All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.bouncycastle.asn1.DERIA5String Maven / Gradle / Ivy

There is a newer version: 1.2.2.1-jre17
Show newest version
package org.bouncycastle.asn1;

import java.io.IOException;

import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.Strings;

/**
 * DER IA5String object - this is a ISO 646 (ASCII) string encoding code points 0 to 127.
 * 

* Explicit character set escape sequences are not allowed. *

*/ public class DERIA5String extends ASN1Primitive implements ASN1String { private final byte[] string; /** * Return an IA5 string from the passed in object * * @param obj a DERIA5String or an object that can be converted into one. * @exception IllegalArgumentException if the object cannot be converted. * @return a DERIA5String instance, or null. */ public static DERIA5String getInstance( Object obj) { if (obj == null || obj instanceof DERIA5String) { return (DERIA5String)obj; } if (obj instanceof byte[]) { try { return (DERIA5String)fromByteArray((byte[])obj); } catch (Exception e) { throw new IllegalArgumentException("encoding error in getInstance: " + e.toString()); } } throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); } /** * Return an IA5 String from a tagged object. * * @param obj the tagged object holding the object we want * @param explicit true if the object is meant to be explicitly * tagged false otherwise. * @exception IllegalArgumentException if the tagged object cannot * be converted. * @return a DERIA5String instance, or null. */ public static DERIA5String getInstance( ASN1TaggedObject obj, boolean explicit) { ASN1Primitive o = obj.getObject(); if (explicit || o instanceof DERIA5String) { return getInstance(o); } else { return new DERIA5String(ASN1OctetString.getInstance(o).getOctets()); } } /** * Basic constructor - with bytes. * @param string the byte encoding of the characters making up the string. */ DERIA5String( byte[] string) { this.string = string; } /** * Basic constructor - without validation. * @param string the base string to use.. */ public DERIA5String( String string) { this(string, false); } /** * Constructor with optional validation. * * @param string the base string to wrap. * @param validate whether or not to check the string. * @throws IllegalArgumentException if validate is true and the string * contains characters that should not be in an IA5String. */ public DERIA5String( String string, boolean validate) { if (string == null) { throw new NullPointerException("'string' cannot be null"); } if (validate && !isIA5String(string)) { throw new IllegalArgumentException("'string' contains illegal characters"); } this.string = Strings.toByteArray(string); } public String getString() { return Strings.fromByteArray(string); } public String toString() { return getString(); } public byte[] getOctets() { return Arrays.clone(string); } boolean isConstructed() { return false; } int encodedLength() { return 1 + StreamUtil.calculateBodyLength(string.length) + string.length; } void encode(ASN1OutputStream out, boolean withTag) throws IOException { out.writeEncoded(withTag, BERTags.IA5_STRING, string); } public int hashCode() { return Arrays.hashCode(string); } boolean asn1Equals( ASN1Primitive o) { if (!(o instanceof DERIA5String)) { return false; } DERIA5String s = (DERIA5String)o; return Arrays.areEqual(string, s.string); } /** * return true if the passed in String can be represented without * loss as an IA5String, false otherwise. * * @param str the string to check. * @return true if character set in IA5String set, false otherwise. */ public static boolean isIA5String( String str) { for (int i = str.length() - 1; i >= 0; i--) { char ch = str.charAt(i); if (ch > 0x007f) { return false; } } return true; } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy