System.Security.Cryptography.HMACSHA1.Sha1.ProcessMessageBlock C# (CSharp) Метод

			void ProcessMessageBlock(Context ctx)
			{
				uint[] w = new uint[80];

				for (int t = 0; t < 16; t++)
				{
					w[t] |= (uint)ctx.MessageBlock[t * 4 + 0] << 24;
					w[t] |= (uint)ctx.MessageBlock[t * 4 + 1] << 16;
					w[t] |= (uint)ctx.MessageBlock[t * 4 + 2] << 08;
					w[t] |= (uint)ctx.MessageBlock[t * 4 + 3];
				}

				for (int t = 16; t < 80; t++)
					w[t] = CircularShift(1, w[t - 3] ^ w[t - 8] ^ w[t - 14] ^ w[t - 16]);

				ctx.A = ctx.IntermediateHash[0];
				ctx.B = ctx.IntermediateHash[1];
				ctx.C = ctx.IntermediateHash[2];
				ctx.D = ctx.IntermediateHash[3];
				ctx.E = ctx.IntermediateHash[4];

				for (int t = 0; t < 20; t++)
					RotateWordBuffers(ctx, (b, c, d) => (b & c) | ((~b) & d), w[t], K0);

				for (int t = 20; t < 40; t++)
					RotateWordBuffers(ctx, (b, c, d) => b ^ c ^ d, w[t], K1);

				for (int t = 40; t < 60; t++)
					RotateWordBuffers(ctx, (b, c, d) => (b & c) | (b & d) | (c & d), w[t], K2);

				for (int t = 60; t < 80; t++)
					RotateWordBuffers(ctx, (b, c, d) => b ^ c ^ d, w[t], K3);

				ctx.IntermediateHash[0] += ctx.A;
				ctx.IntermediateHash[1] += ctx.B;
				ctx.IntermediateHash[2] += ctx.C;
				ctx.IntermediateHash[3] += ctx.D;
				ctx.IntermediateHash[4] += ctx.E;

				ctx.MessageBlockIndex = 0;
			}