| package org.bouncycastle.asn1; |
| |
| import java.io.IOException; |
| |
| /** |
| * DER BMPString object. |
| */ |
| public class DERBMPString |
| extends ASN1Object |
| implements DERString |
| { |
| String string; |
| |
| /** |
| * return a BMP String from the given object. |
| * |
| * @param obj the object we want converted. |
| * @exception IllegalArgumentException if the object cannot be converted. |
| */ |
| public static DERBMPString getInstance( |
| Object obj) |
| { |
| if (obj == null || obj instanceof DERBMPString) |
| { |
| return (DERBMPString)obj; |
| } |
| |
| if (obj instanceof ASN1OctetString) |
| { |
| return new DERBMPString(((ASN1OctetString)obj).getOctets()); |
| } |
| |
| if (obj instanceof ASN1TaggedObject) |
| { |
| return getInstance(((ASN1TaggedObject)obj).getObject()); |
| } |
| |
| throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); |
| } |
| |
| /** |
| * return a BMP 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. |
| */ |
| public static DERBMPString getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| return getInstance(obj.getObject()); |
| } |
| |
| |
| /** |
| * basic constructor - byte encoded string. |
| */ |
| public DERBMPString( |
| byte[] string) |
| { |
| char[] cs = new char[string.length / 2]; |
| |
| for (int i = 0; i != cs.length; i++) |
| { |
| cs[i] = (char)((string[2 * i] << 8) | (string[2 * i + 1] & 0xff)); |
| } |
| |
| this.string = new String(cs); |
| } |
| |
| /** |
| * basic constructor |
| */ |
| public DERBMPString( |
| String string) |
| { |
| this.string = string; |
| } |
| |
| public String getString() |
| { |
| return string; |
| } |
| |
| public String toString() |
| { |
| return string; |
| } |
| |
| public int hashCode() |
| { |
| return this.getString().hashCode(); |
| } |
| |
| protected boolean asn1Equals( |
| DERObject o) |
| { |
| if (!(o instanceof DERBMPString)) |
| { |
| return false; |
| } |
| |
| DERBMPString s = (DERBMPString)o; |
| |
| return this.getString().equals(s.getString()); |
| } |
| |
| void encode( |
| DEROutputStream out) |
| throws IOException |
| { |
| char[] c = string.toCharArray(); |
| byte[] b = new byte[c.length * 2]; |
| |
| for (int i = 0; i != c.length; i++) |
| { |
| b[2 * i] = (byte)(c[i] >> 8); |
| b[2 * i + 1] = (byte)c[i]; |
| } |
| |
| out.writeEncoded(BMP_STRING, b); |
| } |
| } |