public CRC32(InitialCrcValue val)
: base(val)
{
uint poly = 0xedb88320;
table = new uint[256];
uint temp = 0;
for (uint i = 0; i < table.Length; ++i)
{
temp = i;
for (int j = 8; j > 0; --j)
{
if ((temp & 1) == 1)
{
temp = (uint)((temp >> 1) ^ poly);
}
else
{
temp >>= 1;
}
}
table[i] = temp;
}
}
public CDMACRC(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
int num5 = this.table.Length - 1;
for (int i = 0; i <= num5; i++)
{
ushort num2 = 0;
ushort num = (ushort)(i << 8);
int num4 = 0;
do
{
if (((num2 ^ num) & 0x8000) != 0)
{
num2 = (ushort)(((ushort)(num2 << 1)) ^ 0x1021);
}
else
{
num2 = (ushort)(num2 << 1);
}
num = (ushort)(num << 1);
num4++;
}while (num4 <= 7);
this.table[i] = num2;
}
}
public CRC16(InitialCrcValue val)
: base(val)
{
ushort value;
ushort temp;
for (ushort i = 0; i < table.Length; ++i)
{
value = 0;
temp = i;
for (byte j = 0; j < 8; ++j)
{
if (((value ^ temp) & 0x0001) != 0)
{
value = (ushort)((value >> 1) ^ polynomial);
}
else
{
value >>= 1;
}
temp >>= 1;
}
table[i] = value;
}
}
public CRC16CCITT(InitialCrcValue val)
: base(val)
{
this.initialValue = (ushort)val;
ushort temp, a;
for (int i = 0; i < table.Length; ++i)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; ++j)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
/// <summary>
/// CRC16 - CCITT
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static string CRC16C(byte[] data, InitialCrcValue icv)
{
ushort[] tab = new ushort[256];
ushort t = 0, a = 0, crc = (ushort)icv;
for (int i = 0; i < 256; i++)
{
t = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((t ^ a) & 0x8000) != 0)
{
t = (ushort)((t << 1) ^ 0x1021);
}
else
{
t <<= 1;
}
a <<= 1;
}
tab[i] = t;
}
for (int i = 0; i < data.Length; i++)
{
crc = (ushort)((crc << 8) ^ tab[((crc >> 8) ^ (0xFF & data[i]))]);
}
return(Utils.Bin2AHex(BitConverter.GetBytes(crc)));
}
public Crc16Ccitt(InitialCrcValue pinitialValue)
{
initialValue = (ushort)pinitialValue;
ushort temp, a;
for (int i = 0; i < table.Length; i++)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
public Crc16Ccitt(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
if (table == null)
{
table = new ushort[256];
ushort temp, a;
for (int i = 0; i < table.Length; i++)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
}
public Crc16Ccitt(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
if (table == null)
{
table = new ushort[256];
ushort temp, a;
for (int i = 0; i < table.Length; i++)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="type">位数</param>
/// <param name="initialValue">初始值</param>
public CrcCcitt(CrcType type, InitialCrcValue initialValue = InitialCrcValue.Zeros)
{
crcType = type;
if (crcType == CrcType.CRC_16)
{
initialCrcValue = initialValue;
this.initialValue = (ushort)initialValue;
ushort temp, a;
for (int i = 0; i < table.Length; i++)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ polynominal);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
}
public void Crc16Ccitt(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
ushort temp, a;
for(int i = 0; i < table.Length; ++i) {
temp = 0;
a = (ushort)(i << 8);
for(int j = 0; j < 8; ++j) {
if(((temp ^ a) & 0x8000) != 0) {
temp = (ushort)((temp << 1) ^ poly);
}else{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
public Crc16Ccitt(InitialCrcValue initialValue)
{
_initialValue = (ushort)initialValue;
for (int i = 0; i < _table.Length; i++)
{
ushort temp = 0;
ushort a = (ushort)(i << 8);
for (int j = 0; j < 8; ++j)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ Poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
_table[i] = temp;
}
}
public Crc16Ccitt(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
for (int i = 0; i < this.table.Length; i++)
{
ushort temp = 0;
ushort a = (ushort)(i << 8);
for (int j = 0; j < 8; j++)
{
if (((temp ^ a) & 32768) != 0)
{
temp = (ushort)((int)temp << 1 ^ 4129);
}
else
{
temp = (ushort)(temp << 1);
}
a = (ushort)(a << 1);
}
this.table[i] = temp;
}
}
public CRC16_CCITT(InitialCrcValue initialValue)
{
this.InitialValue = initialValue;
for (int i = 0; i <= this.table.Length - 1; i++)
{
UInt16 temp = 0;
UInt16 a = (UInt16)(i << 8);
for (int j = 0; j <= 7; j++)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (UInt16)((temp << 1) ^ poly);
}
else
{
temp = (UInt16)(temp << 1);
}
a = (UInt16)(a << 1);
}
this.table[i] = temp;
}
}
public CRC32(InitialCrcValue val)
: base(val)
{
uint poly = 0xedb88320;
table = new uint[256];
uint temp = 0;
for (uint i = 0; i < table.Length; ++i)
{
temp = i;
for (int j = 8; j > 0; --j)
{
if ((temp & 1) == 1)
{
temp = (uint)((temp >> 1) ^ poly);
}
else
{
temp >>= 1;
}
}
table[i] = temp;
}
}
public CRC16(InitialCrcValue val)
: base(val)
{
ushort value;
ushort temp;
for (ushort i = 0; i < table.Length; ++i)
{
value = 0;
temp = i;
for (byte j = 0; j < 8; ++j)
{
if (((value ^ temp) & 0x0001) != 0)
{
value = (ushort)((value >> 1) ^ polynomial);
}
else
{
value >>= 1;
}
temp >>= 1;
}
table[i] = value;
}
}
public Crc16(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
ushort temp, a;
for (int i = 0; i < table.Length; ++i)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; ++j)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
public CRC16CCITT(InitialCrcValue val)
: base(val)
{
this.initialValue = (ushort)val;
ushort temp, a;
for (int i = 0; i < table.Length; ++i)
{
temp = 0;
a = (ushort)(i << 8);
for (int j = 0; j < 8; ++j)
{
if (((temp ^ a) & 0x8000) != 0)
{
temp = (ushort)((temp << 1) ^ poly);
}
else
{
temp <<= 1;
}
a <<= 1;
}
table[i] = temp;
}
}
public Crc16(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
}
public CRC16CCITT(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
GenTable((ushort)initialValue, (ushort)4219);
}
/// <summary>
/// CRC16 - CCITT
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static string CRC16C(string data, InitialCrcValue icv)
{
return(CRC16C(Utils.AHex2Bin(data), icv));
}
public CRC(InitialCrcValue val)
{
}
public CRC16CCITT(InitialCrcValue initialValue)
{
this.initialValue = (ushort)initialValue;
GenTable((ushort)initialValue, (ushort)4219);
}
public CRC(InitialCrcValue val)
{
}
public CRC8(InitialCrcValue val)
: base(val)
{
}
