| static private GetHashFinalBlock ( byte input, int ibStart, int cbSize, ABCDStruct ABCD, System.Int64 len ) : byte[] | ||
| input | byte | |
| ibStart | int | |
| cbSize | int | |
| ABCD | ABCDStruct | |
| len | System.Int64 | |
| return | byte[] | |
/// <summary>
/// Return an MD5 hash for the provided parameters
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static byte[] GetHash(byte[] input)
{
if (null == input)
{
throw new System.ArgumentNullException("input", "Unable to calculate hash over null input data");
}
//Initial values defined in RFC 1321
ABCDStruct abcd = new ABCDStruct();
abcd.A = 0x67452301;
abcd.B = 0xefcdab89;
abcd.C = 0x98badcfe;
abcd.D = 0x10325476;
//We pass in the input array by block, the final block of data must be handled specially for padding & length embedding
int startIndex = 0;
while (startIndex <= input.Length - 64)
{
MD5Core.GetHashBlock(input, ref abcd, startIndex);
startIndex += 64;
}
// The final data block.
return(MD5Core.GetHashFinalBlock(input, startIndex, input.Length - startIndex, abcd, (Int64)input.Length * 8));
}
/// <summary>
/// Get the final hash
/// </summary>
/// <returns></returns>
protected override byte[] HashFinal()
{
base.HashValue = MD5Core.GetHashFinalBlock(_data, 0, _dataSize, _abcd, _totalLength * 8);
return(base.HashValue);
}
