最近.net8 blazor auto大火, 我也玩了一下,发现ssr能用的代码 MD5 类在wasm是没法用的. 于是搜索了一下互联网,找到了一份代码,分享给大家.
我找到的帖子作者原话: 代码不是我的，但我确实稍微修改了它以使其与 System.Security.Cryptography.MD5 类更加一致。
public static class MD5
{
public static byte[] ComputeHash(byte[] input)
{
uint num = 1732584193u;
uint num2 = 4023233417u;
uint num3 = 2562383102u;
uint num4 = 271733878u;
int num5 = (56 - (input.Length + 1) % 64) % 64;
byte[] array = new byte[input.Length + 1 + num5 + 8];
Array.Copy(input, array, input.Length);
array[input.Length] = 128;
Array.Copy(BitConverter.GetBytes(input.Length * 8), 0, array, array.Length - 8, 4);
for (int i = 0; i < array.Length / 64; i++)
{
uint[] array2 = new uint[16];
for (int j = 0; j < 16; j++)
{
array2[j] = BitConverter.ToUInt32(array, i * 64 + j * 4);
}
uint num6 = num;
uint num7 = num2;
uint num8 = num3;
uint num9 = num4;
uint num10 = 0u;
uint num11 = 0u;
uint num12 = 0u;
while (true)
{
switch (num12)
{
case 0u:
case 1u:
case 2u:
case 3u:
case 4u:
case 5u:
case 6u:
case 7u:
case 8u:
case 9u:
case 10u:
case 11u:
case 12u:
case 13u:
case 14u:
case 15u:
num10 = num7 & num8 | ~num7 & num9;
num11 = num12;
goto IL_0138;
case 16u:
case 17u:
case 18u:
case 19u:
case 20u:
case 21u:
case 22u:
case 23u:
case 24u:
case 25u:
case 26u:
case 27u:
case 28u:
case 29u:
case 30u:
case 31u:
case 32u:
case 33u:
case 34u:
case 35u:
case 36u:
case 37u:
case 38u:
case 39u:
case 40u:
case 41u:
case 42u:
case 43u:
case 44u:
case 45u:
case 46u:
case 47u:
case 48u:
case 49u:
case 50u:
case 51u:
case 52u:
case 53u:
case 54u:
case 55u:
case 56u:
case 57u:
case 58u:
case 59u:
case 60u:
case 61u:
case 62u:
case 63u:
if (num12 >= 16 && num12 <= 31)
{
num10 = num9 & num7 | ~num9 & num8;
num11 = (5 * num12 + 1) % 16u;
}
else if (num12 >= 32 && num12 <= 47)
{
num10 = num7 ^ num8 ^ num9;
num11 = (3 * num12 + 5) % 16u;
}
else if (num12 >= 48)
{
num10 = num8 ^ (num7 | ~num9);
num11 = 7 * num12 % 16u;
}
goto IL_0138;
}
break;
IL_0138:
uint num13 = num9;
num9 = num8;
num8 = num7;
num7 += leftRotate(num6 + num10 + K[num12] + array2[num11], s[num12]);
num6 = num13;
num12++;
}
num += num6;
num2 += num7;
num3 += num8;
num4 += num9;
}
var hashBytes = new byte[16];
BitConverter.GetBytes(num).CopyTo(hashBytes, 0);
BitConverter.GetBytes(num2).CopyTo(hashBytes, 4);
BitConverter.GetBytes(num3).CopyTo(hashBytes, 8);
BitConverter.GetBytes(num4).CopyTo(hashBytes, 12);
return hashBytes;
}
public static string ComputeHashString(byte[] input) => string.Join("", ComputeHash(input).Select(o => o.ToString("x2")));
private static int[] s = new int[64]
{
7, 12, 17, 22, 7, 12, 17, 22, 7, 12,
17, 22, 7, 12, 17, 22, 5, 9, 14, 20,
5, 9, 14, 20, 5, 9, 14, 20, 5, 9,
14, 20, 4, 11, 16, 23, 4, 11, 16, 23,
4, 11, 16, 23, 4, 11, 16, 23, 6, 10,
15, 21, 6, 10, 15, 21, 6, 10, 15, 21,
6, 10, 15, 21
};
private static uint[] K = new uint[64]
{
3614090360u, 3905402710u, 606105819u, 3250441966u, 4118548399u, 1200080426u, 2821735955u, 4249261313u, 1770035416u, 2336552879u,
4294925233u, 2304563134u, 1804603682u, 4254626195u, 2792965006u, 1236535329u, 4129170786u, 3225465664u, 643717713u, 3921069994u,
3593408605u, 38016083u, 3634488961u, 3889429448u, 568446438u, 3275163606u, 4107603335u, 1163531501u, 2850285829u, 4243563512u,
1735328473u, 2368359562u, 4294588738u, 2272392833u, 1839030562u, 4259657740u, 2763975236u, 1272893353u, 4139469664u, 3200236656u,
681279174u, 3936430074u, 3572445317u, 76029189u, 3654602809u, 3873151461u, 530742520u, 3299628645u, 4096336452u, 1126891415u,
2878612391u, 4237533241u, 1700485571u, 2399980690u, 4293915773u, 2240044497u, 1873313359u, 4264355552u, 2734768916u, 1309151649u,
4149444226u, 3174756917u, 718787259u, 3951481745u
};
private static uint leftRotate(uint x, int c)
{
return x << c | x >> 32 - c;
}
}
不得不说,真香.
参考来源
https://stackoverflow.com/questions/76728300/any-net-md5-library-nuget-for-blazor-webassembly
标签：case,16,中手,Length,uint,num12,input,WASM,Blazor From： https://www.cnblogs.com/densen2014/p/17855463.html