| package org.bouncycastle.asn1; |
| |
| import java.io.IOException; |
| |
| import org.bouncycastle.util.Arrays; |
| import org.bouncycastle.util.Strings; |
| |
| /** |
| * DER T61String (also the teletex string), try not to use this if you don't need to. The standard support the encoding for |
| * this has been withdrawn. |
| */ |
| public class DERT61String |
| extends ASN1Primitive |
| implements ASN1String |
| { |
| private byte[] string; |
| |
| /** |
| * return a T61 string from the passed in object. |
| * |
| * @param obj a DERT61String or an object that can be converted into one. |
| * @exception IllegalArgumentException if the object cannot be converted. |
| * @return a DERT61String instance, or null |
| */ |
| public static DERT61String getInstance( |
| Object obj) |
| { |
| if (obj == null || obj instanceof DERT61String) |
| { |
| return (DERT61String)obj; |
| } |
| |
| if (obj instanceof byte[]) |
| { |
| try |
| { |
| return (DERT61String)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 T61 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 DERT61String instance, or null |
| */ |
| public static DERT61String getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| ASN1Primitive o = obj.getObject(); |
| |
| if (explicit || o instanceof DERT61String) |
| { |
| return getInstance(o); |
| } |
| else |
| { |
| return new DERT61String(ASN1OctetString.getInstance(o).getOctets()); |
| } |
| } |
| |
| /** |
| * basic constructor - string encoded as a sequence of bytes. |
| * |
| * @param string the byte encoding of the string to be wrapped. |
| */ |
| public DERT61String( |
| byte[] string) |
| { |
| this.string = Arrays.clone(string); |
| } |
| |
| /** |
| * basic constructor - with string 8 bit assumed. |
| * |
| * @param string the string to be wrapped. |
| */ |
| public DERT61String( |
| String string) |
| { |
| this.string = Strings.toByteArray(string); |
| } |
| |
| /** |
| * Decode the encoded string and return it, 8 bit encoding assumed. |
| * @return the decoded String |
| */ |
| public String getString() |
| { |
| return Strings.fromByteArray(string); |
| } |
| |
| public String toString() |
| { |
| return getString(); |
| } |
| |
| boolean isConstructed() |
| { |
| return false; |
| } |
| |
| int encodedLength() |
| { |
| return 1 + StreamUtil.calculateBodyLength(string.length) + string.length; |
| } |
| |
| void encode( |
| ASN1OutputStream out) |
| throws IOException |
| { |
| out.writeEncoded(BERTags.T61_STRING, string); |
| } |
| |
| /** |
| * Return the encoded string as a byte array. |
| * @return the actual bytes making up the encoded body of the T61 string. |
| */ |
| public byte[] getOctets() |
| { |
| return Arrays.clone(string); |
| } |
| |
| boolean asn1Equals( |
| ASN1Primitive o) |
| { |
| if (!(o instanceof DERT61String)) |
| { |
| return false; |
| } |
| |
| return Arrays.areEqual(string, ((DERT61String)o).string); |
| } |
| |
| public int hashCode() |
| { |
| return Arrays.hashCode(string); |
| } |
| } |