private static byte[] GetHash(byte[] input)
{
if (input == null)
{
throw new ArgumentNullException("input", "Unable to calculate hash over null input data");
}
ABCDStruct aBCD = default(ABCDStruct);
aBCD.A = 1732584193u;
aBCD.B = 4023233417u;
aBCD.C = 2562383102u;
aBCD.D = 271733878u;
int i;
for (i = 0; i <= input.Length - 64; i += 64)
{
MD5Util.GetHashBlock(input, ref aBCD, i);
}
return(MD5Util.GetHashFinalBlock(input, i, input.Length - i, aBCD, (long)input.Length * 8L));
}
internal static string GetHashString(string input)
{
return(MD5Util.GetHashString(input, new UTF8Encoding()));
}
private static uint r4(uint a, uint b, uint c, uint d, uint x, int s, uint t)
{
return(b + MD5Util.LSR(a + (c ^ (b | (d ^ 4294967295u))) + x + t, s));
}
private static byte[] GetHash(string input)
{
return(MD5Util.GetHash(input, new UTF8Encoding()));
}
private static uint r3(uint a, uint b, uint c, uint d, uint x, int s, uint t)
{
return(b + MD5Util.LSR(a + (b ^ c ^ d) + x + t, s));
}
private static uint r2(uint a, uint b, uint c, uint d, uint x, int s, uint t)
{
return(b + MD5Util.LSR(a + ((b & d) | (c & (d ^ 4294967295u))) + x + t, s));
}
private static uint r1(uint a, uint b, uint c, uint d, uint x, int s, uint t)
{
return(b + MD5Util.LSR(a + ((b & c) | ((b ^ 4294967295u) & d)) + x + t, s));
}
internal static void GetHashBlock(byte[] input, ref ABCDStruct ABCDValue, int ibStart)
{
uint[] array = MD5Util.Converter(input, ibStart);
uint num = ABCDValue.A;
uint num2 = ABCDValue.B;
uint num3 = ABCDValue.C;
uint num4 = ABCDValue.D;
num = MD5Util.r1(num, num2, num3, num4, array[0], 7, 3614090360u);
num4 = MD5Util.r1(num4, num, num2, num3, array[1], 12, 3905402710u);
num3 = MD5Util.r1(num3, num4, num, num2, array[2], 17, 606105819u);
num2 = MD5Util.r1(num2, num3, num4, num, array[3], 22, 3250441966u);
num = MD5Util.r1(num, num2, num3, num4, array[4], 7, 4118548399u);
num4 = MD5Util.r1(num4, num, num2, num3, array[5], 12, 1200080426u);
num3 = MD5Util.r1(num3, num4, num, num2, array[6], 17, 2821735955u);
num2 = MD5Util.r1(num2, num3, num4, num, array[7], 22, 4249261313u);
num = MD5Util.r1(num, num2, num3, num4, array[8], 7, 1770035416u);
num4 = MD5Util.r1(num4, num, num2, num3, array[9], 12, 2336552879u);
num3 = MD5Util.r1(num3, num4, num, num2, array[10], 17, 4294925233u);
num2 = MD5Util.r1(num2, num3, num4, num, array[11], 22, 2304563134u);
num = MD5Util.r1(num, num2, num3, num4, array[12], 7, 1804603682u);
num4 = MD5Util.r1(num4, num, num2, num3, array[13], 12, 4254626195u);
num3 = MD5Util.r1(num3, num4, num, num2, array[14], 17, 2792965006u);
num2 = MD5Util.r1(num2, num3, num4, num, array[15], 22, 1236535329u);
num = MD5Util.r2(num, num2, num3, num4, array[1], 5, 4129170786u);
num4 = MD5Util.r2(num4, num, num2, num3, array[6], 9, 3225465664u);
num3 = MD5Util.r2(num3, num4, num, num2, array[11], 14, 643717713u);
num2 = MD5Util.r2(num2, num3, num4, num, array[0], 20, 3921069994u);
num = MD5Util.r2(num, num2, num3, num4, array[5], 5, 3593408605u);
num4 = MD5Util.r2(num4, num, num2, num3, array[10], 9, 38016083u);
num3 = MD5Util.r2(num3, num4, num, num2, array[15], 14, 3634488961u);
num2 = MD5Util.r2(num2, num3, num4, num, array[4], 20, 3889429448u);
num = MD5Util.r2(num, num2, num3, num4, array[9], 5, 568446438u);
num4 = MD5Util.r2(num4, num, num2, num3, array[14], 9, 3275163606u);
num3 = MD5Util.r2(num3, num4, num, num2, array[3], 14, 4107603335u);
num2 = MD5Util.r2(num2, num3, num4, num, array[8], 20, 1163531501u);
num = MD5Util.r2(num, num2, num3, num4, array[13], 5, 2850285829u);
num4 = MD5Util.r2(num4, num, num2, num3, array[2], 9, 4243563512u);
num3 = MD5Util.r2(num3, num4, num, num2, array[7], 14, 1735328473u);
num2 = MD5Util.r2(num2, num3, num4, num, array[12], 20, 2368359562u);
num = MD5Util.r3(num, num2, num3, num4, array[5], 4, 4294588738u);
num4 = MD5Util.r3(num4, num, num2, num3, array[8], 11, 2272392833u);
num3 = MD5Util.r3(num3, num4, num, num2, array[11], 16, 1839030562u);
num2 = MD5Util.r3(num2, num3, num4, num, array[14], 23, 4259657740u);
num = MD5Util.r3(num, num2, num3, num4, array[1], 4, 2763975236u);
num4 = MD5Util.r3(num4, num, num2, num3, array[4], 11, 1272893353u);
num3 = MD5Util.r3(num3, num4, num, num2, array[7], 16, 4139469664u);
num2 = MD5Util.r3(num2, num3, num4, num, array[10], 23, 3200236656u);
num = MD5Util.r3(num, num2, num3, num4, array[13], 4, 681279174u);
num4 = MD5Util.r3(num4, num, num2, num3, array[0], 11, 3936430074u);
num3 = MD5Util.r3(num3, num4, num, num2, array[3], 16, 3572445317u);
num2 = MD5Util.r3(num2, num3, num4, num, array[6], 23, 76029189u);
num = MD5Util.r3(num, num2, num3, num4, array[9], 4, 3654602809u);
num4 = MD5Util.r3(num4, num, num2, num3, array[12], 11, 3873151461u);
num3 = MD5Util.r3(num3, num4, num, num2, array[15], 16, 530742520u);
num2 = MD5Util.r3(num2, num3, num4, num, array[2], 23, 3299628645u);
num = MD5Util.r4(num, num2, num3, num4, array[0], 6, 4096336452u);
num4 = MD5Util.r4(num4, num, num2, num3, array[7], 10, 1126891415u);
num3 = MD5Util.r4(num3, num4, num, num2, array[14], 15, 2878612391u);
num2 = MD5Util.r4(num2, num3, num4, num, array[5], 21, 4237533241u);
num = MD5Util.r4(num, num2, num3, num4, array[12], 6, 1700485571u);
num4 = MD5Util.r4(num4, num, num2, num3, array[3], 10, 2399980690u);
num3 = MD5Util.r4(num3, num4, num, num2, array[10], 15, 4293915773u);
num2 = MD5Util.r4(num2, num3, num4, num, array[1], 21, 2240044497u);
num = MD5Util.r4(num, num2, num3, num4, array[8], 6, 1873313359u);
num4 = MD5Util.r4(num4, num, num2, num3, array[15], 10, 4264355552u);
num3 = MD5Util.r4(num3, num4, num, num2, array[6], 15, 2734768916u);
num2 = MD5Util.r4(num2, num3, num4, num, array[13], 21, 1309151649u);
num = MD5Util.r4(num, num2, num3, num4, array[4], 6, 4149444226u);
num4 = MD5Util.r4(num4, num, num2, num3, array[11], 10, 3174756917u);
num3 = MD5Util.r4(num3, num4, num, num2, array[2], 15, 718787259u);
num2 = MD5Util.r4(num2, num3, num4, num, array[9], 21, 3951481745u);
ABCDValue.A = num + ABCDValue.A;
ABCDValue.B = num2 + ABCDValue.B;
ABCDValue.C = num3 + ABCDValue.C;
ABCDValue.D = num4 + ABCDValue.D;
}
internal static string getCheckSummary(string content, string sdkVersion, string appID)
{
string input = WXApiImplV1.trimToEmpty(content) + WXApiImplV1.trimToEmpty(sdkVersion) + WXApiImplV1.trimToEmpty(appID);
return(MD5Util.GetHashString(input));
}