namespace Renci.SshNet.Security.Chaos.NaCl.Internal.Salsa { internal class Salsa20 { public const uint SalsaConst0 = 1634760805; public const uint SalsaConst1 = 857760878; public const uint SalsaConst2 = 2036477234; public const uint SalsaConst3 = 1797285236; internal static void HSalsa20(byte[] output, int outputOffset, byte[] key, int keyOffset, byte[] nonce, int nonceOffset) { Array16<uint> output2 = default(Array16<uint>); output2.x0 = 1634760805; output2.x1 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset); output2.x2 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 4); output2.x3 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 8); output2.x4 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 12); output2.x5 = 857760878; output2.x6 = ByteIntegerConverter.LoadLittleEndian32(nonce, nonceOffset); output2.x7 = ByteIntegerConverter.LoadLittleEndian32(nonce, nonceOffset + 4); output2.x8 = ByteIntegerConverter.LoadLittleEndian32(nonce, nonceOffset + 8); output2.x9 = ByteIntegerConverter.LoadLittleEndian32(nonce, nonceOffset + 12); output2.x10 = 2036477234; output2.x11 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 16); output2.x12 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 20); output2.x13 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 24); output2.x14 = ByteIntegerConverter.LoadLittleEndian32(key, keyOffset + 28); output2.x15 = 1797285236; SalsaCore.HSalsa(out output2, ref output2, 20); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset, output2.x0); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 4, output2.x5); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 8, output2.x10); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 12, output2.x15); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 16, output2.x6); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 20, output2.x7); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 24, output2.x8); ByteIntegerConverter.StoreLittleEndian32(output, outputOffset + 28, output2.x9); } } }