1 package org.bouncycastle.operator; 2 3 import java.io.InputStream; 4 5 import org.bouncycastle.asn1.x509.AlgorithmIdentifier; 6 7 /** 8 * General interface for an operator that is able to produce 9 * an InputStream that will decrypt a stream of encrypted data. 10 */ 11 public interface InputDecryptor 12 { 13 /** 14 * Return the algorithm identifier describing the encryption 15 * algorithm and parameters this decryptor can process. 16 * 17 * @return algorithm oid and parameters. 18 */ 19 AlgorithmIdentifier getAlgorithmIdentifier(); 20 21 /** 22 * Wrap the passed in input stream encIn, returning an input stream 23 * that decrypts what it reads from encIn before returning it. 24 * 25 * @param encIn InputStream containing encrypted input. 26 * @return an decrypting InputStream 27 */ 28 InputStream getInputStream(InputStream encIn); 29 } 30
