106 lines
2.7 KiB
C#
106 lines
2.7 KiB
C#
using System;
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using System.Text;
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using Org.BouncyCastle.Utilities;
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namespace Org.BouncyCastle.Asn1
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{
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/**
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* Der UniversalString object.
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*/
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public class DerUniversalString
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: DerStringBase
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{
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private static readonly char[] table = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
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private readonly byte[] str;
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/**
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* return a Universal string from the passed in object.
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*
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* @exception ArgumentException if the object cannot be converted.
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*/
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public static DerUniversalString GetInstance(
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object obj)
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{
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if (obj == null || obj is DerUniversalString)
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{
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return (DerUniversalString)obj;
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}
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if (obj is Asn1OctetString)
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{
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return new DerUniversalString(((Asn1OctetString)obj).GetOctets());
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}
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throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
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}
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/**
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* return a Universal string from a tagged object.
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*
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* @param obj the tagged object holding the object we want
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* @param explicitly true if the object is meant to be explicitly
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* tagged false otherwise.
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* @exception ArgumentException if the tagged object cannot
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* be converted.
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*/
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public static DerUniversalString GetInstance(
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Asn1TaggedObject obj,
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bool explicitly)
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{
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return GetInstance(obj.GetObject());
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}
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/**
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* basic constructor - byte encoded string.
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*/
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public DerUniversalString(
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byte[] str)
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{
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if (str == null)
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throw new ArgumentNullException("str");
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this.str = str;
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}
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public override string GetString()
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{
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StringBuilder buffer = new StringBuilder("#");
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byte[] enc = GetDerEncoded();
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for (int i = 0; i != enc.Length; i++)
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{
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uint ubyte = enc[i];
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buffer.Append(table[(ubyte >> 4) & 0xf]);
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buffer.Append(table[enc[i] & 0xf]);
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}
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return buffer.ToString();
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}
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public byte[] GetOctets()
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{
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return (byte[]) str.Clone();
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}
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internal override void Encode(
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DerOutputStream derOut)
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{
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derOut.WriteEncoded(Asn1Tags.UniversalString, this.str);
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}
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protected override bool Asn1Equals(
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Asn1Object asn1Object)
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{
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DerUniversalString other = asn1Object as DerUniversalString;
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if (other == null)
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return false;
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// return this.GetString().Equals(other.GetString());
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return Arrays.AreEqual(this.str, other.str);
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}
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}
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}
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