+ (a)=(a)^(t)^(t>>(16-(n))))
+
+static const DES_LONG des_skb[8][64] = {
+ {
+ /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+ 0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L,
+ 0x00010000L, 0x00010010L, 0x20010000L, 0x20010010L,
+ 0x00000800L, 0x00000810L, 0x20000800L, 0x20000810L,
+ 0x00010800L, 0x00010810L, 0x20010800L, 0x20010810L,
+ 0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L,
+ 0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L,
+ 0x00000820L, 0x00000830L, 0x20000820L, 0x20000830L,
+ 0x00010820L, 0x00010830L, 0x20010820L, 0x20010830L,
+ 0x00080000L, 0x00080010L, 0x20080000L, 0x20080010L,
+ 0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L,
+ 0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L,
+ 0x00090800L, 0x00090810L, 0x20090800L, 0x20090810L,
+ 0x00080020L, 0x00080030L, 0x20080020L, 0x20080030L,
+ 0x00090020L, 0x00090030L, 0x20090020L, 0x20090030L,
+ 0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L,
+ 0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L,
+ },
+ {
+ /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
+ 0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L,
+ 0x00200000L, 0x02200000L, 0x00202000L, 0x02202000L,
+ 0x00000004L, 0x02000004L, 0x00002004L, 0x02002004L,
+ 0x00200004L, 0x02200004L, 0x00202004L, 0x02202004L,
+ 0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L,
+ 0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L,
+ 0x00000404L, 0x02000404L, 0x00002404L, 0x02002404L,
+ 0x00200404L, 0x02200404L, 0x00202404L, 0x02202404L,
+ 0x10000000L, 0x12000000L, 0x10002000L, 0x12002000L,
+ 0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L,
+ 0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L,
+ 0x10200004L, 0x12200004L, 0x10202004L, 0x12202004L,
+ 0x10000400L, 0x12000400L, 0x10002400L, 0x12002400L,
+ 0x10200400L, 0x12200400L, 0x10202400L, 0x12202400L,
+ 0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L,
+ 0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L,
+ },
+ {
+ /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
+ 0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L,
+ 0x01000000L, 0x01000001L, 0x01040000L, 0x01040001L,
+ 0x00000002L, 0x00000003L, 0x00040002L, 0x00040003L,
+ 0x01000002L, 0x01000003L, 0x01040002L, 0x01040003L,
+ 0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L,
+ 0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L,
+ 0x00000202L, 0x00000203L, 0x00040202L, 0x00040203L,
+ 0x01000202L, 0x01000203L, 0x01040202L, 0x01040203L,
+ 0x08000000L, 0x08000001L, 0x08040000L, 0x08040001L,
+ 0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L,
+ 0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L,
+ 0x09000002L, 0x09000003L, 0x09040002L, 0x09040003L,
+ 0x08000200L, 0x08000201L, 0x08040200L, 0x08040201L,
+ 0x09000200L, 0x09000201L, 0x09040200L, 0x09040201L,
+ 0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L,
+ 0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L,
+ },
+ {
+ /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
+ 0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L,
+ 0x00000008L, 0x00100008L, 0x00000108L, 0x00100108L,
+ 0x00001000L, 0x00101000L, 0x00001100L, 0x00101100L,
+ 0x00001008L, 0x00101008L, 0x00001108L, 0x00101108L,
+ 0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L,
+ 0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L,
+ 0x04001000L, 0x04101000L, 0x04001100L, 0x04101100L,
+ 0x04001008L, 0x04101008L, 0x04001108L, 0x04101108L,
+ 0x00020000L, 0x00120000L, 0x00020100L, 0x00120100L,
+ 0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L,
+ 0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L,
+ 0x00021008L, 0x00121008L, 0x00021108L, 0x00121108L,
+ 0x04020000L, 0x04120000L, 0x04020100L, 0x04120100L,
+ 0x04020008L, 0x04120008L, 0x04020108L, 0x04120108L,
+ 0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L,
+ 0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+ 0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L,
+ 0x00000004L, 0x10000004L, 0x00010004L, 0x10010004L,
+ 0x20000000L, 0x30000000L, 0x20010000L, 0x30010000L,
+ 0x20000004L, 0x30000004L, 0x20010004L, 0x30010004L,
+ 0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L,
+ 0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L,
+ 0x20100000L, 0x30100000L, 0x20110000L, 0x30110000L,
+ 0x20100004L, 0x30100004L, 0x20110004L, 0x30110004L,
+ 0x00001000L, 0x10001000L, 0x00011000L, 0x10011000L,
+ 0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L,
+ 0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L,
+ 0x20001004L, 0x30001004L, 0x20011004L, 0x30011004L,
+ 0x00101000L, 0x10101000L, 0x00111000L, 0x10111000L,
+ 0x00101004L, 0x10101004L, 0x00111004L, 0x10111004L,
+ 0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L,
+ 0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
+ 0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L,
+ 0x00000400L, 0x08000400L, 0x00000408L, 0x08000408L,
+ 0x00020000L, 0x08020000L, 0x00020008L, 0x08020008L,
+ 0x00020400L, 0x08020400L, 0x00020408L, 0x08020408L,
+ 0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L,
+ 0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L,
+ 0x00020001L, 0x08020001L, 0x00020009L, 0x08020009L,
+ 0x00020401L, 0x08020401L, 0x00020409L, 0x08020409L,
+ 0x02000000L, 0x0A000000L, 0x02000008L, 0x0A000008L,
+ 0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L,
+ 0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L,
+ 0x02020400L, 0x0A020400L, 0x02020408L, 0x0A020408L,
+ 0x02000001L, 0x0A000001L, 0x02000009L, 0x0A000009L,
+ 0x02000401L, 0x0A000401L, 0x02000409L, 0x0A000409L,
+ 0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L,
+ 0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
+ 0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L,
+ 0x01000000L, 0x01000100L, 0x01080000L, 0x01080100L,
+ 0x00000010L, 0x00000110L, 0x00080010L, 0x00080110L,
+ 0x01000010L, 0x01000110L, 0x01080010L, 0x01080110L,
+ 0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L,
+ 0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L,
+ 0x00200010L, 0x00200110L, 0x00280010L, 0x00280110L,
+ 0x01200010L, 0x01200110L, 0x01280010L, 0x01280110L,
+ 0x00000200L, 0x00000300L, 0x00080200L, 0x00080300L,
+ 0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L,
+ 0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L,
+ 0x01000210L, 0x01000310L, 0x01080210L, 0x01080310L,
+ 0x00200200L, 0x00200300L, 0x00280200L, 0x00280300L,
+ 0x01200200L, 0x01200300L, 0x01280200L, 0x01280300L,
+ 0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L,
+ 0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L,
+ },
+ {
+ /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
+ 0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L,
+ 0x00000002L, 0x04000002L, 0x00040002L, 0x04040002L,
+ 0x00002000L, 0x04002000L, 0x00042000L, 0x04042000L,
+ 0x00002002L, 0x04002002L, 0x00042002L, 0x04042002L,
+ 0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L,
+ 0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L,
+ 0x00002020L, 0x04002020L, 0x00042020L, 0x04042020L,
+ 0x00002022L, 0x04002022L, 0x00042022L, 0x04042022L,
+ 0x00000800L, 0x04000800L, 0x00040800L, 0x04040800L,
+ 0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L,
+ 0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L,
+ 0x00002802L, 0x04002802L, 0x00042802L, 0x04042802L,
+ 0x00000820L, 0x04000820L, 0x00040820L, 0x04040820L,
+ 0x00000822L, 0x04000822L, 0x00040822L, 0x04040822L,
+ 0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L,
+ 0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L,
+ }
+};
+
+int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule)
+{
+ if (DES_check_key) {
+ return DES_set_key_checked(key, schedule);
+ } else {
+ DES_set_key_unchecked(key, schedule);
+ return 0;
+ }
+}
+
+/*-
+ * return 0 if key parity is odd (correct),