internal static byte[] GetHashFinalBlock(byte[] input, int ibStart, int cbSize, ABCDStruct ABCD, long len)
{
byte[] destinationArray = new byte[0x40];
byte[] bytes = BitConverter.GetBytes(len);
Array.Copy(input, ibStart, destinationArray, 0, cbSize);
destinationArray[cbSize] = 0x80;
if (cbSize <= 0x38)
{
Array.Copy(bytes, 0, destinationArray, 0x38, 8);
GetHashBlock(destinationArray, ref ABCD, 0);
}
else
{
GetHashBlock(destinationArray, ref ABCD, 0);
destinationArray = new byte[0x40];
Array.Copy(bytes, 0, destinationArray, 0x38, 8);
GetHashBlock(destinationArray, ref ABCD, 0);
}
byte[] buffer3 = new byte[0x10];
Array.Copy(BitConverter.GetBytes(ABCD.A), 0, buffer3, 0, 4);
Array.Copy(BitConverter.GetBytes(ABCD.B), 0, buffer3, 4, 4);
Array.Copy(BitConverter.GetBytes(ABCD.C), 0, buffer3, 8, 4);
Array.Copy(BitConverter.GetBytes(ABCD.D), 0, buffer3, 12, 4);
return(buffer3);
}
internal static void GetHashBlock(byte[] input, ref ABCDStruct ABCDValue, int ibStart)
{
uint[] numArray = Converter(input, ibStart);
uint a = ABCDValue.A;
uint b = ABCDValue.B;
uint c = ABCDValue.C;
uint d = ABCDValue.D;
a = r1(a, b, c, d, numArray[0], 7, 0xd76aa478);
d = r1(d, a, b, c, numArray[1], 12, 0xe8c7b756);
c = r1(c, d, a, b, numArray[2], 0x11, 0x242070db);
b = r1(b, c, d, a, numArray[3], 0x16, 0xc1bdceee);
a = r1(a, b, c, d, numArray[4], 7, 0xf57c0faf);
d = r1(d, a, b, c, numArray[5], 12, 0x4787c62a);
c = r1(c, d, a, b, numArray[6], 0x11, 0xa8304613);
b = r1(b, c, d, a, numArray[7], 0x16, 0xfd469501);
a = r1(a, b, c, d, numArray[8], 7, 0x698098d8);
d = r1(d, a, b, c, numArray[9], 12, 0x8b44f7af);
c = r1(c, d, a, b, numArray[10], 0x11, 0xffff5bb1);
b = r1(b, c, d, a, numArray[11], 0x16, 0x895cd7be);
a = r1(a, b, c, d, numArray[12], 7, 0x6b901122);
d = r1(d, a, b, c, numArray[13], 12, 0xfd987193);
c = r1(c, d, a, b, numArray[14], 0x11, 0xa679438e);
b = r1(b, c, d, a, numArray[15], 0x16, 0x49b40821);
a = r2(a, b, c, d, numArray[1], 5, 0xf61e2562);
d = r2(d, a, b, c, numArray[6], 9, 0xc040b340);
c = r2(c, d, a, b, numArray[11], 14, 0x265e5a51);
b = r2(b, c, d, a, numArray[0], 20, 0xe9b6c7aa);
a = r2(a, b, c, d, numArray[5], 5, 0xd62f105d);
d = r2(d, a, b, c, numArray[10], 9, 0x2441453);
c = r2(c, d, a, b, numArray[15], 14, 0xd8a1e681);
b = r2(b, c, d, a, numArray[4], 20, 0xe7d3fbc8);
a = r2(a, b, c, d, numArray[9], 5, 0x21e1cde6);
d = r2(d, a, b, c, numArray[14], 9, 0xc33707d6);
c = r2(c, d, a, b, numArray[3], 14, 0xf4d50d87);
b = r2(b, c, d, a, numArray[8], 20, 0x455a14ed);
a = r2(a, b, c, d, numArray[13], 5, 0xa9e3e905);
d = r2(d, a, b, c, numArray[2], 9, 0xfcefa3f8);
c = r2(c, d, a, b, numArray[7], 14, 0x676f02d9);
b = r2(b, c, d, a, numArray[12], 20, 0x8d2a4c8a);
a = r3(a, b, c, d, numArray[5], 4, 0xfffa3942);
d = r3(d, a, b, c, numArray[8], 11, 0x8771f681);
c = r3(c, d, a, b, numArray[11], 0x10, 0x6d9d6122);
b = r3(b, c, d, a, numArray[14], 0x17, 0xfde5380c);
a = r3(a, b, c, d, numArray[1], 4, 0xa4beea44);
d = r3(d, a, b, c, numArray[4], 11, 0x4bdecfa9);
c = r3(c, d, a, b, numArray[7], 0x10, 0xf6bb4b60);
b = r3(b, c, d, a, numArray[10], 0x17, 0xbebfbc70);
a = r3(a, b, c, d, numArray[13], 4, 0x289b7ec6);
d = r3(d, a, b, c, numArray[0], 11, 0xeaa127fa);
c = r3(c, d, a, b, numArray[3], 0x10, 0xd4ef3085);
b = r3(b, c, d, a, numArray[6], 0x17, 0x4881d05);
a = r3(a, b, c, d, numArray[9], 4, 0xd9d4d039);
d = r3(d, a, b, c, numArray[12], 11, 0xe6db99e5);
c = r3(c, d, a, b, numArray[15], 0x10, 0x1fa27cf8);
b = r3(b, c, d, a, numArray[2], 0x17, 0xc4ac5665);
a = r4(a, b, c, d, numArray[0], 6, 0xf4292244);
d = r4(d, a, b, c, numArray[7], 10, 0x432aff97);
c = r4(c, d, a, b, numArray[14], 15, 0xab9423a7);
b = r4(b, c, d, a, numArray[5], 0x15, 0xfc93a039);
a = r4(a, b, c, d, numArray[12], 6, 0x655b59c3);
d = r4(d, a, b, c, numArray[3], 10, 0x8f0ccc92);
c = r4(c, d, a, b, numArray[10], 15, 0xffeff47d);
b = r4(b, c, d, a, numArray[1], 0x15, 0x85845dd1);
a = r4(a, b, c, d, numArray[8], 6, 0x6fa87e4f);
d = r4(d, a, b, c, numArray[15], 10, 0xfe2ce6e0);
c = r4(c, d, a, b, numArray[6], 15, 0xa3014314);
b = r4(b, c, d, a, numArray[13], 0x15, 0x4e0811a1);
a = r4(a, b, c, d, numArray[4], 6, 0xf7537e82);
d = r4(d, a, b, c, numArray[11], 10, 0xbd3af235);
c = r4(c, d, a, b, numArray[2], 15, 0x2ad7d2bb);
b = r4(b, c, d, a, numArray[9], 0x15, 0xeb86d391);
ABCDValue.A = a + ABCDValue.A;
ABCDValue.B = b + ABCDValue.B;
ABCDValue.C = c + ABCDValue.C;
ABCDValue.D = d + ABCDValue.D;
}
