if you want to accumulate 20 * the data on the fly as well. 21 * 22 * @return an OutputStream 23 */ getOutputStream()24 OutputStream getOutputStream(); 25 26 /** 27 * @param expected expected value of the signature on the data. 28 * @return true if the signature verifies, false otherwise 29 */ verify(byte[] expected)30 boolean verify(byte[] expected); 31 }