75 lines
1.9 KiB
C#
75 lines
1.9 KiB
C#
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using System;
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using System.Text;
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namespace GemCard
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{
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/// <summary>
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/// This class represents the APDU response sent by the card
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/// </summary>
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public class APDUResponse
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{
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/// <summary>
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/// Status bytes length
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/// </summary>
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public const int SW_LENGTH = 2;
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/// <summary>
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/// Response data. Contains the data sent by the card minus the 2 status bytes (SW1, SW2)
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/// null if no data were sent by the card
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/// </summary>
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public byte[] Data;
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public byte SW1;
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public byte SW2;
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/// <summary>
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/// Status get property
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/// </summary>
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public ushort Status
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{
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get { return (ushort)(((short)SW1 << 8) + (short)SW2); }
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}
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/// <summary>
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/// Constructor from the byte data sent back by the card
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/// </summary>
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/// <param name="baData">Buffer of data from the card</param>
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public APDUResponse(byte[] baData)
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{
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if (baData.Length > SW_LENGTH)
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{
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Data = new byte[baData.Length - SW_LENGTH];
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for (int nI = 0; nI < baData.Length - SW_LENGTH; nI++)
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{
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this.Data[nI] = baData[nI];
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}
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}
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this.SW1 = baData[baData.Length - 2];
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this.SW2 = baData[baData.Length - 1];
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}
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/// <summary>
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/// Overrides the ToString method to format to a string the APDUResponse object
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/// </summary>
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/// <returns></returns>
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public override string ToString()
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{
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if (Data != null)
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{
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StringBuilder sData = new StringBuilder(Data.Length * 2);
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for (int nI = 0; nI < Data.Length; nI++)
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{
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sData.AppendFormat("{0:X02}", Data[nI]);
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}
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return sData.ToString();
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}
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else
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{
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return string.Empty;
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}
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}
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}
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}
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