scripts
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niko
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using System;
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namespace Mono.Security.Cryptography
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{
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// Token: 0x0200002D RID: 45
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public class MD2Managed : MD2
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{
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// Token: 0x060001E9 RID: 489 RVA: 0x0000C5EC File Offset: 0x0000A7EC
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public MD2Managed()
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{
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this.state = new byte[16];
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this.checksum = new byte[16];
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this.buffer = new byte[16];
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this.x = new byte[48];
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this.Initialize();
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}
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// Token: 0x060001EB RID: 491 RVA: 0x0000C658 File Offset: 0x0000A858
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private byte[] Padding(int nLength)
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{
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if (nLength > 0)
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{
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byte[] array = new byte[nLength];
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for (int i = 0; i < array.Length; i++)
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{
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array[i] = (byte)nLength;
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}
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return array;
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}
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return null;
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}
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// Token: 0x060001EC RID: 492 RVA: 0x0000C690 File Offset: 0x0000A890
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public override void Initialize()
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{
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this.count = 0;
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Array.Clear(this.state, 0, 16);
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Array.Clear(this.checksum, 0, 16);
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Array.Clear(this.buffer, 0, 16);
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Array.Clear(this.x, 0, 48);
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}
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// Token: 0x060001ED RID: 493 RVA: 0x0000C6DC File Offset: 0x0000A8DC
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protected override void HashCore(byte[] array, int ibStart, int cbSize)
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{
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int num = this.count;
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this.count = (num + cbSize) & 15;
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int num2 = 16 - num;
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int num3;
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if (cbSize >= num2)
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{
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Buffer.BlockCopy(array, ibStart, this.buffer, num, num2);
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this.MD2Transform(this.state, this.checksum, this.buffer, 0);
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num3 = num2;
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while (num3 + 15 < cbSize)
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{
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this.MD2Transform(this.state, this.checksum, array, num3);
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num3 += 16;
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}
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num = 0;
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}
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else
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{
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num3 = 0;
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}
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Buffer.BlockCopy(array, ibStart + num3, this.buffer, num, cbSize - num3);
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}
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// Token: 0x060001EE RID: 494 RVA: 0x0000C778 File Offset: 0x0000A978
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protected override byte[] HashFinal()
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{
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int num = this.count;
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int num2 = 16 - num;
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if (num2 > 0)
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{
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this.HashCore(this.Padding(num2), 0, num2);
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}
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this.HashCore(this.checksum, 0, 16);
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byte[] array = (byte[])this.state.Clone();
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this.Initialize();
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return array;
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}
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// Token: 0x060001EF RID: 495 RVA: 0x0000C7D0 File Offset: 0x0000A9D0
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private void MD2Transform(byte[] state, byte[] checksum, byte[] block, int index)
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{
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Buffer.BlockCopy(state, 0, this.x, 0, 16);
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Buffer.BlockCopy(block, index, this.x, 16, 16);
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for (int i = 0; i < 16; i++)
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{
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this.x[i + 32] = state[i] ^ block[index + i];
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}
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int num = 0;
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for (int j = 0; j < 18; j++)
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{
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for (int k = 0; k < 48; k++)
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{
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byte[] array = this.x;
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int num2 = k;
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num = (int)(array[num2] ^= MD2Managed.PI_SUBST[num]);
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}
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num = (num + j) & 255;
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}
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Buffer.BlockCopy(this.x, 0, state, 0, 16);
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num = (int)checksum[15];
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for (int l = 0; l < 16; l++)
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{
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int num3 = l;
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num = (int)(checksum[num3] ^= MD2Managed.PI_SUBST[(int)block[index + l] ^ num]);
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}
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}
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// Token: 0x040000C9 RID: 201
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private byte[] state;
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// Token: 0x040000CA RID: 202
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private byte[] checksum;
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// Token: 0x040000CB RID: 203
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private byte[] buffer;
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// Token: 0x040000CC RID: 204
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private int count;
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// Token: 0x040000CD RID: 205
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private byte[] x;
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// Token: 0x040000CE RID: 206
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private static readonly byte[] PI_SUBST = new byte[]
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{
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41, 46, 67, 201, 162, 216, 124, 1, 61, 54,
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84, 161, 236, 240, 6, 19, 98, 167, 5, 243,
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192, 199, 115, 140, 152, 147, 43, 217, 188, 76,
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130, 202, 30, 155, 87, 60, 253, 212, 224, 22,
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103, 66, 111, 24, 138, 23, 229, 18, 190, 78,
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196, 214, 218, 158, 222, 73, 160, 251, 245, 142,
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187, 47, 238, 122, 169, 104, 121, 145, 21, 178,
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7, 63, 148, 194, 16, 137, 11, 34, 95, 33,
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128, 127, 93, 154, 90, 144, 50, 39, 53, 62,
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204, 231, 191, 247, 151, 3, byte.MaxValue, 25, 48, 179,
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72, 165, 181, 209, 215, 94, 146, 42, 172, 86,
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170, 198, 79, 184, 56, 210, 150, 164, 125, 182,
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118, 252, 107, 226, 156, 116, 4, 241, 69, 157,
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112, 89, 100, 113, 135, 32, 134, 91, 207, 101,
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230, 45, 168, 2, 27, 96, 37, 173, 174, 176,
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185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
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85, 71, 163, 35, 221, 81, 175, 58, 195, 92,
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249, 206, 186, 197, 234, 38, 44, 83, 13, 110,
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133, 40, 132, 9, 211, 223, 205, 244, 65, 129,
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77, 82, 106, 220, 55, 200, 108, 193, 171, 250,
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36, 225, 123, 8, 12, 189, 177, 74, 120, 136,
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149, 139, 227, 99, 232, 109, 233, 203, 213, 254,
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59, 0, 29, 57, 242, 239, 183, 14, 102, 88,
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208, 228, 166, 119, 114, 248, 235, 117, 75, 10,
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49, 68, 80, 180, 143, 237, 31, 26, 219, 153,
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141, 51, 159, 17, 131, 20
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};
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}
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}
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