--- /dev/null
+/*
+ * @(#)UnixCrypt.java 0.9 96/11/25
+ *
+ * Copyright (c) 1996 Aki Yoshida. All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software
+ * for non-commercial or commercial purposes and without fee is
+ * hereby granted provided that this copyright notice appears in
+ * all copies.
+ */
+
+/**
+ * Unix crypt(3C) utility
+ *
+ * @version 0.9, 11/25/96
+ * @author Aki Yoshida
+ */
+
+/**
+ * modified April 2001
+ * by Iris Van den Broeke, Daniel Deville
+ */
+
+package org.eclipse.jetty.util.security;
+
+
+/* ------------------------------------------------------------ */
+/**
+ * Unix Crypt. Implements the one way cryptography used by Unix systems for
+ * simple password protection.
+ *
+ * @version $Id: UnixCrypt.java,v 1.1 2005/10/05 14:09:14 janb Exp $
+ * @author Greg Wilkins (gregw)
+ */
+public class UnixCrypt
+{
+
+ /* (mostly) Standard DES Tables from Tom Truscott */
+ private static final byte[] IP = { /* initial permutation */
+ 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8, 57, 49, 41, 33, 25, 17, 9, 1,
+ 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7 };
+
+ /* The final permutation is the inverse of IP - no table is necessary */
+ private static final byte[] ExpandTr = { /* expansion operation */
+ 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29,
+ 28, 29, 30, 31, 32, 1 };
+
+ private static final byte[] PC1 = { /* permuted choice table 1 */
+ 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
+
+ 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4 };
+
+ private static final byte[] Rotates = { /* PC1 rotation schedule */
+ 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
+
+ private static final byte[] PC2 = { /* permuted choice table 2 */
+ 9, 18, 14, 17, 11, 24, 1, 5, 22, 25, 3, 28, 15, 6, 21, 10, 35, 38, 23, 19, 12, 4, 26, 8, 43, 54, 16, 7, 27, 20, 13, 2,
+
+ 0, 0, 41, 52, 31, 37, 47, 55, 0, 0, 30, 40, 51, 45, 33, 48, 0, 0, 44, 49, 39, 56, 34, 53, 0, 0, 46, 42, 50, 36, 29, 32 };
+
+ private static final byte[][] S = { /* 48->32 bit substitution tables */
+ /* S[1] */
+ { 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9,
+ 7, 3, 10, 5, 0, 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 },
+ /* S[2] */
+ { 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12,
+ 6, 9, 3, 2, 15, 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 },
+ /* S[3] */
+ { 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2,
+ 12, 5, 10, 14, 7, 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 },
+ /* S[4] */
+ { 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3,
+ 14, 5, 2, 8, 4, 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 },
+ /* S[5] */
+ { 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12,
+ 5, 6, 3, 0, 14, 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 },
+ /* S[6] */
+ { 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4,
+ 10, 1, 13, 11, 6, 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 },
+ /* S[7] */
+ { 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, 1, 4, 11, 13, 12, 3, 7, 14, 10, 15,
+ 6, 8, 0, 5, 9, 2, 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 },
+ /* S[8] */
+ { 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10,
+ 13, 15, 3, 5, 8, 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } };
+
+ private static final byte[] P32Tr = { /* 32-bit permutation function */
+ 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25 };
+
+ private static final byte[] CIFP = { /*
+ * compressed/interleaved
+ * permutation
+ */
+ 1, 2, 3, 4, 17, 18, 19, 20, 5, 6, 7, 8, 21, 22, 23, 24, 9, 10, 11, 12, 25, 26, 27, 28, 13, 14, 15, 16, 29, 30, 31, 32,
+
+ 33, 34, 35, 36, 49, 50, 51, 52, 37, 38, 39, 40, 53, 54, 55, 56, 41, 42, 43, 44, 57, 58, 59, 60, 45, 46, 47, 48, 61, 62, 63, 64 };
+
+ private static final byte[] ITOA64 = { /* 0..63 => ascii-64 */
+ (byte) '.', (byte) '/', (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'A',
+ (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F', (byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K', (byte) 'L', (byte) 'M',
+ (byte) 'N', (byte) 'O', (byte) 'P', (byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U', (byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y',
+ (byte) 'Z', (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e', (byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j', (byte) 'k',
+ (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o', (byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't', (byte) 'u', (byte) 'v', (byte) 'w',
+ (byte) 'x', (byte) 'y', (byte) 'z' };
+
+ /* ===== Tables that are initialized at run time ==================== */
+
+ private static final byte[] A64TOI = new byte[128]; /* ascii-64 => 0..63 */
+
+ /* Initial key schedule permutation */
+ private static final long[][] PC1ROT = new long[16][16];
+
+ /* Subsequent key schedule rotation permutations */
+ private static final long[][][] PC2ROT = new long[2][16][16];
+
+ /* Initial permutation/expansion table */
+ private static final long[][] IE3264 = new long[8][16];
+
+ /* Table that combines the S, P, and E operations. */
+ private static final long[][] SPE = new long[8][64];
+
+ /* compressed/interleaved => final permutation table */
+ private static final long[][] CF6464 = new long[16][16];
+
+ /* ==================================== */
+
+ static
+ {
+ byte[] perm = new byte[64];
+ byte[] temp = new byte[64];
+
+ // inverse table.
+ for (int i = 0; i < 64; i++)
+ A64TOI[ITOA64[i]] = (byte) i;
+
+ // PC1ROT - bit reverse, then PC1, then Rotate, then PC2
+ for (int i = 0; i < 64; i++)
+ perm[i] = (byte) 0;
+
+ for (int i = 0; i < 64; i++)
+ {
+ int k;
+ if ((k = PC2[i]) == 0) continue;
+ k += Rotates[0] - 1;
+ if ((k % 28) < Rotates[0]) k -= 28;
+ k = PC1[k];
+ if (k > 0)
+ {
+ k--;
+ k = (k | 0x07) - (k & 0x07);
+ k++;
+ }
+ perm[i] = (byte) k;
+ }
+ init_perm(PC1ROT, perm, 8);
+
+ // PC2ROT - PC2 inverse, then Rotate, then PC2
+ for (int j = 0; j < 2; j++)
+ {
+ int k;
+ for (int i = 0; i < 64; i++)
+ perm[i] = temp[i] = 0;
+ for (int i = 0; i < 64; i++)
+ {
+ if ((k = PC2[i]) == 0) continue;
+ temp[k - 1] = (byte) (i + 1);
+ }
+ for (int i = 0; i < 64; i++)
+ {
+ if ((k = PC2[i]) == 0) continue;
+ k += j;
+ if ((k % 28) <= j) k -= 28;
+ perm[i] = temp[k];
+ }
+
+ init_perm(PC2ROT[j], perm, 8);
+ }
+
+ // Bit reverse, intial permupation, expantion
+ for (int i = 0; i < 8; i++)
+ {
+ for (int j = 0; j < 8; j++)
+ {
+ int k = (j < 2) ? 0 : IP[ExpandTr[i * 6 + j - 2] - 1];
+ if (k > 32)
+ k -= 32;
+ else if (k > 0) k--;
+ if (k > 0)
+ {
+ k--;
+ k = (k | 0x07) - (k & 0x07);
+ k++;
+ }
+ perm[i * 8 + j] = (byte) k;
+ }
+ }
+
+ init_perm(IE3264, perm, 8);
+
+ // Compression, final permutation, bit reverse
+ for (int i = 0; i < 64; i++)
+ {
+ int k = IP[CIFP[i] - 1];
+ if (k > 0)
+ {
+ k--;
+ k = (k | 0x07) - (k & 0x07);
+ k++;
+ }
+ perm[k - 1] = (byte) (i + 1);
+ }
+
+ init_perm(CF6464, perm, 8);
+
+ // SPE table
+ for (int i = 0; i < 48; i++)
+ perm[i] = P32Tr[ExpandTr[i] - 1];
+ for (int t = 0; t < 8; t++)
+ {
+ for (int j = 0; j < 64; j++)
+ {
+ int k = (((j >> 0) & 0x01) << 5) | (((j >> 1) & 0x01) << 3)
+ | (((j >> 2) & 0x01) << 2)
+ | (((j >> 3) & 0x01) << 1)
+ | (((j >> 4) & 0x01) << 0)
+ | (((j >> 5) & 0x01) << 4);
+ k = S[t][k];
+ k = (((k >> 3) & 0x01) << 0) | (((k >> 2) & 0x01) << 1) | (((k >> 1) & 0x01) << 2) | (((k >> 0) & 0x01) << 3);
+ for (int i = 0; i < 32; i++)
+ temp[i] = 0;
+ for (int i = 0; i < 4; i++)
+ temp[4 * t + i] = (byte) ((k >> i) & 0x01);
+ long kk = 0;
+ for (int i = 24; --i >= 0;)
+ kk = ((kk << 1) | ((long) temp[perm[i] - 1]) << 32 | (temp[perm[i + 24] - 1]));
+
+ SPE[t][j] = to_six_bit(kk);
+ }
+ }
+ }
+
+ /**
+ * You can't call the constructer.
+ */
+ private UnixCrypt()
+ {
+ }
+
+ /**
+ * Returns the transposed and split code of a 24-bit code into a 4-byte
+ * code, each having 6 bits.
+ */
+ private static int to_six_bit(int num)
+ {
+ return (((num << 26) & 0xfc000000) | ((num << 12) & 0xfc0000) | ((num >> 2) & 0xfc00) | ((num >> 16) & 0xfc));
+ }
+
+ /**
+ * Returns the transposed and split code of two 24-bit code into two 4-byte
+ * code, each having 6 bits.
+ */
+ private static long to_six_bit(long num)
+ {
+ return (((num << 26) & 0xfc000000fc000000L) | ((num << 12) & 0xfc000000fc0000L) | ((num >> 2) & 0xfc000000fc00L) | ((num >> 16) & 0xfc000000fcL));
+ }
+
+ /**
+ * Returns the permutation of the given 64-bit code with the specified
+ * permutataion table.
+ */
+ private static long perm6464(long c, long[][] p)
+ {
+ long out = 0L;
+ for (int i = 8; --i >= 0;)
+ {
+ int t = (int) (0x00ff & c);
+ c >>= 8;
+ long tp = p[i << 1][t & 0x0f];
+ out |= tp;
+ tp = p[(i << 1) + 1][t >> 4];
+ out |= tp;
+ }
+ return out;
+ }
+
+ /**
+ * Returns the permutation of the given 32-bit code with the specified
+ * permutataion table.
+ */
+ private static long perm3264(int c, long[][] p)
+ {
+ long out = 0L;
+ for (int i = 4; --i >= 0;)
+ {
+ int t = (0x00ff & c);
+ c >>= 8;
+ long tp = p[i << 1][t & 0x0f];
+ out |= tp;
+ tp = p[(i << 1) + 1][t >> 4];
+ out |= tp;
+ }
+ return out;
+ }
+
+ /**
+ * Returns the key schedule for the given key.
+ */
+ private static long[] des_setkey(long keyword)
+ {
+ long K = perm6464(keyword, PC1ROT);
+ long[] KS = new long[16];
+ KS[0] = K & ~0x0303030300000000L;
+
+ for (int i = 1; i < 16; i++)
+ {
+ KS[i] = K;
+ K = perm6464(K, PC2ROT[Rotates[i] - 1]);
+
+ KS[i] = K & ~0x0303030300000000L;
+ }
+ return KS;
+ }
+
+ /**
+ * Returns the DES encrypted code of the given word with the specified
+ * environment.
+ */
+ private static long des_cipher(long in, int salt, int num_iter, long[] KS)
+ {
+ salt = to_six_bit(salt);
+ long L = in;
+ long R = L;
+ L &= 0x5555555555555555L;
+ R = (R & 0xaaaaaaaa00000000L) | ((R >> 1) & 0x0000000055555555L);
+ L = ((((L << 1) | (L << 32)) & 0xffffffff00000000L) | ((R | (R >> 32)) & 0x00000000ffffffffL));
+
+ L = perm3264((int) (L >> 32), IE3264);
+ R = perm3264((int) (L & 0xffffffff), IE3264);
+
+ while (--num_iter >= 0)
+ {
+ for (int loop_count = 0; loop_count < 8; loop_count++)
+ {
+ long kp;
+ long B;
+ long k;
+
+ kp = KS[(loop_count << 1)];
+ k = ((R >> 32) ^ R) & salt & 0xffffffffL;
+ k |= (k << 32);
+ B = (k ^ R ^ kp);
+
+ L ^= (SPE[0][(int) ((B >> 58) & 0x3f)] ^ SPE[1][(int) ((B >> 50) & 0x3f)]
+ ^ SPE[2][(int) ((B >> 42) & 0x3f)]
+ ^ SPE[3][(int) ((B >> 34) & 0x3f)]
+ ^ SPE[4][(int) ((B >> 26) & 0x3f)]
+ ^ SPE[5][(int) ((B >> 18) & 0x3f)]
+ ^ SPE[6][(int) ((B >> 10) & 0x3f)] ^ SPE[7][(int) ((B >> 2) & 0x3f)]);
+
+ kp = KS[(loop_count << 1) + 1];
+ k = ((L >> 32) ^ L) & salt & 0xffffffffL;
+ k |= (k << 32);
+ B = (k ^ L ^ kp);
+
+ R ^= (SPE[0][(int) ((B >> 58) & 0x3f)] ^ SPE[1][(int) ((B >> 50) & 0x3f)]
+ ^ SPE[2][(int) ((B >> 42) & 0x3f)]
+ ^ SPE[3][(int) ((B >> 34) & 0x3f)]
+ ^ SPE[4][(int) ((B >> 26) & 0x3f)]
+ ^ SPE[5][(int) ((B >> 18) & 0x3f)]
+ ^ SPE[6][(int) ((B >> 10) & 0x3f)] ^ SPE[7][(int) ((B >> 2) & 0x3f)]);
+ }
+ // swap L and R
+ L ^= R;
+ R ^= L;
+ L ^= R;
+ }
+ L = ((((L >> 35) & 0x0f0f0f0fL) | (((L & 0xffffffff) << 1) & 0xf0f0f0f0L)) << 32 | (((R >> 35) & 0x0f0f0f0fL) | (((R & 0xffffffff) << 1) & 0xf0f0f0f0L)));
+
+ L = perm6464(L, CF6464);
+
+ return L;
+ }
+
+ /**
+ * Initializes the given permutation table with the mapping table.
+ */
+ private static void init_perm(long[][] perm, byte[] p, int chars_out)
+ {
+ for (int k = 0; k < chars_out * 8; k++)
+ {
+
+ int l = p[k] - 1;
+ if (l < 0) continue;
+ int i = l >> 2;
+ l = 1 << (l & 0x03);
+ for (int j = 0; j < 16; j++)
+ {
+ int s = ((k & 0x07) + ((7 - (k >> 3)) << 3));
+ if ((j & l) != 0x00) perm[i][j] |= (1L << s);
+ }
+ }
+ }
+
+ /**
+ * Encrypts String into crypt (Unix) code.
+ *
+ * @param key the key to be encrypted
+ * @param setting the salt to be used
+ * @return the encrypted String
+ */
+ public static String crypt(String key, String setting)
+ {
+ long constdatablock = 0L; /* encryption constant */
+ byte[] cryptresult = new byte[13]; /* encrypted result */
+ long keyword = 0L;
+ /* invalid parameters! */
+ if (key == null || setting == null) return "*"; // will NOT match under
+ // ANY circumstances!
+
+ int keylen = key.length();
+
+ for (int i = 0; i < 8; i++)
+ {
+ keyword = (keyword << 8) | ((i < keylen) ? 2 * key.charAt(i) : 0);
+ }
+
+ long[] KS = des_setkey(keyword);
+
+ int salt = 0;
+ for (int i = 2; --i >= 0;)
+ {
+ char c = (i < setting.length()) ? setting.charAt(i) : '.';
+ cryptresult[i] = (byte) c;
+ salt = (salt << 6) | (0x00ff & A64TOI[c]);
+ }
+
+ long rsltblock = des_cipher(constdatablock, salt, 25, KS);
+
+ cryptresult[12] = ITOA64[(((int) rsltblock) << 2) & 0x3f];
+ rsltblock >>= 4;
+ for (int i = 12; --i >= 2;)
+ {
+ cryptresult[i] = ITOA64[((int) rsltblock) & 0x3f];
+ rsltblock >>= 6;
+ }
+
+ return new String(cryptresult, 0, 13);
+ }
+
+ public static void main(String[] arg)
+ {
+ if (arg.length != 2)
+ {
+ System.err.println("Usage - java org.eclipse.util.UnixCrypt <key> <salt>");
+ System.exit(1);
+ }
+
+ System.err.println("Crypt=" + crypt(arg[0], arg[1]));
+ }
+
+}
projects / gigi.git / blobdiff