#include #include #include "des.h" const DES_LONG DES_SPtrans[8][64]={ { /* nibble 0 */ 0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, 0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L, 0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L, 0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L, 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L, 0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, 0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L, 0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L, 0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L, 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L, 0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, 0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L, 0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L, 0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L, 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L, 0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, },{ /* nibble 1 */ 0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, 0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L, 0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L, 0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L, 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L, 0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, 0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L, 0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L, 0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L, 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L, 0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, 0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L, 0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L, 0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L, 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L, 0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, },{ /* nibble 2 */ 0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, 0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L, 0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L, 0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L, 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L, 0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, 0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L, 0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L, 0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L, 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L, 0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, 0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L, 0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L, 0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L, 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L, 0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, },{ /* nibble 3 */ 0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, 0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L, 0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L, 0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L, 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L, 0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, 0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L, 0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L, 0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L, 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L, 0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, 0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L, 0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L, 0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L, 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L, 0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, },{ /* nibble 4 */ 0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, 0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L, 0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L, 0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L, 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L, 0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, 0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L, 0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L, 0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L, 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L, 0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, 0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L, 0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L, 0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L, 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L, 0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, },{ /* nibble 5 */ 0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, 0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L, 0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L, 0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L, 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L, 0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, 0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L, 0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L, 0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L, 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L, 0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, 0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L, 0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L, 0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L, 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L, 0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, },{ /* nibble 6 */ 0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, 0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L, 0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L, 0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L, 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L, 0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, 0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L, 0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L, 0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L, 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L, 0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, 0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L, 0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L, 0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L, 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L, 0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, },{ /* nibble 7 */ 0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, 0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L, 0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L, 0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L, 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L, 0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, 0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L, 0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L, 0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L, 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L, 0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, 0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L, 0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L, 0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L, 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L, 0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, }}; 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, }}; void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule) { static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; register DES_LONG c,d,t,s,t2; register const unsigned char *in; register DES_LONG *k; register int i; k = &schedule->ks->deslong[0]; in = &(*key)[0]; c2l(in,c); c2l(in,d); /* do PC1 in 47 simple operations :-) * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) * for the inspiration. :-) */ PERM_OP (d,c,t,4,0x0f0f0f0fL); HPERM_OP(c,t,-2,0xcccc0000L); HPERM_OP(d,t,-2,0xcccc0000L); PERM_OP (d,c,t,1,0x55555555L); PERM_OP (c,d,t,8,0x00ff00ffL); PERM_OP (d,c,t,1,0x55555555L); d= (((d&0x000000ffL)<<16L)| (d&0x0000ff00L) | ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L)); c&=0x0fffffffL; for (i=0; i>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); } else { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<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>> 6L)&0x03)|((c>> 7L)&0x3c)]| des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]| des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) | ((c>>22L)&0x38)]; t= des_skb[4][ (d )&0x3f ]| des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]| des_skb[6][ (d>>15L)&0x3f ]| des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)]; /* table contained 0213 4657 */ t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL; *(k++)=ROTATE(t2,30)&0xffffffffL; t2=((s>>16L)|(t&0xffff0000L)); *(k++)=ROTATE(t2,26)&0xffffffffL; } } void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc) { register DES_LONG l,r,t,u; #ifdef DES_PTR register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans; #endif #ifndef DES_UNROLL register int i; #endif register DES_LONG *s; r=data[0]; l=data[1]; /* 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 <71755.204@CompuServe.COM> * for pointing this out. */ /* clear the top bits on machines with 8byte longs */ r=ROTATE(r,29)&0xffffffffL; l=ROTATE(l,29)&0xffffffffL; s=ks->ks->deslong; /* I don't know if it is worth the effort of loop unrolling the * inner loop */ if (enc) { #ifdef DES_UNROLL D_ENCRYPT(l,r, 0); /* 1 */ D_ENCRYPT(r,l, 2); /* 2 */ D_ENCRYPT(l,r, 4); /* 3 */ D_ENCRYPT(r,l, 6); /* 4 */ D_ENCRYPT(l,r, 8); /* 5 */ D_ENCRYPT(r,l,10); /* 6 */ D_ENCRYPT(l,r,12); /* 7 */ D_ENCRYPT(r,l,14); /* 8 */ D_ENCRYPT(l,r,16); /* 9 */ D_ENCRYPT(r,l,18); /* 10 */ D_ENCRYPT(l,r,20); /* 11 */ D_ENCRYPT(r,l,22); /* 12 */ D_ENCRYPT(l,r,24); /* 13 */ D_ENCRYPT(r,l,26); /* 14 */ D_ENCRYPT(l,r,28); /* 15 */ D_ENCRYPT(r,l,30); /* 16 */ #else for (i=0; i<32; i+=8) { D_ENCRYPT(l,r,i+0); /* 1 */ D_ENCRYPT(r,l,i+2); /* 2 */ D_ENCRYPT(l,r,i+4); /* 3 */ D_ENCRYPT(r,l,i+6); /* 4 */ } #endif } else { #ifdef DES_UNROLL D_ENCRYPT(l,r,30); /* 16 */ D_ENCRYPT(r,l,28); /* 15 */ D_ENCRYPT(l,r,26); /* 14 */ D_ENCRYPT(r,l,24); /* 13 */ D_ENCRYPT(l,r,22); /* 12 */ D_ENCRYPT(r,l,20); /* 11 */ D_ENCRYPT(l,r,18); /* 10 */ D_ENCRYPT(r,l,16); /* 9 */ D_ENCRYPT(l,r,14); /* 8 */ D_ENCRYPT(r,l,12); /* 7 */ D_ENCRYPT(l,r,10); /* 6 */ D_ENCRYPT(r,l, 8); /* 5 */ D_ENCRYPT(l,r, 6); /* 4 */ D_ENCRYPT(r,l, 4); /* 3 */ D_ENCRYPT(l,r, 2); /* 2 */ D_ENCRYPT(r,l, 0); /* 1 */ #else for (i=30; i>0; i-=8) { D_ENCRYPT(l,r,i-0); /* 16 */ D_ENCRYPT(r,l,i-2); /* 15 */ D_ENCRYPT(l,r,i-4); /* 14 */ D_ENCRYPT(r,l,i-6); /* 13 */ } #endif } /* rotate and clear the top bits on machines with 8byte longs */ data[0]=ROTATE(l,3)&0xffffffffL; data[1]=ROTATE(r,3)&0xffffffffL; l=r=t=u=0; } void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3) { register DES_LONG l,r; l=data[0]; r=data[1]; IP(l,r); data[0]=l; data[1]=r; DES_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT); DES_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT); DES_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT); l=data[0]; r=data[1]; FP(r,l); data[0]=l; data[1]=r; } void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3) { register DES_LONG l,r; l=data[0]; r=data[1]; IP(l,r); data[0]=l; data[1]=r; DES_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT); DES_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT); DES_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT); l=data[0]; r=data[1]; FP(r,l); data[0]=l; data[1]=r; } void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output, long length, DES_key_schedule *ks1, DES_key_schedule *ks2, DES_key_schedule *ks3, DES_cblock *ivec, int enc) { register DES_LONG tin0,tin1; register DES_LONG tout0,tout1,xor0,xor1; register const unsigned char *in; unsigned char *out; register long l=length; DES_LONG tin[2]; unsigned char *iv; in=input; out=output; iv = &(*ivec)[0]; if (enc) { c2l(iv,tout0); c2l(iv,tout1); for (l-=8; l>=0; l-=8) { c2l(in,tin0); c2l(in,tin1); tin0^=tout0; tin1^=tout1; tin[0]=tin0; tin[1]=tin1; DES_encrypt3((DES_LONG *)tin,ks1,ks2,ks3); tout0=tin[0]; tout1=tin[1]; l2c(tout0,out); l2c(tout1,out); } if (l != -8) { c2ln(in,tin0,tin1,l+8); tin0^=tout0; tin1^=tout1; tin[0]=tin0; tin[1]=tin1; DES_encrypt3((DES_LONG *)tin,ks1,ks2,ks3); tout0=tin[0]; tout1=tin[1]; l2c(tout0,out); l2c(tout1,out); } iv = &(*ivec)[0]; l2c(tout0,iv); l2c(tout1,iv); } else { register DES_LONG t0,t1; c2l(iv,xor0); c2l(iv,xor1); for (l-=8; l>=0; l-=8) { c2l(in,tin0); c2l(in,tin1); t0=tin0; t1=tin1; tin[0]=tin0; tin[1]=tin1; DES_decrypt3((DES_LONG *)tin,ks1,ks2,ks3); tout0=tin[0]; tout1=tin[1]; tout0^=xor0; tout1^=xor1; l2c(tout0,out); l2c(tout1,out); xor0=t0; xor1=t1; } if (l != -8) { c2l(in,tin0); c2l(in,tin1); t0=tin0; t1=tin1; tin[0]=tin0; tin[1]=tin1; DES_decrypt3((DES_LONG *)tin,ks1,ks2,ks3); tout0=tin[0]; tout1=tin[1]; tout0^=xor0; tout1^=xor1; l2cn(tout0,tout1,out,l+8); xor0=t0; xor1=t1; } iv = &(*ivec)[0]; l2c(xor0,iv); l2c(xor1,iv); } tin0=tin1=tout0=tout1=xor0=xor1=0; tin[0]=tin[1]=0; } .