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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8 with debug enabled.

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package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1String;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERBMPString;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERUTF8String;
import org.bouncycastle.asn1.DERVisibleString;

/**
 * DisplayText class, used in
 * CertificatePolicies X509 V3 extensions (in policy qualifiers).
 *
 * 

It stores a string in a chosen encoding. *

 * DisplayText ::= CHOICE {
 *      ia5String        IA5String      (SIZE (1..200)),
 *      visibleString    VisibleString  (SIZE (1..200)),
 *      bmpString        BMPString      (SIZE (1..200)),
 *      utf8String       UTF8String     (SIZE (1..200)) }
 * 
* @see PolicyQualifierInfo * @see PolicyInformation */ public class DisplayText extends ASN1Object implements ASN1Choice { /** * Constant corresponding to ia5String encoding. * */ public static final int CONTENT_TYPE_IA5STRING = 0; /** * Constant corresponding to bmpString encoding. * */ public static final int CONTENT_TYPE_BMPSTRING = 1; /** * Constant corresponding to utf8String encoding. * */ public static final int CONTENT_TYPE_UTF8STRING = 2; /** * Constant corresponding to visibleString encoding. * */ public static final int CONTENT_TYPE_VISIBLESTRING = 3; /** * Describe constant DISPLAY_TEXT_MAXIMUM_SIZE here. * */ public static final int DISPLAY_TEXT_MAXIMUM_SIZE = 200; int contentType; ASN1String contents; /** * Creates a new DisplayText instance. * * @param type the desired encoding type for the text. * @param text the text to store. Strings longer than 200 * characters are truncated. */ public DisplayText(int type, String text) { if (text.length() > DISPLAY_TEXT_MAXIMUM_SIZE) { // RFC3280 limits these strings to 200 chars // truncate the string text = text.substring (0, DISPLAY_TEXT_MAXIMUM_SIZE); } contentType = type; switch (type) { case CONTENT_TYPE_IA5STRING: contents = new DERIA5String(text); break; case CONTENT_TYPE_UTF8STRING: contents = new DERUTF8String(text); break; case CONTENT_TYPE_VISIBLESTRING: contents = new DERVisibleString(text); break; case CONTENT_TYPE_BMPSTRING: contents = new DERBMPString(text); break; default: contents = new DERUTF8String(text); break; } } /** * Creates a new DisplayText instance. * * @param text the text to encapsulate. Strings longer than 200 * characters are truncated. */ public DisplayText(String text) { // by default use UTF8String if (text.length() > DISPLAY_TEXT_MAXIMUM_SIZE) { text = text.substring(0, DISPLAY_TEXT_MAXIMUM_SIZE); } contentType = CONTENT_TYPE_UTF8STRING; contents = new DERUTF8String(text); } /** * Creates a new DisplayText instance. *

Useful when reading back a DisplayText class * from it's ASN1Encodable/DEREncodable form. * * @param de a DEREncodable instance. */ private DisplayText(ASN1String de) { contents = de; if (de instanceof DERUTF8String) { contentType = CONTENT_TYPE_UTF8STRING; } else if (de instanceof DERBMPString) { contentType = CONTENT_TYPE_BMPSTRING; } else if (de instanceof DERIA5String) { contentType = CONTENT_TYPE_IA5STRING; } else if (de instanceof DERVisibleString) { contentType = CONTENT_TYPE_VISIBLESTRING; } else { throw new IllegalArgumentException("unknown STRING type in DisplayText"); } } public static DisplayText getInstance(Object obj) { if (obj instanceof ASN1String) { return new DisplayText((ASN1String)obj); } else if (obj == null || obj instanceof DisplayText) { return (DisplayText)obj; } throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); } public static DisplayText getInstance( ASN1TaggedObject obj, boolean explicit) { return getInstance(obj.getObject()); // must be explicitly tagged } public ASN1Primitive toASN1Primitive() { return (ASN1Primitive)contents; } /** * Returns the stored String object. * * @return the stored text as a String. */ public String getString() { return contents.getString(); } }





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