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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. Note: this package includes the NTRU encryption algorithms.

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package org.bouncycastle.asn1;

import java.io.IOException;

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

/**
 * ASN.1 VisibleString object encoding ISO 646 (ASCII) character code points 32 to 126.
 * 

* Explicit character set escape sequences are not allowed. *

*/ public abstract class ASN1VisibleString extends ASN1Primitive implements ASN1String { static final ASN1UniversalType TYPE = new ASN1UniversalType(ASN1VisibleString.class, BERTags.VISIBLE_STRING) { ASN1Primitive fromImplicitPrimitive(DEROctetString octetString) { return createPrimitive(octetString.getOctets()); } }; /** * Return a Visible String from the passed in object. * * @param obj an ASN1VisibleString or an object that can be converted into one. * @exception IllegalArgumentException if the object cannot be converted. * @return an ASN1VisibleString instance, or null */ public static ASN1VisibleString getInstance( Object obj) { if (obj == null || obj instanceof ASN1VisibleString) { return (ASN1VisibleString)obj; } if (obj instanceof ASN1Encodable) { ASN1Primitive primitive = ((ASN1Encodable)obj).toASN1Primitive(); if (primitive instanceof ASN1VisibleString) { return (ASN1VisibleString)primitive; } } if (obj instanceof byte[]) { try { return (ASN1VisibleString)TYPE.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 a Visible 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 an ASN1VisibleString instance, or null */ public static ASN1VisibleString getInstance(ASN1TaggedObject taggedObject, boolean explicit) { return (ASN1VisibleString)TYPE.getContextInstance(taggedObject, explicit); } final byte[] contents; ASN1VisibleString(String string) { this.contents = Strings.toByteArray(string); } ASN1VisibleString(byte[] contents, boolean clone) { this.contents = clone ? Arrays.clone(contents) : contents; } public final String getString() { return Strings.fromByteArray(contents); } public String toString() { return getString(); } public final byte[] getOctets() { return Arrays.clone(contents); } final boolean encodeConstructed() { return false; } final int encodedLength(boolean withTag) { return ASN1OutputStream.getLengthOfEncodingDL(withTag, contents.length); } final void encode(ASN1OutputStream out, boolean withTag) throws IOException { out.writeEncodingDL(withTag, BERTags.VISIBLE_STRING, contents); } final boolean asn1Equals(ASN1Primitive other) { if (!(other instanceof ASN1VisibleString)) { return false; } ASN1VisibleString that = (ASN1VisibleString)other; return Arrays.areEqual(this.contents, that.contents); } public final int hashCode() { return Arrays.hashCode(contents); } static ASN1VisibleString createPrimitive(byte[] contents) { return new DERVisibleString(contents, false); } }




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