75 lines
1.9 KiB
Java
75 lines
1.9 KiB
Java
/*
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* Copyright (C) 2017 Christian Hagau <ach@hagau.se>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.sufficientlysecure.keychain.ssh.key;
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import java.io.ByteArrayOutputStream;
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import java.math.BigInteger;
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public class SshEncodedData {
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private ByteArrayOutputStream mData;
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public SshEncodedData() {
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this(64);
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}
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public SshEncodedData(int initialLength) {
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mData = new ByteArrayOutputStream(initialLength);
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}
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public void putString(String string) {
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byte[] buffer = string.getBytes();
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putString(buffer);
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}
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public void putString(byte[] buffer) {
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putUInt32(buffer.length);
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mData.write(buffer, 0, buffer.length);
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}
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public void putMPInt(BigInteger mpInt) {
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byte buffer[] = mpInt.toByteArray();
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if ((buffer.length == 1) && (buffer[0] == 0)) {
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putUInt32(0);
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} else {
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putString(buffer);
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}
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}
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public void putUInt32(int uInt) {
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mData.write(uInt >> 24);
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mData.write(uInt >> 16);
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mData.write(uInt >> 8);
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mData.write(uInt);
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}
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public void putByte(byte octet) {
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mData.write(octet);
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}
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public void putBoolean(boolean flag) {
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if (flag) {
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mData.write(1);
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} else {
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mData.write(0);
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}
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}
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public byte[] getBytes() {
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return mData.toByteArray();
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}
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} |