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@@ -2,288 +2,285 @@
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namespace Renci.SshNet.Security.Cryptography.Ciphers
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{
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- /// <summary>
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- /// Implements DES cipher algorithm.
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- /// </summary>
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- public class DesCipher : BlockCipher
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- {
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- private int[] _encryptionKey;
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-
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- private int[] _decryptionKey;
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-
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- #region Static tables
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-
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- private static readonly short[] bytebit =
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- {
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- 128, 64, 32, 16, 8, 4, 2, 1
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- };
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-
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- private static readonly int[] bigbyte =
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- {
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- 0x800000, 0x400000, 0x200000, 0x100000,
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- 0x80000, 0x40000, 0x20000, 0x10000,
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- 0x8000, 0x4000, 0x2000, 0x1000,
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- 0x800, 0x400, 0x200, 0x100,
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- 0x80, 0x40, 0x20, 0x10,
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- 0x8, 0x4, 0x2, 0x1
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- };
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-
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- /*
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- * Use the key schedule specified in the Standard (ANSI X3.92-1981).
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- */
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- private static readonly byte[] pc1 =
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- {
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- 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
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- 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
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- 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
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- 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3
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- };
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-
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- private static readonly byte[] totrot =
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- {
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- 1, 2, 4, 6, 8, 10, 12, 14,
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- 15, 17, 19, 21, 23, 25, 27, 28
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- };
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-
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- private static readonly byte[] pc2 =
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- {
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- 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
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- 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
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- 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
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- 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31
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- };
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-
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- private static readonly uint[] SP1 =
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- {
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- 0x01010400, 0x00000000, 0x00010000, 0x01010404,
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- 0x01010004, 0x00010404, 0x00000004, 0x00010000,
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- 0x00000400, 0x01010400, 0x01010404, 0x00000400,
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- 0x01000404, 0x01010004, 0x01000000, 0x00000004,
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- 0x00000404, 0x01000400, 0x01000400, 0x00010400,
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- 0x00010400, 0x01010000, 0x01010000, 0x01000404,
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- 0x00010004, 0x01000004, 0x01000004, 0x00010004,
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- 0x00000000, 0x00000404, 0x00010404, 0x01000000,
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- 0x00010000, 0x01010404, 0x00000004, 0x01010000,
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- 0x01010400, 0x01000000, 0x01000000, 0x00000400,
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- 0x01010004, 0x00010000, 0x00010400, 0x01000004,
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- 0x00000400, 0x00000004, 0x01000404, 0x00010404,
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- 0x01010404, 0x00010004, 0x01010000, 0x01000404,
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- 0x01000004, 0x00000404, 0x00010404, 0x01010400,
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- 0x00000404, 0x01000400, 0x01000400, 0x00000000,
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- 0x00010004, 0x00010400, 0x00000000, 0x01010004
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- };
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-
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- private static readonly uint[] SP2 =
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- {
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- 0x80108020, 0x80008000, 0x00008000, 0x00108020,
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- 0x00100000, 0x00000020, 0x80100020, 0x80008020,
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- 0x80000020, 0x80108020, 0x80108000, 0x80000000,
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- 0x80008000, 0x00100000, 0x00000020, 0x80100020,
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- 0x00108000, 0x00100020, 0x80008020, 0x00000000,
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- 0x80000000, 0x00008000, 0x00108020, 0x80100000,
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- 0x00100020, 0x80000020, 0x00000000, 0x00108000,
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- 0x00008020, 0x80108000, 0x80100000, 0x00008020,
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- 0x00000000, 0x00108020, 0x80100020, 0x00100000,
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- 0x80008020, 0x80100000, 0x80108000, 0x00008000,
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- 0x80100000, 0x80008000, 0x00000020, 0x80108020,
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- 0x00108020, 0x00000020, 0x00008000, 0x80000000,
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- 0x00008020, 0x80108000, 0x00100000, 0x80000020,
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- 0x00100020, 0x80008020, 0x80000020, 0x00100020,
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- 0x00108000, 0x00000000, 0x80008000, 0x00008020,
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- 0x80000000, 0x80100020, 0x80108020, 0x00108000
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- };
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-
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- private static readonly uint[] SP3 =
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- {
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- 0x00000208, 0x08020200, 0x00000000, 0x08020008,
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- 0x08000200, 0x00000000, 0x00020208, 0x08000200,
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- 0x00020008, 0x08000008, 0x08000008, 0x00020000,
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- 0x08020208, 0x00020008, 0x08020000, 0x00000208,
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- 0x08000000, 0x00000008, 0x08020200, 0x00000200,
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- 0x00020200, 0x08020000, 0x08020008, 0x00020208,
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- 0x08000208, 0x00020200, 0x00020000, 0x08000208,
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- 0x00000008, 0x08020208, 0x00000200, 0x08000000,
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- 0x08020200, 0x08000000, 0x00020008, 0x00000208,
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- 0x00020000, 0x08020200, 0x08000200, 0x00000000,
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- 0x00000200, 0x00020008, 0x08020208, 0x08000200,
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- 0x08000008, 0x00000200, 0x00000000, 0x08020008,
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- 0x08000208, 0x00020000, 0x08000000, 0x08020208,
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- 0x00000008, 0x00020208, 0x00020200, 0x08000008,
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- 0x08020000, 0x08000208, 0x00000208, 0x08020000,
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- 0x00020208, 0x00000008, 0x08020008, 0x00020200
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- };
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-
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- private static readonly uint[] SP4 =
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- {
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- 0x00802001, 0x00002081, 0x00002081, 0x00000080,
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- 0x00802080, 0x00800081, 0x00800001, 0x00002001,
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- 0x00000000, 0x00802000, 0x00802000, 0x00802081,
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- 0x00000081, 0x00000000, 0x00800080, 0x00800001,
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- 0x00000001, 0x00002000, 0x00800000, 0x00802001,
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- 0x00000080, 0x00800000, 0x00002001, 0x00002080,
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- 0x00800081, 0x00000001, 0x00002080, 0x00800080,
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- 0x00002000, 0x00802080, 0x00802081, 0x00000081,
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- 0x00800080, 0x00800001, 0x00802000, 0x00802081,
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- 0x00000081, 0x00000000, 0x00000000, 0x00802000,
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- 0x00002080, 0x00800080, 0x00800081, 0x00000001,
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- 0x00802001, 0x00002081, 0x00002081, 0x00000080,
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- 0x00802081, 0x00000081, 0x00000001, 0x00002000,
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- 0x00800001, 0x00002001, 0x00802080, 0x00800081,
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- 0x00002001, 0x00002080, 0x00800000, 0x00802001,
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- 0x00000080, 0x00800000, 0x00002000, 0x00802080
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- };
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-
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- private static readonly uint[] SP5 =
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- {
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- 0x00000100, 0x02080100, 0x02080000, 0x42000100,
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- 0x00080000, 0x00000100, 0x40000000, 0x02080000,
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- 0x40080100, 0x00080000, 0x02000100, 0x40080100,
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- 0x42000100, 0x42080000, 0x00080100, 0x40000000,
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- 0x02000000, 0x40080000, 0x40080000, 0x00000000,
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- 0x40000100, 0x42080100, 0x42080100, 0x02000100,
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- 0x42080000, 0x40000100, 0x00000000, 0x42000000,
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- 0x02080100, 0x02000000, 0x42000000, 0x00080100,
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- 0x00080000, 0x42000100, 0x00000100, 0x02000000,
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- 0x40000000, 0x02080000, 0x42000100, 0x40080100,
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- 0x02000100, 0x40000000, 0x42080000, 0x02080100,
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- 0x40080100, 0x00000100, 0x02000000, 0x42080000,
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- 0x42080100, 0x00080100, 0x42000000, 0x42080100,
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- 0x02080000, 0x00000000, 0x40080000, 0x42000000,
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- 0x00080100, 0x02000100, 0x40000100, 0x00080000,
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- 0x00000000, 0x40080000, 0x02080100, 0x40000100
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- };
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-
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- private static readonly uint[] SP6 =
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- {
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- 0x20000010, 0x20400000, 0x00004000, 0x20404010,
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- 0x20400000, 0x00000010, 0x20404010, 0x00400000,
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- 0x20004000, 0x00404010, 0x00400000, 0x20000010,
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- 0x00400010, 0x20004000, 0x20000000, 0x00004010,
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- 0x00000000, 0x00400010, 0x20004010, 0x00004000,
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- 0x00404000, 0x20004010, 0x00000010, 0x20400010,
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- 0x20400010, 0x00000000, 0x00404010, 0x20404000,
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- 0x00004010, 0x00404000, 0x20404000, 0x20000000,
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- 0x20004000, 0x00000010, 0x20400010, 0x00404000,
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- 0x20404010, 0x00400000, 0x00004010, 0x20000010,
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- 0x00400000, 0x20004000, 0x20000000, 0x00004010,
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- 0x20000010, 0x20404010, 0x00404000, 0x20400000,
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- 0x00404010, 0x20404000, 0x00000000, 0x20400010,
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- 0x00000010, 0x00004000, 0x20400000, 0x00404010,
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- 0x00004000, 0x00400010, 0x20004010, 0x00000000,
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- 0x20404000, 0x20000000, 0x00400010, 0x20004010
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- };
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-
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- private static readonly uint[] SP7 =
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- {
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- 0x00200000, 0x04200002, 0x04000802, 0x00000000,
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- 0x00000800, 0x04000802, 0x00200802, 0x04200800,
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- 0x04200802, 0x00200000, 0x00000000, 0x04000002,
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- 0x00000002, 0x04000000, 0x04200002, 0x00000802,
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- 0x04000800, 0x00200802, 0x00200002, 0x04000800,
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- 0x04000002, 0x04200000, 0x04200800, 0x00200002,
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- 0x04200000, 0x00000800, 0x00000802, 0x04200802,
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- 0x00200800, 0x00000002, 0x04000000, 0x00200800,
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- 0x04000000, 0x00200800, 0x00200000, 0x04000802,
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- 0x04000802, 0x04200002, 0x04200002, 0x00000002,
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- 0x00200002, 0x04000000, 0x04000800, 0x00200000,
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- 0x04200800, 0x00000802, 0x00200802, 0x04200800,
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- 0x00000802, 0x04000002, 0x04200802, 0x04200000,
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- 0x00200800, 0x00000000, 0x00000002, 0x04200802,
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- 0x00000000, 0x00200802, 0x04200000, 0x00000800,
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- 0x04000002, 0x04000800, 0x00000800, 0x00200002
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- };
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-
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- private static readonly uint[] SP8 =
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- {
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- 0x10001040, 0x00001000, 0x00040000, 0x10041040,
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- 0x10000000, 0x10001040, 0x00000040, 0x10000000,
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- 0x00040040, 0x10040000, 0x10041040, 0x00041000,
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- 0x10041000, 0x00041040, 0x00001000, 0x00000040,
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- 0x10040000, 0x10000040, 0x10001000, 0x00001040,
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- 0x00041000, 0x00040040, 0x10040040, 0x10041000,
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- 0x00001040, 0x00000000, 0x00000000, 0x10040040,
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- 0x10000040, 0x10001000, 0x00041040, 0x00040000,
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- 0x00041040, 0x00040000, 0x10041000, 0x00001000,
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- 0x00000040, 0x10040040, 0x00001000, 0x00041040,
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- 0x10001000, 0x00000040, 0x10000040, 0x10040000,
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- 0x10040040, 0x10000000, 0x00040000, 0x10001040,
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- 0x00000000, 0x10041040, 0x00040040, 0x10000040,
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- 0x10040000, 0x10001000, 0x10001040, 0x00000000,
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- 0x10041040, 0x00041000, 0x00041000, 0x00001040,
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- 0x00001040, 0x00040040, 0x10000000, 0x10041000
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- };
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-
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- #endregion
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-
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- /// <summary>
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- /// Initializes a new instance of the <see cref="DesCipher"/> class.
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- /// </summary>
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- /// <param name="key">The key.</param>
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- /// <param name="mode">The mode.</param>
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- /// <param name="padding">The padding.</param>
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- /// <exception cref="ArgumentNullException"><paramref name="key"/> is null.</exception>
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- public DesCipher(byte[] key, CipherMode mode, CipherPadding padding)
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- : base(key, 8, mode, padding)
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- {
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- }
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-
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- /// <summary>
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- /// Encrypts the specified region of the input byte array and copies the encrypted data to the specified region of the output byte array.
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- /// </summary>
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- /// <param name="inputBuffer">The input data to encrypt.</param>
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- /// <param name="inputOffset">The offset into the input byte array from which to begin using data.</param>
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- /// <param name="inputCount">The number of bytes in the input byte array to use as data.</param>
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- /// <param name="outputBuffer">The output to which to write encrypted data.</param>
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- /// <param name="outputOffset">The offset into the output byte array from which to begin writing data.</param>
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- /// <returns>
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- /// The number of bytes encrypted.
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- /// </returns>
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- public override int EncryptBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
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- {
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- if ((inputOffset + BlockSize) > inputBuffer.Length)
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- throw new IndexOutOfRangeException("input buffer too short");
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-
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- if ((outputOffset + BlockSize) > outputBuffer.Length)
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- throw new IndexOutOfRangeException("output buffer too short");
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-
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- if (_encryptionKey == null)
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- {
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- _encryptionKey = GenerateWorkingKey(true, Key);
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- }
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-
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- DesFunc(_encryptionKey, inputBuffer, inputOffset, outputBuffer, outputOffset);
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-
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- return BlockSize;
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- }
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-
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- /// <summary>
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- /// Decrypts the specified region of the input byte array and copies the decrypted data to the specified region of the output byte array.
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- /// </summary>
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- /// <param name="inputBuffer">The input data to decrypt.</param>
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- /// <param name="inputOffset">The offset into the input byte array from which to begin using data.</param>
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- /// <param name="inputCount">The number of bytes in the input byte array to use as data.</param>
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- /// <param name="outputBuffer">The output to which to write decrypted data.</param>
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- /// <param name="outputOffset">The offset into the output byte array from which to begin writing data.</param>
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- /// <returns>
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- /// The number of bytes decrypted.
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- /// </returns>
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- public override int DecryptBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
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- {
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- if ((inputOffset + BlockSize) > inputBuffer.Length)
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- throw new IndexOutOfRangeException("input buffer too short");
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-
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- if ((outputOffset + BlockSize) > outputBuffer.Length)
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- throw new IndexOutOfRangeException("output buffer too short");
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-
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- if (_decryptionKey == null)
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- {
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- _decryptionKey = GenerateWorkingKey(false, Key);
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- }
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-
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- DesFunc(_decryptionKey, inputBuffer, inputOffset, outputBuffer, outputOffset);
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-
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- return BlockSize;
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- }
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+ /// <summary>
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+ /// Implements DES cipher algorithm.
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+ /// </summary>
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+ public class DesCipher : BlockCipher
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+ {
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+ private int[] _encryptionKey;
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+
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+ private int[] _decryptionKey;
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+
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+ #region Static tables
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+
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+ private static readonly short[] bytebit = {128, 64, 32, 16, 8, 4, 2, 1};
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+
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+ private static readonly int[] bigbyte =
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+ {
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+ 0x800000, 0x400000, 0x200000, 0x100000,
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+ 0x80000, 0x40000, 0x20000, 0x10000,
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+ 0x8000, 0x4000, 0x2000, 0x1000,
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+ 0x800, 0x400, 0x200, 0x100,
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+ 0x80, 0x40, 0x20, 0x10,
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+ 0x8, 0x4, 0x2, 0x1
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+ };
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+
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+ /*
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+ * Use the key schedule specified in the Standard (ANSI X3.92-1981).
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+ */
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+ private static readonly byte[] pc1 =
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+ {
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+ 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
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+ 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
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+ 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
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|
+ 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly byte[] totrot =
|
|
|
+ {
|
|
|
+ 1, 2, 4, 6, 8, 10, 12, 14,
|
|
|
+ 15, 17, 19, 21, 23, 25, 27, 28
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly byte[] pc2 =
|
|
|
+ {
|
|
|
+ 13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
|
|
|
+ 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
|
|
|
+ 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
|
|
|
+ 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP1 =
|
|
|
+ {
|
|
|
+ 0x01010400, 0x00000000, 0x00010000, 0x01010404,
|
|
|
+ 0x01010004, 0x00010404, 0x00000004, 0x00010000,
|
|
|
+ 0x00000400, 0x01010400, 0x01010404, 0x00000400,
|
|
|
+ 0x01000404, 0x01010004, 0x01000000, 0x00000004,
|
|
|
+ 0x00000404, 0x01000400, 0x01000400, 0x00010400,
|
|
|
+ 0x00010400, 0x01010000, 0x01010000, 0x01000404,
|
|
|
+ 0x00010004, 0x01000004, 0x01000004, 0x00010004,
|
|
|
+ 0x00000000, 0x00000404, 0x00010404, 0x01000000,
|
|
|
+ 0x00010000, 0x01010404, 0x00000004, 0x01010000,
|
|
|
+ 0x01010400, 0x01000000, 0x01000000, 0x00000400,
|
|
|
+ 0x01010004, 0x00010000, 0x00010400, 0x01000004,
|
|
|
+ 0x00000400, 0x00000004, 0x01000404, 0x00010404,
|
|
|
+ 0x01010404, 0x00010004, 0x01010000, 0x01000404,
|
|
|
+ 0x01000004, 0x00000404, 0x00010404, 0x01010400,
|
|
|
+ 0x00000404, 0x01000400, 0x01000400, 0x00000000,
|
|
|
+ 0x00010004, 0x00010400, 0x00000000, 0x01010004
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP2 =
|
|
|
+ {
|
|
|
+ 0x80108020, 0x80008000, 0x00008000, 0x00108020,
|
|
|
+ 0x00100000, 0x00000020, 0x80100020, 0x80008020,
|
|
|
+ 0x80000020, 0x80108020, 0x80108000, 0x80000000,
|
|
|
+ 0x80008000, 0x00100000, 0x00000020, 0x80100020,
|
|
|
+ 0x00108000, 0x00100020, 0x80008020, 0x00000000,
|
|
|
+ 0x80000000, 0x00008000, 0x00108020, 0x80100000,
|
|
|
+ 0x00100020, 0x80000020, 0x00000000, 0x00108000,
|
|
|
+ 0x00008020, 0x80108000, 0x80100000, 0x00008020,
|
|
|
+ 0x00000000, 0x00108020, 0x80100020, 0x00100000,
|
|
|
+ 0x80008020, 0x80100000, 0x80108000, 0x00008000,
|
|
|
+ 0x80100000, 0x80008000, 0x00000020, 0x80108020,
|
|
|
+ 0x00108020, 0x00000020, 0x00008000, 0x80000000,
|
|
|
+ 0x00008020, 0x80108000, 0x00100000, 0x80000020,
|
|
|
+ 0x00100020, 0x80008020, 0x80000020, 0x00100020,
|
|
|
+ 0x00108000, 0x00000000, 0x80008000, 0x00008020,
|
|
|
+ 0x80000000, 0x80100020, 0x80108020, 0x00108000
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP3 =
|
|
|
+ {
|
|
|
+ 0x00000208, 0x08020200, 0x00000000, 0x08020008,
|
|
|
+ 0x08000200, 0x00000000, 0x00020208, 0x08000200,
|
|
|
+ 0x00020008, 0x08000008, 0x08000008, 0x00020000,
|
|
|
+ 0x08020208, 0x00020008, 0x08020000, 0x00000208,
|
|
|
+ 0x08000000, 0x00000008, 0x08020200, 0x00000200,
|
|
|
+ 0x00020200, 0x08020000, 0x08020008, 0x00020208,
|
|
|
+ 0x08000208, 0x00020200, 0x00020000, 0x08000208,
|
|
|
+ 0x00000008, 0x08020208, 0x00000200, 0x08000000,
|
|
|
+ 0x08020200, 0x08000000, 0x00020008, 0x00000208,
|
|
|
+ 0x00020000, 0x08020200, 0x08000200, 0x00000000,
|
|
|
+ 0x00000200, 0x00020008, 0x08020208, 0x08000200,
|
|
|
+ 0x08000008, 0x00000200, 0x00000000, 0x08020008,
|
|
|
+ 0x08000208, 0x00020000, 0x08000000, 0x08020208,
|
|
|
+ 0x00000008, 0x00020208, 0x00020200, 0x08000008,
|
|
|
+ 0x08020000, 0x08000208, 0x00000208, 0x08020000,
|
|
|
+ 0x00020208, 0x00000008, 0x08020008, 0x00020200
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP4 =
|
|
|
+ {
|
|
|
+ 0x00802001, 0x00002081, 0x00002081, 0x00000080,
|
|
|
+ 0x00802080, 0x00800081, 0x00800001, 0x00002001,
|
|
|
+ 0x00000000, 0x00802000, 0x00802000, 0x00802081,
|
|
|
+ 0x00000081, 0x00000000, 0x00800080, 0x00800001,
|
|
|
+ 0x00000001, 0x00002000, 0x00800000, 0x00802001,
|
|
|
+ 0x00000080, 0x00800000, 0x00002001, 0x00002080,
|
|
|
+ 0x00800081, 0x00000001, 0x00002080, 0x00800080,
|
|
|
+ 0x00002000, 0x00802080, 0x00802081, 0x00000081,
|
|
|
+ 0x00800080, 0x00800001, 0x00802000, 0x00802081,
|
|
|
+ 0x00000081, 0x00000000, 0x00000000, 0x00802000,
|
|
|
+ 0x00002080, 0x00800080, 0x00800081, 0x00000001,
|
|
|
+ 0x00802001, 0x00002081, 0x00002081, 0x00000080,
|
|
|
+ 0x00802081, 0x00000081, 0x00000001, 0x00002000,
|
|
|
+ 0x00800001, 0x00002001, 0x00802080, 0x00800081,
|
|
|
+ 0x00002001, 0x00002080, 0x00800000, 0x00802001,
|
|
|
+ 0x00000080, 0x00800000, 0x00002000, 0x00802080
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP5 =
|
|
|
+ {
|
|
|
+ 0x00000100, 0x02080100, 0x02080000, 0x42000100,
|
|
|
+ 0x00080000, 0x00000100, 0x40000000, 0x02080000,
|
|
|
+ 0x40080100, 0x00080000, 0x02000100, 0x40080100,
|
|
|
+ 0x42000100, 0x42080000, 0x00080100, 0x40000000,
|
|
|
+ 0x02000000, 0x40080000, 0x40080000, 0x00000000,
|
|
|
+ 0x40000100, 0x42080100, 0x42080100, 0x02000100,
|
|
|
+ 0x42080000, 0x40000100, 0x00000000, 0x42000000,
|
|
|
+ 0x02080100, 0x02000000, 0x42000000, 0x00080100,
|
|
|
+ 0x00080000, 0x42000100, 0x00000100, 0x02000000,
|
|
|
+ 0x40000000, 0x02080000, 0x42000100, 0x40080100,
|
|
|
+ 0x02000100, 0x40000000, 0x42080000, 0x02080100,
|
|
|
+ 0x40080100, 0x00000100, 0x02000000, 0x42080000,
|
|
|
+ 0x42080100, 0x00080100, 0x42000000, 0x42080100,
|
|
|
+ 0x02080000, 0x00000000, 0x40080000, 0x42000000,
|
|
|
+ 0x00080100, 0x02000100, 0x40000100, 0x00080000,
|
|
|
+ 0x00000000, 0x40080000, 0x02080100, 0x40000100
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP6 =
|
|
|
+ {
|
|
|
+ 0x20000010, 0x20400000, 0x00004000, 0x20404010,
|
|
|
+ 0x20400000, 0x00000010, 0x20404010, 0x00400000,
|
|
|
+ 0x20004000, 0x00404010, 0x00400000, 0x20000010,
|
|
|
+ 0x00400010, 0x20004000, 0x20000000, 0x00004010,
|
|
|
+ 0x00000000, 0x00400010, 0x20004010, 0x00004000,
|
|
|
+ 0x00404000, 0x20004010, 0x00000010, 0x20400010,
|
|
|
+ 0x20400010, 0x00000000, 0x00404010, 0x20404000,
|
|
|
+ 0x00004010, 0x00404000, 0x20404000, 0x20000000,
|
|
|
+ 0x20004000, 0x00000010, 0x20400010, 0x00404000,
|
|
|
+ 0x20404010, 0x00400000, 0x00004010, 0x20000010,
|
|
|
+ 0x00400000, 0x20004000, 0x20000000, 0x00004010,
|
|
|
+ 0x20000010, 0x20404010, 0x00404000, 0x20400000,
|
|
|
+ 0x00404010, 0x20404000, 0x00000000, 0x20400010,
|
|
|
+ 0x00000010, 0x00004000, 0x20400000, 0x00404010,
|
|
|
+ 0x00004000, 0x00400010, 0x20004010, 0x00000000,
|
|
|
+ 0x20404000, 0x20000000, 0x00400010, 0x20004010
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP7 =
|
|
|
+ {
|
|
|
+ 0x00200000, 0x04200002, 0x04000802, 0x00000000,
|
|
|
+ 0x00000800, 0x04000802, 0x00200802, 0x04200800,
|
|
|
+ 0x04200802, 0x00200000, 0x00000000, 0x04000002,
|
|
|
+ 0x00000002, 0x04000000, 0x04200002, 0x00000802,
|
|
|
+ 0x04000800, 0x00200802, 0x00200002, 0x04000800,
|
|
|
+ 0x04000002, 0x04200000, 0x04200800, 0x00200002,
|
|
|
+ 0x04200000, 0x00000800, 0x00000802, 0x04200802,
|
|
|
+ 0x00200800, 0x00000002, 0x04000000, 0x00200800,
|
|
|
+ 0x04000000, 0x00200800, 0x00200000, 0x04000802,
|
|
|
+ 0x04000802, 0x04200002, 0x04200002, 0x00000002,
|
|
|
+ 0x00200002, 0x04000000, 0x04000800, 0x00200000,
|
|
|
+ 0x04200800, 0x00000802, 0x00200802, 0x04200800,
|
|
|
+ 0x00000802, 0x04000002, 0x04200802, 0x04200000,
|
|
|
+ 0x00200800, 0x00000000, 0x00000002, 0x04200802,
|
|
|
+ 0x00000000, 0x00200802, 0x04200000, 0x00000800,
|
|
|
+ 0x04000002, 0x04000800, 0x00000800, 0x00200002
|
|
|
+ };
|
|
|
+
|
|
|
+ private static readonly uint[] SP8 =
|
|
|
+ {
|
|
|
+ 0x10001040, 0x00001000, 0x00040000, 0x10041040,
|
|
|
+ 0x10000000, 0x10001040, 0x00000040, 0x10000000,
|
|
|
+ 0x00040040, 0x10040000, 0x10041040, 0x00041000,
|
|
|
+ 0x10041000, 0x00041040, 0x00001000, 0x00000040,
|
|
|
+ 0x10040000, 0x10000040, 0x10001000, 0x00001040,
|
|
|
+ 0x00041000, 0x00040040, 0x10040040, 0x10041000,
|
|
|
+ 0x00001040, 0x00000000, 0x00000000, 0x10040040,
|
|
|
+ 0x10000040, 0x10001000, 0x00041040, 0x00040000,
|
|
|
+ 0x00041040, 0x00040000, 0x10041000, 0x00001000,
|
|
|
+ 0x00000040, 0x10040040, 0x00001000, 0x00041040,
|
|
|
+ 0x10001000, 0x00000040, 0x10000040, 0x10040000,
|
|
|
+ 0x10040040, 0x10000000, 0x00040000, 0x10001040,
|
|
|
+ 0x00000000, 0x10041040, 0x00040040, 0x10000040,
|
|
|
+ 0x10040000, 0x10001000, 0x10001040, 0x00000000,
|
|
|
+ 0x10041040, 0x00041000, 0x00041000, 0x00001040,
|
|
|
+ 0x00001040, 0x00040040, 0x10000000, 0x10041000
|
|
|
+ };
|
|
|
+
|
|
|
+ #endregion
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Initializes a new instance of the <see cref="DesCipher"/> class.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="key">The key.</param>
|
|
|
+ /// <param name="mode">The mode.</param>
|
|
|
+ /// <param name="padding">The padding.</param>
|
|
|
+ /// <exception cref="ArgumentNullException"><paramref name="key"/> is <c>null</c>.</exception>
|
|
|
+ public DesCipher(byte[] key, CipherMode mode, CipherPadding padding)
|
|
|
+ : base(key, 8, mode, padding)
|
|
|
+ {
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Encrypts the specified region of the input byte array and copies the encrypted data to the specified region of the output byte array.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="inputBuffer">The input data to encrypt.</param>
|
|
|
+ /// <param name="inputOffset">The offset into the input byte array from which to begin using data.</param>
|
|
|
+ /// <param name="inputCount">The number of bytes in the input byte array to use as data.</param>
|
|
|
+ /// <param name="outputBuffer">The output to which to write encrypted data.</param>
|
|
|
+ /// <param name="outputOffset">The offset into the output byte array from which to begin writing data.</param>
|
|
|
+ /// <returns>
|
|
|
+ /// The number of bytes encrypted.
|
|
|
+ /// </returns>
|
|
|
+ public override int EncryptBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
|
|
|
+ {
|
|
|
+ if ((inputOffset + BlockSize) > inputBuffer.Length)
|
|
|
+ throw new IndexOutOfRangeException("input buffer too short");
|
|
|
+
|
|
|
+ if ((outputOffset + BlockSize) > outputBuffer.Length)
|
|
|
+ throw new IndexOutOfRangeException("output buffer too short");
|
|
|
+
|
|
|
+ if (_encryptionKey == null)
|
|
|
+ {
|
|
|
+ _encryptionKey = GenerateWorkingKey(true, Key);
|
|
|
+ }
|
|
|
+
|
|
|
+ DesFunc(_encryptionKey, inputBuffer, inputOffset, outputBuffer, outputOffset);
|
|
|
+
|
|
|
+ return BlockSize;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Decrypts the specified region of the input byte array and copies the decrypted data to the specified region of the output byte array.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="inputBuffer">The input data to decrypt.</param>
|
|
|
+ /// <param name="inputOffset">The offset into the input byte array from which to begin using data.</param>
|
|
|
+ /// <param name="inputCount">The number of bytes in the input byte array to use as data.</param>
|
|
|
+ /// <param name="outputBuffer">The output to which to write decrypted data.</param>
|
|
|
+ /// <param name="outputOffset">The offset into the output byte array from which to begin writing data.</param>
|
|
|
+ /// <returns>
|
|
|
+ /// The number of bytes decrypted.
|
|
|
+ /// </returns>
|
|
|
+ public override int DecryptBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
|
|
|
+ {
|
|
|
+ if ((inputOffset + BlockSize) > inputBuffer.Length)
|
|
|
+ throw new IndexOutOfRangeException("input buffer too short");
|
|
|
+
|
|
|
+ if ((outputOffset + BlockSize) > outputBuffer.Length)
|
|
|
+ throw new IndexOutOfRangeException("output buffer too short");
|
|
|
+
|
|
|
+ if (_decryptionKey == null)
|
|
|
+ {
|
|
|
+ _decryptionKey = GenerateWorkingKey(false, Key);
|
|
|
+ }
|
|
|
+
|
|
|
+ DesFunc(_decryptionKey, inputBuffer, inputOffset, outputBuffer, outputOffset);
|
|
|
+
|
|
|
+ return BlockSize;
|
|
|
+ }
|
|
|
|
|
|
/// <summary>
|
|
|
/// Generates the working key.
|
|
|
@@ -291,189 +288,189 @@ namespace Renci.SshNet.Security.Cryptography.Ciphers
|
|
|
/// <param name="encrypting">if set to <c>true</c> [encrypting].</param>
|
|
|
/// <param name="key">The key.</param>
|
|
|
/// <returns>Generated working key.</returns>
|
|
|
- protected int[] GenerateWorkingKey(bool encrypting, byte[] key)
|
|
|
- {
|
|
|
- ValidateKey();
|
|
|
-
|
|
|
- int[] newKey = new int[32];
|
|
|
- bool[] pc1m = new bool[56];
|
|
|
- bool[] pcr = new bool[56];
|
|
|
-
|
|
|
- for (int j = 0; j < 56; j++)
|
|
|
- {
|
|
|
- int l = pc1[j];
|
|
|
-
|
|
|
- pc1m[j] = ((key[(uint)l >> 3] & bytebit[l & 07]) != 0);
|
|
|
- }
|
|
|
-
|
|
|
- for (int i = 0; i < 16; i++)
|
|
|
- {
|
|
|
- int l, m;
|
|
|
-
|
|
|
- if (encrypting)
|
|
|
- {
|
|
|
- m = i << 1;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- m = (15 - i) << 1;
|
|
|
- }
|
|
|
-
|
|
|
- var n = m + 1;
|
|
|
- newKey[m] = newKey[n] = 0;
|
|
|
-
|
|
|
- for (int j = 0; j < 28; j++)
|
|
|
- {
|
|
|
- l = j + totrot[i];
|
|
|
- if (l < 28)
|
|
|
- {
|
|
|
- pcr[j] = pc1m[l];
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- pcr[j] = pc1m[l - 28];
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- for (int j = 28; j < 56; j++)
|
|
|
- {
|
|
|
- l = j + totrot[i];
|
|
|
- if (l < 56)
|
|
|
- {
|
|
|
- pcr[j] = pc1m[l];
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- pcr[j] = pc1m[l - 28];
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- for (int j = 0; j < 24; j++)
|
|
|
- {
|
|
|
- if (pcr[pc2[j]])
|
|
|
- {
|
|
|
- newKey[m] |= bigbyte[j];
|
|
|
- }
|
|
|
-
|
|
|
- if (pcr[pc2[j + 24]])
|
|
|
- {
|
|
|
- newKey[n] |= bigbyte[j];
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- //
|
|
|
- // store the processed key
|
|
|
- //
|
|
|
- for (int i = 0; i != 32; i += 2)
|
|
|
- {
|
|
|
- var i1 = newKey[i];
|
|
|
- var i2 = newKey[i + 1];
|
|
|
-
|
|
|
- newKey[i] = (int) ((uint)((i1 & 0x00fc0000) << 6) |
|
|
|
- (uint)((i1 & 0x00000fc0) << 10) |
|
|
|
- ((uint)(i2 & 0x00fc0000) >> 10) |
|
|
|
- ((uint)(i2 & 0x00000fc0) >> 6));
|
|
|
-
|
|
|
- newKey[i + 1] = (int)((uint)((i1 & 0x0003f000) << 12) |
|
|
|
- (uint)((i1 & 0x0000003f) << 16) |
|
|
|
- ((uint)(i2 & 0x0003f000) >> 4) |
|
|
|
- (uint)(i2 & 0x0000003f));
|
|
|
- }
|
|
|
-
|
|
|
- return newKey;
|
|
|
- }
|
|
|
-
|
|
|
- /// <summary>
|
|
|
- /// Validates the key.
|
|
|
- /// </summary>
|
|
|
- protected virtual void ValidateKey()
|
|
|
- {
|
|
|
- var keySize = Key.Length * 8;
|
|
|
-
|
|
|
- if (keySize != 64)
|
|
|
- throw new ArgumentException(string.Format("KeySize '{0}' is not valid for this algorithm.", keySize));
|
|
|
- }
|
|
|
-
|
|
|
- /// <summary>
|
|
|
- /// Performs DES function.
|
|
|
- /// </summary>
|
|
|
- /// <param name="wKey">The w key.</param>
|
|
|
- /// <param name="input">The input.</param>
|
|
|
- /// <param name="inOff">The in off.</param>
|
|
|
- /// <param name="outBytes">The out bytes.</param>
|
|
|
- /// <param name="outOff">The out off.</param>
|
|
|
- protected static void DesFunc(int[] wKey, byte[] input, int inOff, byte[] outBytes, int outOff)
|
|
|
- {
|
|
|
- uint left = BigEndianToUInt32(input, inOff);
|
|
|
- uint right = BigEndianToUInt32(input, inOff + 4);
|
|
|
-
|
|
|
- var work = ((left >> 4) ^ right) & 0x0f0f0f0f;
|
|
|
- right ^= work;
|
|
|
- left ^= (work << 4);
|
|
|
- work = ((left >> 16) ^ right) & 0x0000ffff;
|
|
|
- right ^= work;
|
|
|
- left ^= (work << 16);
|
|
|
- work = ((right >> 2) ^ left) & 0x33333333;
|
|
|
- left ^= work;
|
|
|
- right ^= (work << 2);
|
|
|
- work = ((right >> 8) ^ left) & 0x00ff00ff;
|
|
|
- left ^= work;
|
|
|
- right ^= (work << 8);
|
|
|
- right = (right << 1) | (right >> 31);
|
|
|
- work = (left ^ right) & 0xaaaaaaaa;
|
|
|
- left ^= work;
|
|
|
- right ^= work;
|
|
|
- left = (left << 1) | (left >> 31);
|
|
|
-
|
|
|
- for (int round = 0; round < 8; round++)
|
|
|
- {
|
|
|
- work = (right << 28) | (right >> 4);
|
|
|
- work ^= (uint)wKey[round * 4 + 0];
|
|
|
- var fval = SP7[work & 0x3f];
|
|
|
- fval |= SP5[(work >> 8) & 0x3f];
|
|
|
- fval |= SP3[(work >> 16) & 0x3f];
|
|
|
- fval |= SP1[(work >> 24) & 0x3f];
|
|
|
- work = right ^ (uint)wKey[round * 4 + 1];
|
|
|
- fval |= SP8[work & 0x3f];
|
|
|
- fval |= SP6[(work >> 8) & 0x3f];
|
|
|
- fval |= SP4[(work >> 16) & 0x3f];
|
|
|
- fval |= SP2[(work >> 24) & 0x3f];
|
|
|
- left ^= fval;
|
|
|
- work = (left << 28) | (left >> 4);
|
|
|
- work ^= (uint)wKey[round * 4 + 2];
|
|
|
- fval = SP7[work & 0x3f];
|
|
|
- fval |= SP5[(work >> 8) & 0x3f];
|
|
|
- fval |= SP3[(work >> 16) & 0x3f];
|
|
|
- fval |= SP1[(work >> 24) & 0x3f];
|
|
|
- work = left ^ (uint)wKey[round * 4 + 3];
|
|
|
- fval |= SP8[work & 0x3f];
|
|
|
- fval |= SP6[(work >> 8) & 0x3f];
|
|
|
- fval |= SP4[(work >> 16) & 0x3f];
|
|
|
- fval |= SP2[(work >> 24) & 0x3f];
|
|
|
- right ^= fval;
|
|
|
- }
|
|
|
-
|
|
|
- right = (right << 31) | (right >> 1);
|
|
|
- work = (left ^ right) & 0xaaaaaaaa;
|
|
|
- left ^= work;
|
|
|
- right ^= work;
|
|
|
- left = (left << 31) | (left >> 1);
|
|
|
- work = ((left >> 8) ^ right) & 0x00ff00ff;
|
|
|
- right ^= work;
|
|
|
- left ^= (work << 8);
|
|
|
- work = ((left >> 2) ^ right) & 0x33333333;
|
|
|
- right ^= work;
|
|
|
- left ^= (work << 2);
|
|
|
- work = ((right >> 16) ^ left) & 0x0000ffff;
|
|
|
- left ^= work;
|
|
|
- right ^= (work << 16);
|
|
|
- work = ((right >> 4) ^ left) & 0x0f0f0f0f;
|
|
|
- left ^= work;
|
|
|
- right ^= (work << 4);
|
|
|
-
|
|
|
- UInt32ToBigEndian(right, outBytes, outOff);
|
|
|
- UInt32ToBigEndian(left, outBytes, outOff + 4);
|
|
|
- }
|
|
|
- }
|
|
|
+ protected int[] GenerateWorkingKey(bool encrypting, byte[] key)
|
|
|
+ {
|
|
|
+ ValidateKey();
|
|
|
+
|
|
|
+ int[] newKey = new int[32];
|
|
|
+ bool[] pc1m = new bool[56];
|
|
|
+ bool[] pcr = new bool[56];
|
|
|
+
|
|
|
+ for (int j = 0; j < 56; j++)
|
|
|
+ {
|
|
|
+ int l = pc1[j];
|
|
|
+
|
|
|
+ pc1m[j] = ((key[(uint)l >> 3] & bytebit[l & 07]) != 0);
|
|
|
+ }
|
|
|
+
|
|
|
+ for (int i = 0; i < 16; i++)
|
|
|
+ {
|
|
|
+ int l, m;
|
|
|
+
|
|
|
+ if (encrypting)
|
|
|
+ {
|
|
|
+ m = i << 1;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ m = (15 - i) << 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ var n = m + 1;
|
|
|
+ newKey[m] = newKey[n] = 0;
|
|
|
+
|
|
|
+ for (int j = 0; j < 28; j++)
|
|
|
+ {
|
|
|
+ l = j + totrot[i];
|
|
|
+ if (l < 28)
|
|
|
+ {
|
|
|
+ pcr[j] = pc1m[l];
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ pcr[j] = pc1m[l - 28];
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ for (int j = 28; j < 56; j++)
|
|
|
+ {
|
|
|
+ l = j + totrot[i];
|
|
|
+ if (l < 56)
|
|
|
+ {
|
|
|
+ pcr[j] = pc1m[l];
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ pcr[j] = pc1m[l - 28];
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ for (int j = 0; j < 24; j++)
|
|
|
+ {
|
|
|
+ if (pcr[pc2[j]])
|
|
|
+ {
|
|
|
+ newKey[m] |= bigbyte[j];
|
|
|
+ }
|
|
|
+
|
|
|
+ if (pcr[pc2[j + 24]])
|
|
|
+ {
|
|
|
+ newKey[n] |= bigbyte[j];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ //
|
|
|
+ // store the processed key
|
|
|
+ //
|
|
|
+ for (int i = 0; i != 32; i += 2)
|
|
|
+ {
|
|
|
+ var i1 = newKey[i];
|
|
|
+ var i2 = newKey[i + 1];
|
|
|
+
|
|
|
+ newKey[i] = (int)((uint)((i1 & 0x00fc0000) << 6) |
|
|
|
+ (uint)((i1 & 0x00000fc0) << 10) |
|
|
|
+ ((uint)(i2 & 0x00fc0000) >> 10) |
|
|
|
+ ((uint)(i2 & 0x00000fc0) >> 6));
|
|
|
+
|
|
|
+ newKey[i + 1] = (int)((uint)((i1 & 0x0003f000) << 12) |
|
|
|
+ (uint)((i1 & 0x0000003f) << 16) |
|
|
|
+ ((uint)(i2 & 0x0003f000) >> 4) |
|
|
|
+ (uint)(i2 & 0x0000003f));
|
|
|
+ }
|
|
|
+
|
|
|
+ return newKey;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Validates the key.
|
|
|
+ /// </summary>
|
|
|
+ protected virtual void ValidateKey()
|
|
|
+ {
|
|
|
+ var keySize = Key.Length * 8;
|
|
|
+
|
|
|
+ if (keySize != 64)
|
|
|
+ throw new ArgumentException(string.Format("KeySize '{0}' is not valid for this algorithm.", keySize));
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Performs DES function.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="wKey">The w key.</param>
|
|
|
+ /// <param name="input">The input.</param>
|
|
|
+ /// <param name="inOff">The in off.</param>
|
|
|
+ /// <param name="outBytes">The out bytes.</param>
|
|
|
+ /// <param name="outOff">The out off.</param>
|
|
|
+ protected static void DesFunc(int[] wKey, byte[] input, int inOff, byte[] outBytes, int outOff)
|
|
|
+ {
|
|
|
+ uint left = BigEndianToUInt32(input, inOff);
|
|
|
+ uint right = BigEndianToUInt32(input, inOff + 4);
|
|
|
+
|
|
|
+ var work = ((left >> 4) ^ right) & 0x0f0f0f0f;
|
|
|
+ right ^= work;
|
|
|
+ left ^= (work << 4);
|
|
|
+ work = ((left >> 16) ^ right) & 0x0000ffff;
|
|
|
+ right ^= work;
|
|
|
+ left ^= (work << 16);
|
|
|
+ work = ((right >> 2) ^ left) & 0x33333333;
|
|
|
+ left ^= work;
|
|
|
+ right ^= (work << 2);
|
|
|
+ work = ((right >> 8) ^ left) & 0x00ff00ff;
|
|
|
+ left ^= work;
|
|
|
+ right ^= (work << 8);
|
|
|
+ right = (right << 1) | (right >> 31);
|
|
|
+ work = (left ^ right) & 0xaaaaaaaa;
|
|
|
+ left ^= work;
|
|
|
+ right ^= work;
|
|
|
+ left = (left << 1) | (left >> 31);
|
|
|
+
|
|
|
+ for (int round = 0; round < 8; round++)
|
|
|
+ {
|
|
|
+ work = (right << 28) | (right >> 4);
|
|
|
+ work ^= (uint)wKey[round * 4 + 0];
|
|
|
+ var fval = SP7[work & 0x3f];
|
|
|
+ fval |= SP5[(work >> 8) & 0x3f];
|
|
|
+ fval |= SP3[(work >> 16) & 0x3f];
|
|
|
+ fval |= SP1[(work >> 24) & 0x3f];
|
|
|
+ work = right ^ (uint)wKey[round * 4 + 1];
|
|
|
+ fval |= SP8[work & 0x3f];
|
|
|
+ fval |= SP6[(work >> 8) & 0x3f];
|
|
|
+ fval |= SP4[(work >> 16) & 0x3f];
|
|
|
+ fval |= SP2[(work >> 24) & 0x3f];
|
|
|
+ left ^= fval;
|
|
|
+ work = (left << 28) | (left >> 4);
|
|
|
+ work ^= (uint)wKey[round * 4 + 2];
|
|
|
+ fval = SP7[work & 0x3f];
|
|
|
+ fval |= SP5[(work >> 8) & 0x3f];
|
|
|
+ fval |= SP3[(work >> 16) & 0x3f];
|
|
|
+ fval |= SP1[(work >> 24) & 0x3f];
|
|
|
+ work = left ^ (uint)wKey[round * 4 + 3];
|
|
|
+ fval |= SP8[work & 0x3f];
|
|
|
+ fval |= SP6[(work >> 8) & 0x3f];
|
|
|
+ fval |= SP4[(work >> 16) & 0x3f];
|
|
|
+ fval |= SP2[(work >> 24) & 0x3f];
|
|
|
+ right ^= fval;
|
|
|
+ }
|
|
|
+
|
|
|
+ right = (right << 31) | (right >> 1);
|
|
|
+ work = (left ^ right) & 0xaaaaaaaa;
|
|
|
+ left ^= work;
|
|
|
+ right ^= work;
|
|
|
+ left = (left << 31) | (left >> 1);
|
|
|
+ work = ((left >> 8) ^ right) & 0x00ff00ff;
|
|
|
+ right ^= work;
|
|
|
+ left ^= (work << 8);
|
|
|
+ work = ((left >> 2) ^ right) & 0x33333333;
|
|
|
+ right ^= work;
|
|
|
+ left ^= (work << 2);
|
|
|
+ work = ((right >> 16) ^ left) & 0x0000ffff;
|
|
|
+ left ^= work;
|
|
|
+ right ^= (work << 16);
|
|
|
+ work = ((right >> 4) ^ left) & 0x0f0f0f0f;
|
|
|
+ left ^= work;
|
|
|
+ right ^= (work << 4);
|
|
|
+
|
|
|
+ UInt32ToBigEndian(right, outBytes, outOff);
|
|
|
+ UInt32ToBigEndian(left, outBytes, outOff + 4);
|
|
|
+ }
|
|
|
+ }
|
|
|
}
|
Gert Driesen