org.jolokia.jvmagent.security.asn1.DEROctetString Maven / Gradle / Ivy
/*
* Copyright 2009-2021 Roland Huss
*
* Licensed 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 org.jolokia.jvmagent.security.asn1;
import java.nio.charset.StandardCharsets;
public class DEROctetString implements DERObject {
// ISO/IEC 10646 - Unicode
public static final byte DER_UTF8STRING_TAG = 0x0C;
// X.680, 41.4: A-Za-z0-9 '()+,-./:=?
public static final byte DER_PRINTABLESTRING_TAG = 0x13;
// ISO/IEC 646 - ISO 7-bit coded character set
public static final byte DER_IA5STRING_TAG = 0x16;
private final byte tag;
private final String value;
public DEROctetString(byte tag, String value) {
if (value.length() > 0xFFFF) {
throw new IllegalArgumentException("Can't DER encoded Strings longer than 64KiB");
}
this.tag = tag;
this.value = value;
}
@Override
public byte[] getEncoded() {
byte[] bytes = value.getBytes(StandardCharsets.UTF_8);
if (bytes.length < 128) {
byte[] result = new byte[bytes.length + 2];
result[0] = tag;
result[1] = (byte) bytes.length;
System.arraycopy(bytes, 0, result, 2, bytes.length);
return result;
} else if (bytes.length <= 256) {
byte[] result = new byte[bytes.length + 3];
result[0] = tag;
result[1] = (byte) 0x81;
result[2] = (byte) bytes.length;
System.arraycopy(bytes, 0, result, 3, bytes.length);
return result;
} else /* if (bytes.length <= 65536) */ {
byte[] result = new byte[bytes.length + 4];
result[0] = tag;
result[1] = (byte) 0x82;
result[2] = (byte) ((bytes.length & 0xff00) >> 8);
result[3] = (byte) (bytes.length & 0xff);
System.arraycopy(bytes, 0, result, 4, bytes.length);
return result;
}
}
@Override
public boolean isPrimitive() {
return true;
}
}