public static void DES_ecb_encrypt_one(byte[] inBytesTotal, uint startPos, uint inLen, ref byte[] outBytesTotal, DES_key_schedule ks, int enc, CryptContext cryptContext) { int len_ = (((int)inLen + 7) / 8) * 8; outBytesTotal = new byte[len_]; byte[] inBytes = new byte[8]; byte[] outBytes = new byte[8]; int idx = 0; for (idx = 0; idx <= inLen - 8; idx += 8) { //if (idx % 16 == 0) // 如果是 16 的整数倍 //{ // 保证 8 个字节 CryptUtil.get8Byte(inBytesTotal, (int)startPos + idx, inBytes); DES_ecb_encrypt(inBytes, outBytes, ks, enc); Array.Copy(outBytes, 0, outBytesTotal, idx, 8); //} //else //{ // Array.Copy(inBytesTotal, idx, outBytesTotal, idx, 8); //} } }
protected void testDes() { //string testStr = "asdfasdf5"; //byte[] inBytes = System.Text.Encoding.UTF8.GetBytes(testStr); //byte[] key = { 0x65, 0xC1, 0x78, 0xB2, 0x84, 0xD1, 0x97, 0xCC }; byte[] key = { 26, 32, 127, 193, 251, 239, 174, 97 }; //byte[] inBytes = { 0x3f, 0x79, 0xd5, 0xe2, 0x4a, 0x8c, 0xb6, 0xc1, 0x3f, 0x79, 0xd5, 0xe2, 0x4a, 0x8c, 0xb6, 0xc1 }; byte[] inBytes = { 0x0c, 0x00, 0x00, 0x00, 0x03, 0x35, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; byte[] outBytes = new byte[16]; uint inSize = (uint)inBytes.Length; DES_key_schedule des5Key = new DES_key_schedule(); // RC5 key Dec.DES_set_key_unchecked(key, des5Key); CryptContext cryptContext = new CryptContext(); cryptContext.m_cryptAlgorithm = CryptAlgorithm.DES; cryptContext.setCryptKey(key); //Crypt.encryptData(inBytes, 0, 16, ref outBytes, des5Key, CryptAlgorithm.DES); //Crypt.decryptData(outBytes, 0, 16, ref inBytes, des5Key, CryptAlgorithm.DES); //testStr = System.Text.Encoding.UTF8.GetString(inBytes); Crypt.decryptData(inBytes, 0, 16, ref outBytes, cryptContext); }
public static void DES_ecb_encrypt(byte[] input, byte[] output, DES_key_schedule ks, int enc) { ulong l = 0; ulong[] ll = new ulong[2]; byte[] in_input = input; byte[] out_output = output; int c2l_in_input_startIdx = 0; int l2c_out_output_startIdx = 0; CryptUtil.c2l(in_input, ref l, ref c2l_in_input_startIdx); ll[0] = l; CryptUtil.c2l(in_input, ref l, ref c2l_in_input_startIdx); ll[1] = l; DES_encrypt1(ll, ks, enc); l = ll[0]; CryptUtil.l2c(l, out_output, ref l2c_out_output_startIdx); l = ll[1]; CryptUtil.l2c(l, out_output, ref l2c_out_output_startIdx); l = ll[0] = ll[1] = 0; }
public static void DES_encrypt1(ulong[] data, DES_key_schedule ks, int enc) { ulong l = 0, r = 0, t = 0, u = 0; //int i = 0; ulong[] s = null; r = data[0]; l = data[1]; CryptUtil.IP(ref r, ref l); /* * Things have been modified so that the initial rotate is done outside * the loop. This required the DES_SPtrans values in sp.h to be rotated * 1 bit to the right. One perl script later and things have a 5% speed * up on a sparc2. Thanks to Richard Outerbridge * <*****@*****.**> for pointing this out. */ /* clear the top bits on machines with 8byte longs */ /* shift left by 2 */ r = CryptUtil.ROTATE(r, 29) & 0xffffffffL; l = CryptUtil.ROTATE(l, 29) & 0xffffffffL; //s = ks.ks[0].deslong; /* * I don't know if it is worth the effort of loop unrolling the inner * loop */ if (enc != 0) { s = ks.ks[0].deslong; D_ENCRYPT(ref l, r, 0, s, ref u, ref t); /* 1 */ s = ks.ks[1].deslong; D_ENCRYPT(ref r, l, 2, s, ref u, ref t); /* 2 */ s = ks.ks[2].deslong; D_ENCRYPT(ref l, r, 4, s, ref u, ref t); /* 3 */ s = ks.ks[3].deslong; D_ENCRYPT(ref r, l, 6, s, ref u, ref t); /* 4 */ s = ks.ks[4].deslong; D_ENCRYPT(ref l, r, 8, s, ref u, ref t); /* 5 */ s = ks.ks[5].deslong; D_ENCRYPT(ref r, l, 10, s, ref u, ref t); /* 6 */ s = ks.ks[6].deslong; D_ENCRYPT(ref l, r, 12, s, ref u, ref t); /* 7 */ s = ks.ks[7].deslong; D_ENCRYPT(ref r, l, 14, s, ref u, ref t); /* 8 */ s = ks.ks[8].deslong; D_ENCRYPT(ref l, r, 16, s, ref u, ref t); /* 9 */ s = ks.ks[9].deslong; D_ENCRYPT(ref r, l, 18, s, ref u, ref t); /* 10 */ s = ks.ks[10].deslong; D_ENCRYPT(ref l, r, 20, s, ref u, ref t); /* 11 */ s = ks.ks[11].deslong; D_ENCRYPT(ref r, l, 22, s, ref u, ref t); /* 12 */ s = ks.ks[12].deslong; D_ENCRYPT(ref l, r, 24, s, ref u, ref t); /* 13 */ s = ks.ks[13].deslong; D_ENCRYPT(ref r, l, 26, s, ref u, ref t); /* 14 */ s = ks.ks[14].deslong; D_ENCRYPT(ref l, r, 28, s, ref u, ref t); /* 15 */ s = ks.ks[15].deslong; D_ENCRYPT(ref r, l, 30, s, ref u, ref t); /* 16 */ } else { s = ks.ks[15].deslong; D_ENCRYPT(ref l, r, 30, s, ref u, ref t); /* 16 */ s = ks.ks[14].deslong; D_ENCRYPT(ref r, l, 28, s, ref u, ref t); /* 15 */ s = ks.ks[13].deslong; D_ENCRYPT(ref l, r, 26, s, ref u, ref t); /* 14 */ s = ks.ks[12].deslong; D_ENCRYPT(ref r, l, 24, s, ref u, ref t); /* 13 */ s = ks.ks[11].deslong; D_ENCRYPT(ref l, r, 22, s, ref u, ref t); /* 12 */ s = ks.ks[10].deslong; D_ENCRYPT(ref r, l, 20, s, ref u, ref t); /* 11 */ s = ks.ks[9].deslong; D_ENCRYPT(ref l, r, 18, s, ref u, ref t); /* 10 */ s = ks.ks[8].deslong; D_ENCRYPT(ref r, l, 16, s, ref u, ref t); /* 9 */ s = ks.ks[7].deslong; D_ENCRYPT(ref l, r, 14, s, ref u, ref t); /* 8 */ s = ks.ks[6].deslong; D_ENCRYPT(ref r, l, 12, s, ref u, ref t); /* 7 */ s = ks.ks[5].deslong; D_ENCRYPT(ref l, r, 10, s, ref u, ref t); /* 6 */ s = ks.ks[4].deslong; D_ENCRYPT(ref r, l, 8, s, ref u, ref t); /* 5 */ s = ks.ks[3].deslong; D_ENCRYPT(ref l, r, 6, s, ref u, ref t); /* 4 */ s = ks.ks[2].deslong; D_ENCRYPT(ref r, l, 4, s, ref u, ref t); /* 3 */ s = ks.ks[1].deslong; D_ENCRYPT(ref l, r, 2, s, ref u, ref t); /* 2 */ s = ks.ks[0].deslong; D_ENCRYPT(ref r, l, 0, s, ref u, ref t); /* 1 */ } /* rotate and clear the top bits on machines with 8byte longs */ l = CryptUtil.ROTATE(l, 3) & 0xffffffffL; r = CryptUtil.ROTATE(r, 3) & 0xffffffffL; CryptUtil.FP(ref r, ref l); data[0] = l; data[1] = r; l = r = t = u = 0; }
public static void DES_set_key_unchecked(byte[] key, DES_key_schedule schedule) { ulong c = 0, d = 0, t = 0, s = 0, t2 = 0; byte[] in_Key; ulong[] k; int i; in_Key = key; int c2l_in_Key_startIdx = 0; CryptUtil.c2l(in_Key, ref c, ref c2l_in_Key_startIdx); CryptUtil.c2l(in_Key, ref d, ref c2l_in_Key_startIdx); /* * do PC1 in 47 simple operations :-) Thanks to John Fletcher * ([email protected]) for the inspiration. :-) */ CryptUtil.PERM_OP(ref d, ref c, ref t, 4, 0x0f0f0f0fL); CryptUtil.HPERM_OP(ref c, t, -2, 0xcccc0000L); CryptUtil.HPERM_OP(ref d, t, -2, 0xcccc0000L); CryptUtil.PERM_OP(ref d, ref c, ref t, 1, 0x55555555L); CryptUtil.PERM_OP(ref c, ref d, ref t, 8, 0x00ff00ffL); CryptUtil.PERM_OP(ref d, ref c, ref t, 1, 0x55555555L); d = (((d & 0x000000ffL) << (int)16L) | (d & 0x0000ff00L) | ((d & 0x00ff0000L) >> (int)16L) | ((c & 0xf0000000L) >> (int)4L)); c &= 0x0fffffffL; for (i = 0; i < ITERATIONS; i++) { k = schedule.ks[i].deslong; if (shifts2[i] != 0) { c = ((c >> (int)2L) | (c << (int)26L)); d = ((d >> (int)2L) | (d << (int)26L)); } else { c = ((c >> (int)1L) | (c << (int)27L)); d = ((d >> (int)1L) | (d << (int)27L)); } c &= 0x0fffffffL; d &= 0x0fffffffL; /* * could be a few less shifts but I am to lazy at this point in time * to investigate */ s = des_skb[0, (c) & 0x3f] | des_skb[1, ((c >> (int)6L) & 0x03) | ((c >> (int)7L) & 0x3c)] | des_skb[2, ((c >> (int)13L) & 0x0f) | ((c >> (int)14L) & 0x30)] | des_skb[3, ((c >> (int)20L) & 0x01) | ((c >> (int)21L) & 0x06) | ((c >> (int)22L) & 0x38)]; t = des_skb[4, (d) & 0x3f] | des_skb[5, ((d >> (int)7L) & 0x03) | ((d >> (int)8L) & 0x3c)] | des_skb[6, (d >> (int)15L) & 0x3f] | des_skb[7, ((d >> (int)21L) & 0x0f) | ((d >> (int)22L) & 0x30)]; /* table contained 0213 4657 */ t2 = ((t << (int)16L) | (s & 0x0000ffffL)) & 0xffffffffL; k[0] = CryptUtil.ROTATE(t2, 30) & 0xffffffffL; t2 = ((s >> (int)16L) | (t & 0xffff0000L)); k[1] = CryptUtil.ROTATE(t2, 26) & 0xffffffffL; } }