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Added: Create STD File, ReadData, WriteData

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This commit is contained in:
TheJoKlLa
2020-10-14 00:26:23 +02:00
parent 2c0db72f55
commit 2049e7eba3
32 changed files with 1867 additions and 1970 deletions
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44
NFC/Crypto/CRC/CRC16.cs Normal file
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using System;
namespace NFC.Crypto
{
/// <summary>
/// CRC16 for DESFire Card
/// </summary>
public class CRC16
{
public UInt16 Polynomial { get; } = 0x8408;
public UInt16 InitValue { get; } = 0x6363;
public UInt16 Calculate(byte[] data, UInt16 crc16)
{
for (int i = 0; i < data.Length; i++)
{
crc16 ^= data[i];
for (int b = 0; b < 8; b++)
{
bool b_Bit = (crc16 & 0x01) > 0;
crc16 >>= 1;
if (b_Bit)
{
crc16 ^= Polynomial;
}
}
}
return crc16;
}
public byte[] Calculate(params byte[][] data)
{
UInt16 crc16 = InitValue;
foreach(byte[] d in data)
{
crc16 = Calculate(d, crc16);
}
return BitConverter.GetBytes(crc16);
}
}
}

44
NFC/Crypto/CRC/CRC32.cs Normal file
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using System;
namespace NFC.Crypto
{
/// <summary>
/// CRC32 for DESFire Card
/// </summary>
public class CRC32
{
public UInt32 Polynomial { get; } = 0xEDB88320;
public UInt32 InitValue { get; } = 0xFFFFFFFF;
public UInt32 Calculate(byte[] data, UInt32 crc32)
{
for (int i = 0; i < data.Length; i++)
{
crc32 ^= data[i];
for (int b = 0; b < 8; b++)
{
bool b_Bit = (crc32 & 0x01) > 0;
crc32 >>= 1;
if (b_Bit)
{
crc32 ^= Polynomial;
}
}
}
return crc32;
}
public byte[] Calculate(params byte[][] data)
{
UInt32 crc32 = InitValue;
foreach(byte[] d in data)
{
crc32 = Calculate(d, crc32);
}
return BitConverter.GetBytes(crc32);
}
}
}