org.wildfly.security.asn1.ASN1Encoder Maven / Gradle / Ivy
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.security.asn1;
import java.io.Flushable;
import java.math.BigInteger;
import java.time.ZonedDateTime;
import java.util.BitSet;
import java.util.EnumSet;
/**
* An interface for encoding ASN.1 values.
*
* @author Farah Juma
*/
public interface ASN1Encoder extends Flushable {
/**
* Start encoding an ASN.1 sequence. All subsequent encode operations will be part of
* this sequence until {@link #endSequence()} is called.
*/
void startSequence();
/**
* Finish encoding an ASN.1 sequence.
*
* @throws IllegalStateException if there is no sequence to end
*/
void endSequence() throws IllegalStateException;
/**
* Start encoding an ASN.1 set. All subsequent encode operations will be part of this
* set until {@link #endSet()} is called.
*/
void startSet();
/**
* Finish encoding an ASN.1 set.
*
* @throws IllegalStateException if there is no set to end
*/
void endSet() throws IllegalStateException;
/**
* Start encoding an ASN.1 "set of" element. All subsequent encode operations will be
* part of this set until {@link #endSetOf()} is called.
*/
void startSetOf();
/**
* Finish encoding an ASN.1 "set of" element.
*
* @throws IllegalStateException if there is no set to end
*/
void endSetOf() throws IllegalStateException;
/**
* Start encoding an ASN.1 explicitly tagged element. All subsequent encode operations
* will be part of this explicitly tagged element until {@link #endExplicit()} is called.
*
* @param number the tag number for the explicit, context-specific tag
*/
void startExplicit(int number);
/**
* Start encoding an ASN.1 explicitly tagged element. All subsequent encode operations
* will be part of this explicitly tagged element until {@link #endExplicit()} is called.
*
* @param clazz the class for the explicit tag
* @param number the tag number for the explicit tag
*/
void startExplicit(int clazz, int number);
/**
* Finish encoding an ASN.1 explicitly tagged element.
*
* @throws IllegalStateException if there is no explicitly tagged element to end
*/
void endExplicit() throws IllegalStateException;
/**
* Encode an ASN.1 octet string value.
*
* @param str the octet string to encode
*/
void encodeOctetString(String str);
/**
* Encode an ASN.1 octet string value.
*
* @param str the byte array containing the octet string to encode
*/
void encodeOctetString(byte[] str);
/**
* Encode an ASN.1 IA5 string value.
*
* @param str the IA5 string to encode
*/
void encodeIA5String(String str);
/**
* Encode an ASN.1 IA5 string value.
*
* @param str the byte array containing IA5 string to encode
*/
void encodeIA5String(byte[] str);
/**
* Encode an ASN.1 printable string value.
*
* @param str the byte array containing the printable string to encode
*/
void encodePrintableString(byte[] str);
/**
* Encode an ASN.1 printable string value.
*
* @param str the printable string to encode
*/
void encodePrintableString(String str);
/**
* Encode an ASN.1 UTF8String string value.
*
* @param str the string to encode
*/
void encodeUTF8String(String str);
/**
* Encode an ASN.1 BMPString string value.
*
* @param str the string to encode
*/
void encodeBMPString(String str);
/**
* Encode an ASN.1 UniversalString string value.
*
* @param str the string to encode
*/
void encodeUniversalString(String str);
/**
* Encode an ASN.1 bit string value.
*
* @param str the byte array containing the bit string to encode (all bits in the bit string will be used)
*/
void encodeBitString(byte[] str);
/**
* Encode an ASN.1 bit string value.
*
* @param str the byte array containing the bit string to encode
* @param numUnusedBits the number of unused bits in the byte array
*/
void encodeBitString(byte[] str, int numUnusedBits);
/**
* Encode an enum set as an ASN.1 bit string, with each ordinal value of the set representing a single bit.
*
* @param enumSet the enum set (must not be {@code null})
*/
void encodeBitString(EnumSet enumSet);
/**
* Encode an ASN.1 bit string value.
*
* @param bitSet the bit set (must not be {@code null})
*/
void encodeBitString(BitSet bitSet);
/**
* Encode an ASN.1 bit string value.
*
* @param binaryStr the bit string to encode, as a binary string
*/
void encodeBitString(String binaryStr);
/**
* Encode an ASN.1 bit string where the value represents the binary form of the given integer.
*
* @param integer the integer to encode as a binary string
*/
void encodeBitString(BigInteger integer);
/**
* Encode an ASN.1 GeneralizedTime type.
*
* @param time the time to encode (must not be {@code null})
*/
void encodeGeneralizedTime(ZonedDateTime time);
/**
* Encode an ASN.1 object identifier value.
*
* @param objectIdentifier the object identifier to encode
* @throws ASN1Exception if the given object identifier is invalid
*/
void encodeObjectIdentifier(String objectIdentifier) throws ASN1Exception;
/**
* Encode an ASN.1 null value.
*/
void encodeNull();
/**
* Indicate that the next encode operation should encode an ASN.1 value using
* the given implicit, context-specific tag.
*
* @param number the tag number for the implicit, context-specific tag
*/
void encodeImplicit(int number);
/**
* Indicate that the next encode operation should encode an ASN.1 value using
* the given implicit tag.
*
* @param clazz the class for the implicit tag
* @param number the tag number for the implicit tag
*/
void encodeImplicit(int clazz, int number);
/**
* Encode an ASN.1 {@code boolean} value.
*
* @param value the boolean to encode
*/
void encodeBoolean(boolean value);
/**
* Encode an ASN.1 integer value.
*
* @param integer the integer to encode
*/
default void encodeInteger(int integer) {
encodeInteger(BigInteger.valueOf(integer));
}
/**
* Encode an ASN.1 integer value.
*
* @param integer the integer to encode
*/
void encodeInteger(BigInteger integer);
/**
* Write an already encoded ASN.1 value to the target destination.
*
* @param encoded the encoded ASN.1 value to write
*/
void writeEncoded(byte[] encoded);
/**
* Flush the encoder, writing any saved ASN.1 encoded values to the target destination.
* Any unfinished sequences or sets will be ended.
*/
void flush();
/**
* Get the ASN.1 encoded bytes.
*
* @return the ASN.1 encoded bytes
*/
byte[] getEncoded();
}