Java example source code file (SignerOutputStream.java)

This example Java source code file (SignerOutputStream.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bytearrayoutputstream, canonicalized, runtimeexception, signaturealgorithm, signedinfo, signeroutputstream, stringbuilder, xmlsignatureexception

The SignerOutputStream.java Java example source code

/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.sun.org.apache.xml.internal.security.utils;

import java.io.ByteArrayOutputStream;

import com.sun.org.apache.xml.internal.security.algorithms.SignatureAlgorithm;
import com.sun.org.apache.xml.internal.security.signature.XMLSignatureException;

/**
 * @author raul
 *
 */
public class SignerOutputStream extends ByteArrayOutputStream {
    private static java.util.logging.Logger log =
        java.util.logging.Logger.getLogger(SignerOutputStream.class.getName());

    final SignatureAlgorithm sa;

    /**
     * @param sa
     */
    public SignerOutputStream(SignatureAlgorithm sa) {
        this.sa = sa;
    }

    /** @inheritDoc */
    public void write(byte[] arg0)  {
        try {
            sa.update(arg0);
        } catch (XMLSignatureException e) {
            throw new RuntimeException("" + e);
        }
    }

    /** @inheritDoc */
    public void write(int arg0) {
        try {
            sa.update((byte)arg0);
        } catch (XMLSignatureException e) {
            throw new RuntimeException("" + e);
        }
    }

    /** @inheritDoc */
    public void write(byte[] arg0, int arg1, int arg2) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "Canonicalized SignedInfo:");
            StringBuilder sb = new StringBuilder(arg2);
            for (int i = arg1; i < (arg1 + arg2); i++) {
                sb.append((char)arg0[i]);
            }
            log.log(java.util.logging.Level.FINE, sb.toString());
        }
        try {
            sa.update(arg0, arg1, arg2);
        } catch (XMLSignatureException e) {
            throw new RuntimeException("" + e);
        }
    }
}