mirror of
https://github.com/cloudwu/skynet.git
synced 2026-07-22 11:03:12 +00:00
897 lines
24 KiB
C
897 lines
24 KiB
C
#include <lua.h>
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#include <lauxlib.h>
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#include <time.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#define SMALL_CHUNK 256
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/* the eight DES S-boxes */
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static uint32_t SB1[64] = {
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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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static uint32_t SB2[64] = {
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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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static uint32_t SB3[64] = {
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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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static uint32_t SB4[64] = {
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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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static uint32_t SB5[64] = {
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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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static uint32_t SB6[64] = {
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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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static uint32_t SB7[64] = {
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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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static uint32_t SB8[64] = {
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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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/* PC1: left and right halves bit-swap */
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static uint32_t LHs[16] = {
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0x00000000, 0x00000001, 0x00000100, 0x00000101,
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0x00010000, 0x00010001, 0x00010100, 0x00010101,
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0x01000000, 0x01000001, 0x01000100, 0x01000101,
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0x01010000, 0x01010001, 0x01010100, 0x01010101
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};
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static uint32_t RHs[16] = {
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0x00000000, 0x01000000, 0x00010000, 0x01010000,
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0x00000100, 0x01000100, 0x00010100, 0x01010100,
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0x00000001, 0x01000001, 0x00010001, 0x01010001,
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0x00000101, 0x01000101, 0x00010101, 0x01010101,
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};
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/* platform-independant 32-bit integer manipulation macros */
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#define GET_UINT32(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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| ( (uint32_t) (b)[(i) + 1] << 16 ) \
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| ( (uint32_t) (b)[(i) + 2] << 8 ) \
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| ( (uint32_t) (b)[(i) + 3] ); \
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}
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#define PUT_UINT32(n,b,i) \
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{ \
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(b)[(i) ] = (uint8_t) ( (n) >> 24 ); \
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(b)[(i) + 1] = (uint8_t) ( (n) >> 16 ); \
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(b)[(i) + 2] = (uint8_t) ( (n) >> 8 ); \
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(b)[(i) + 3] = (uint8_t) ( (n) ); \
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}
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/* Initial Permutation macro */
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#define DES_IP(X,Y) \
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{ \
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T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \
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T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \
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T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \
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T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \
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Y = ((Y << 1) | (Y >> 31)) & 0xFFFFFFFF; \
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T = (X ^ Y) & 0xAAAAAAAA; Y ^= T; X ^= T; \
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X = ((X << 1) | (X >> 31)) & 0xFFFFFFFF; \
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}
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/* Final Permutation macro */
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#define DES_FP(X,Y) \
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{ \
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X = ((X << 31) | (X >> 1)) & 0xFFFFFFFF; \
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T = (X ^ Y) & 0xAAAAAAAA; X ^= T; Y ^= T; \
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Y = ((Y << 31) | (Y >> 1)) & 0xFFFFFFFF; \
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T = ((Y >> 8) ^ X) & 0x00FF00FF; X ^= T; Y ^= (T << 8); \
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T = ((Y >> 2) ^ X) & 0x33333333; X ^= T; Y ^= (T << 2); \
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T = ((X >> 16) ^ Y) & 0x0000FFFF; Y ^= T; X ^= (T << 16); \
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T = ((X >> 4) ^ Y) & 0x0F0F0F0F; Y ^= T; X ^= (T << 4); \
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}
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/* DES round macro */
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#define DES_ROUND(X,Y) \
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{ \
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T = *SK++ ^ X; \
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Y ^= SB8[ (T ) & 0x3F ] ^ \
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SB6[ (T >> 8) & 0x3F ] ^ \
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SB4[ (T >> 16) & 0x3F ] ^ \
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SB2[ (T >> 24) & 0x3F ]; \
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\
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T = *SK++ ^ ((X << 28) | (X >> 4)); \
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Y ^= SB7[ (T ) & 0x3F ] ^ \
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SB5[ (T >> 8) & 0x3F ] ^ \
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SB3[ (T >> 16) & 0x3F ] ^ \
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SB1[ (T >> 24) & 0x3F ]; \
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}
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/* DES key schedule */
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static void
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des_main_ks( uint32_t SK[32], const uint8_t key[8] ) {
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int i;
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uint32_t X, Y, T;
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GET_UINT32( X, key, 0 );
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GET_UINT32( Y, key, 4 );
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/* Permuted Choice 1 */
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T = ((Y >> 4) ^ X) & 0x0F0F0F0F; X ^= T; Y ^= (T << 4);
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T = ((Y ) ^ X) & 0x10101010; X ^= T; Y ^= (T );
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X = (LHs[ (X ) & 0xF] << 3) | (LHs[ (X >> 8) & 0xF ] << 2)
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| (LHs[ (X >> 16) & 0xF] << 1) | (LHs[ (X >> 24) & 0xF ] )
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| (LHs[ (X >> 5) & 0xF] << 7) | (LHs[ (X >> 13) & 0xF ] << 6)
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| (LHs[ (X >> 21) & 0xF] << 5) | (LHs[ (X >> 29) & 0xF ] << 4);
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Y = (RHs[ (Y >> 1) & 0xF] << 3) | (RHs[ (Y >> 9) & 0xF ] << 2)
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| (RHs[ (Y >> 17) & 0xF] << 1) | (RHs[ (Y >> 25) & 0xF ] )
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| (RHs[ (Y >> 4) & 0xF] << 7) | (RHs[ (Y >> 12) & 0xF ] << 6)
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| (RHs[ (Y >> 20) & 0xF] << 5) | (RHs[ (Y >> 28) & 0xF ] << 4);
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X &= 0x0FFFFFFF;
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Y &= 0x0FFFFFFF;
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/* calculate subkeys */
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for( i = 0; i < 16; i++ )
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{
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if( i < 2 || i == 8 || i == 15 )
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{
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X = ((X << 1) | (X >> 27)) & 0x0FFFFFFF;
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Y = ((Y << 1) | (Y >> 27)) & 0x0FFFFFFF;
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}
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else
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{
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X = ((X << 2) | (X >> 26)) & 0x0FFFFFFF;
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Y = ((Y << 2) | (Y >> 26)) & 0x0FFFFFFF;
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}
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*SK++ = ((X << 4) & 0x24000000) | ((X << 28) & 0x10000000)
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| ((X << 14) & 0x08000000) | ((X << 18) & 0x02080000)
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| ((X << 6) & 0x01000000) | ((X << 9) & 0x00200000)
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| ((X >> 1) & 0x00100000) | ((X << 10) & 0x00040000)
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| ((X << 2) & 0x00020000) | ((X >> 10) & 0x00010000)
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| ((Y >> 13) & 0x00002000) | ((Y >> 4) & 0x00001000)
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| ((Y << 6) & 0x00000800) | ((Y >> 1) & 0x00000400)
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| ((Y >> 14) & 0x00000200) | ((Y ) & 0x00000100)
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| ((Y >> 5) & 0x00000020) | ((Y >> 10) & 0x00000010)
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| ((Y >> 3) & 0x00000008) | ((Y >> 18) & 0x00000004)
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| ((Y >> 26) & 0x00000002) | ((Y >> 24) & 0x00000001);
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*SK++ = ((X << 15) & 0x20000000) | ((X << 17) & 0x10000000)
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| ((X << 10) & 0x08000000) | ((X << 22) & 0x04000000)
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| ((X >> 2) & 0x02000000) | ((X << 1) & 0x01000000)
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| ((X << 16) & 0x00200000) | ((X << 11) & 0x00100000)
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| ((X << 3) & 0x00080000) | ((X >> 6) & 0x00040000)
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| ((X << 15) & 0x00020000) | ((X >> 4) & 0x00010000)
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| ((Y >> 2) & 0x00002000) | ((Y << 8) & 0x00001000)
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| ((Y >> 14) & 0x00000808) | ((Y >> 9) & 0x00000400)
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| ((Y ) & 0x00000200) | ((Y << 7) & 0x00000100)
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| ((Y >> 7) & 0x00000020) | ((Y >> 3) & 0x00000011)
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| ((Y << 2) & 0x00000004) | ((Y >> 21) & 0x00000002);
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}
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}
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/* DES 64-bit block encryption/decryption */
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static void
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des_crypt( const uint32_t SK[32], const uint8_t input[8], uint8_t output[8] ) {
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uint32_t X, Y, T;
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GET_UINT32( X, input, 0 );
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GET_UINT32( Y, input, 4 );
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DES_IP( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_ROUND( Y, X ); DES_ROUND( X, Y );
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DES_FP( Y, X );
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PUT_UINT32( Y, output, 0 );
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PUT_UINT32( X, output, 4 );
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}
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static int
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lrandomkey(lua_State *L) {
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char tmp[8];
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int i;
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for (i=0;i<8;i++) {
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tmp[i] = random() & 0xff;
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}
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lua_pushlstring(L, tmp, 8);
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return 1;
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}
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static void
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des_key(lua_State *L, uint32_t SK[32]) {
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size_t keysz = 0;
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const void * key = luaL_checklstring(L, 1, &keysz);
|
|
if (keysz != 8) {
|
|
luaL_error(L, "Invalid key size %d, need 8 bytes", (int)keysz);
|
|
}
|
|
des_main_ks(SK, key);
|
|
}
|
|
|
|
static int
|
|
ldesencode(lua_State *L) {
|
|
uint32_t SK[32];
|
|
des_key(L, SK);
|
|
|
|
size_t textsz = 0;
|
|
const uint8_t * text = (const uint8_t *)luaL_checklstring(L, 2, &textsz);
|
|
size_t chunksz = (textsz + 8) & ~7;
|
|
uint8_t tmp[SMALL_CHUNK];
|
|
uint8_t *buffer = tmp;
|
|
if (chunksz > SMALL_CHUNK) {
|
|
buffer = lua_newuserdata(L, chunksz);
|
|
}
|
|
int i;
|
|
for (i=0;i<(int)textsz-7;i+=8) {
|
|
des_crypt(SK, text+i, buffer+i);
|
|
}
|
|
int bytes = textsz - i;
|
|
uint8_t tail[8];
|
|
int j;
|
|
for (j=0;j<8;j++) {
|
|
if (j < bytes) {
|
|
tail[j] = text[i+j];
|
|
} else if (j==bytes) {
|
|
tail[j] = 0x80;
|
|
} else {
|
|
tail[j] = 0;
|
|
}
|
|
}
|
|
des_crypt(SK, tail, buffer+i);
|
|
lua_pushlstring(L, (const char *)buffer, chunksz);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
ldesdecode(lua_State *L) {
|
|
uint32_t ESK[32];
|
|
des_key(L, ESK);
|
|
uint32_t SK[32];
|
|
int i;
|
|
for( i = 0; i < 32; i += 2 ) {
|
|
SK[i] = ESK[30 - i];
|
|
SK[i + 1] = ESK[31 - i];
|
|
}
|
|
size_t textsz = 0;
|
|
const uint8_t *text = (const uint8_t *)luaL_checklstring(L, 2, &textsz);
|
|
if ((textsz & 7) || textsz == 0) {
|
|
return luaL_error(L, "Invalid des crypt text length %d", (int)textsz);
|
|
}
|
|
uint8_t tmp[SMALL_CHUNK];
|
|
uint8_t *buffer = tmp;
|
|
if (textsz > SMALL_CHUNK) {
|
|
buffer = lua_newuserdata(L, textsz);
|
|
}
|
|
for (i=0;i<textsz;i+=8) {
|
|
des_crypt(SK, text+i, buffer+i);
|
|
}
|
|
int padding = 1;
|
|
for (i=textsz-1;i>=textsz-8;i--) {
|
|
if (buffer[i] == 0) {
|
|
padding++;
|
|
} else if (buffer[i] == 0x80) {
|
|
break;
|
|
} else {
|
|
return luaL_error(L, "Invalid des crypt text");
|
|
}
|
|
}
|
|
if (padding > 8) {
|
|
return luaL_error(L, "Invalid des crypt text");
|
|
}
|
|
lua_pushlstring(L, (const char *)buffer, textsz - padding);
|
|
return 1;
|
|
}
|
|
|
|
|
|
static void
|
|
Hash(const char * str, int sz, uint8_t key[8]) {
|
|
uint32_t djb_hash = 5381L;
|
|
uint32_t js_hash = 1315423911L;
|
|
|
|
int i;
|
|
for (i=0;i<sz;i++) {
|
|
uint8_t c = (uint8_t)str[i];
|
|
djb_hash += (djb_hash << 5) + c;
|
|
js_hash ^= ((js_hash << 5) + c + (js_hash >> 2));
|
|
}
|
|
|
|
key[0] = djb_hash & 0xff;
|
|
key[1] = (djb_hash >> 8) & 0xff;
|
|
key[2] = (djb_hash >> 16) & 0xff;
|
|
key[3] = (djb_hash >> 24) & 0xff;
|
|
|
|
key[4] = js_hash & 0xff;
|
|
key[5] = (js_hash >> 8) & 0xff;
|
|
key[6] = (js_hash >> 16) & 0xff;
|
|
key[7] = (js_hash >> 24) & 0xff;
|
|
}
|
|
|
|
static int
|
|
lhashkey(lua_State *L) {
|
|
size_t sz = 0;
|
|
const char * key = luaL_checklstring(L, 1, &sz);
|
|
uint8_t realkey[8];
|
|
Hash(key,(int)sz,realkey);
|
|
lua_pushlstring(L, (const char *)realkey, 8);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
ltohex(lua_State *L) {
|
|
static char hex[] = "0123456789abcdef";
|
|
size_t sz = 0;
|
|
const uint8_t * text = (const uint8_t *)luaL_checklstring(L, 1, &sz);
|
|
char tmp[SMALL_CHUNK];
|
|
char *buffer = tmp;
|
|
if (sz > SMALL_CHUNK/2) {
|
|
buffer = lua_newuserdata(L, sz * 2);
|
|
}
|
|
int i;
|
|
for (i=0;i<sz;i++) {
|
|
buffer[i*2] = hex[text[i] >> 4];
|
|
buffer[i*2+1] = hex[text[i] & 0xf];
|
|
}
|
|
lua_pushlstring(L, buffer, sz * 2);
|
|
return 1;
|
|
}
|
|
|
|
#define HEX(v,c) { char tmp = (char) c; if (tmp >= '0' && tmp <= '9') { v = tmp-'0'; } else { v = tmp - 'a' + 10; } }
|
|
|
|
static int
|
|
lfromhex(lua_State *L) {
|
|
size_t sz = 0;
|
|
const char * text = luaL_checklstring(L, 1, &sz);
|
|
if (sz & 2) {
|
|
return luaL_error(L, "Invalid hex text size %d", (int)sz);
|
|
}
|
|
char tmp[SMALL_CHUNK];
|
|
char *buffer = tmp;
|
|
if (sz > SMALL_CHUNK*2) {
|
|
buffer = lua_newuserdata(L, sz / 2);
|
|
}
|
|
int i;
|
|
for (i=0;i<sz;i+=2) {
|
|
uint8_t hi,low;
|
|
HEX(hi, text[i]);
|
|
HEX(low, text[i+1]);
|
|
if (hi > 16 || low > 16) {
|
|
return luaL_error(L, "Invalid hex text", text);
|
|
}
|
|
buffer[i/2] = hi<<4 | low;
|
|
}
|
|
lua_pushlstring(L, buffer, i/2);
|
|
return 1;
|
|
}
|
|
|
|
// Constants are the integer part of the sines of integers (in radians) * 2^32.
|
|
const uint32_t k[64] = {
|
|
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee ,
|
|
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501 ,
|
|
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be ,
|
|
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821 ,
|
|
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa ,
|
|
0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8 ,
|
|
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed ,
|
|
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a ,
|
|
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c ,
|
|
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70 ,
|
|
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05 ,
|
|
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665 ,
|
|
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039 ,
|
|
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1 ,
|
|
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1 ,
|
|
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 };
|
|
|
|
// r specifies the per-round shift amounts
|
|
const uint32_t r[] = {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
|
|
5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
|
|
4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
|
|
6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21};
|
|
|
|
// leftrotate function definition
|
|
#define LEFTROTATE(x, c) (((x) << (c)) | ((x) >> (32 - (c))))
|
|
|
|
static void
|
|
hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
|
|
uint32_t w[16];
|
|
uint32_t a, b, c, d, f, g, temp;
|
|
int i;
|
|
|
|
a = 0x67452301u;
|
|
b = 0xefcdab89u;
|
|
c = 0x98badcfeu;
|
|
d = 0x10325476u;
|
|
|
|
for (i=0;i<16;i+=4) {
|
|
w[i] = x[1];
|
|
w[i+1] = x[0];
|
|
w[i+2] = y[1];
|
|
w[i+3] = y[0];
|
|
}
|
|
|
|
for(i = 0; i<64; i++) {
|
|
if (i < 16) {
|
|
f = (b & c) | ((~b) & d);
|
|
g = i;
|
|
} else if (i < 32) {
|
|
f = (d & b) | ((~d) & c);
|
|
g = (5*i + 1) % 16;
|
|
} else if (i < 48) {
|
|
f = b ^ c ^ d;
|
|
g = (3*i + 5) % 16;
|
|
} else {
|
|
f = c ^ (b | (~d));
|
|
g = (7*i) % 16;
|
|
}
|
|
|
|
temp = d;
|
|
d = c;
|
|
c = b;
|
|
b = b + LEFTROTATE((a + f + k[i] + w[g]), r[i]);
|
|
a = temp;
|
|
|
|
}
|
|
|
|
result[0] = c^d;
|
|
result[1] = a^b;
|
|
}
|
|
|
|
static void
|
|
read64(lua_State *L, uint32_t xx[2], uint32_t yy[2]) {
|
|
size_t sz = 0;
|
|
const uint8_t *x = (const uint8_t *)luaL_checklstring(L, 1, &sz);
|
|
if (sz != 8) {
|
|
luaL_error(L, "Invalid uint64 x");
|
|
}
|
|
const uint8_t *y = (const uint8_t *)luaL_checklstring(L, 2, &sz);
|
|
if (sz != 8) {
|
|
luaL_error(L, "Invalid uint64 y");
|
|
}
|
|
xx[0] = x[0] | x[1]<<8 | x[2]<<16 | x[3]<<24;
|
|
xx[1] = x[4] | x[5]<<8 | x[6]<<16 | x[7]<<24;
|
|
yy[0] = y[0] | y[1]<<8 | y[2]<<16 | y[3]<<24;
|
|
yy[1] = y[4] | y[5]<<8 | y[6]<<16 | y[7]<<24;
|
|
}
|
|
|
|
static int
|
|
pushqword(lua_State *L, uint32_t result[2]) {
|
|
uint8_t tmp[8];
|
|
tmp[0] = result[0] & 0xff;
|
|
tmp[1] = (result[0] >> 8 )& 0xff;
|
|
tmp[2] = (result[0] >> 16 )& 0xff;
|
|
tmp[3] = (result[0] >> 24 )& 0xff;
|
|
tmp[4] = result[1] & 0xff;
|
|
tmp[5] = (result[1] >> 8 )& 0xff;
|
|
tmp[6] = (result[1] >> 16 )& 0xff;
|
|
tmp[7] = (result[1] >> 24 )& 0xff;
|
|
|
|
lua_pushlstring(L, (const char *)tmp, 8);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
lhmac64(lua_State *L) {
|
|
uint32_t x[2], y[2];
|
|
read64(L, x, y);
|
|
uint32_t result[2];
|
|
hmac(x,y,result);
|
|
return pushqword(L, result);
|
|
}
|
|
|
|
/*
|
|
8bytes key
|
|
string text
|
|
*/
|
|
static int
|
|
lhmac_hash(lua_State *L) {
|
|
uint32_t key[2];
|
|
size_t sz = 0;
|
|
const uint8_t *x = (const uint8_t *)luaL_checklstring(L, 1, &sz);
|
|
if (sz != 8) {
|
|
luaL_error(L, "Invalid uint64 key");
|
|
}
|
|
key[0] = x[0] | x[1]<<8 | x[2]<<16 | x[3]<<24;
|
|
key[1] = x[4] | x[5]<<8 | x[6]<<16 | x[7]<<24;
|
|
const char * text = luaL_checklstring(L, 2, &sz);
|
|
uint8_t h[8];
|
|
Hash(text,(int)sz,h);
|
|
uint32_t htext[2];
|
|
htext[0] = h[0] | h[1]<<8 | h[2]<<16 | h[3]<<24;
|
|
htext[1] = h[4] | h[5]<<8 | h[6]<<16 | h[7]<<24;
|
|
uint32_t result[2];
|
|
hmac(htext,key,result);
|
|
return pushqword(L, result);
|
|
}
|
|
|
|
// powmodp64 for DH-key exchange
|
|
|
|
// The biggest 64bit prime
|
|
#define P 0xffffffffffffffc5ull
|
|
|
|
static inline uint64_t
|
|
mul_mod_p(uint64_t a, uint64_t b) {
|
|
uint64_t m = 0;
|
|
while(b) {
|
|
if(b&1) {
|
|
uint64_t t = P-a;
|
|
if ( m >= t) {
|
|
m -= t;
|
|
} else {
|
|
m += a;
|
|
}
|
|
}
|
|
if (a >= P - a) {
|
|
a = a * 2 - P;
|
|
} else {
|
|
a = a * 2;
|
|
}
|
|
b>>=1;
|
|
}
|
|
return m;
|
|
}
|
|
|
|
static inline uint64_t
|
|
pow_mod_p(uint64_t a, uint64_t b) {
|
|
if (b==1) {
|
|
return a;
|
|
}
|
|
uint64_t t = pow_mod_p(a, b>>1);
|
|
t = mul_mod_p(t,t);
|
|
if (b % 2) {
|
|
t = mul_mod_p(t, a);
|
|
}
|
|
return t;
|
|
}
|
|
|
|
// calc a^b % p
|
|
static uint64_t
|
|
powmodp(uint64_t a, uint64_t b) {
|
|
if (a > P)
|
|
a%=P;
|
|
return pow_mod_p(a,b);
|
|
}
|
|
|
|
static void
|
|
push64(lua_State *L, uint64_t r) {
|
|
uint8_t tmp[8];
|
|
tmp[0] = r & 0xff;
|
|
tmp[1] = (r >> 8 )& 0xff;
|
|
tmp[2] = (r >> 16 )& 0xff;
|
|
tmp[3] = (r >> 24 )& 0xff;
|
|
tmp[4] = (r >> 32 )& 0xff;
|
|
tmp[5] = (r >> 40 )& 0xff;
|
|
tmp[6] = (r >> 48 )& 0xff;
|
|
tmp[7] = (r >> 56 )& 0xff;
|
|
|
|
lua_pushlstring(L, (const char *)tmp, 8);
|
|
}
|
|
|
|
static int
|
|
ldhsecret(lua_State *L) {
|
|
uint32_t x[2], y[2];
|
|
read64(L, x, y);
|
|
uint64_t r = powmodp((uint64_t)x[0] | (uint64_t)x[1]<<32,
|
|
(uint64_t)y[0] | (uint64_t)y[1]<<32);
|
|
|
|
push64(L, r);
|
|
|
|
return 1;
|
|
}
|
|
|
|
#define G 5
|
|
|
|
static int
|
|
ldhexchange(lua_State *L) {
|
|
size_t sz = 0;
|
|
const uint8_t *x = (const uint8_t *)luaL_checklstring(L, 1, &sz);
|
|
if (sz != 8) {
|
|
luaL_error(L, "Invalid dh uint64 key");
|
|
}
|
|
uint32_t xx[2];
|
|
xx[0] = x[0] | x[1]<<8 | x[2]<<16 | x[3]<<24;
|
|
xx[1] = x[4] | x[5]<<8 | x[6]<<16 | x[7]<<24;
|
|
|
|
uint64_t r = powmodp(5, (uint64_t)xx[0] | (uint64_t)xx[1]<<32);
|
|
push64(L, r);
|
|
return 1;
|
|
}
|
|
|
|
// base64
|
|
|
|
static int
|
|
lb64encode(lua_State *L) {
|
|
static const char* encoding = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
size_t sz = 0;
|
|
const uint8_t * text = (const uint8_t *)luaL_checklstring(L, 1, &sz);
|
|
int encode_sz = (sz + 2)/3*4;
|
|
char tmp[SMALL_CHUNK];
|
|
char *buffer = tmp;
|
|
if (encode_sz > SMALL_CHUNK) {
|
|
buffer = lua_newuserdata(L, encode_sz);
|
|
}
|
|
int i,j;
|
|
j=0;
|
|
for (i=0;i<(int)sz-2;i+=3) {
|
|
uint32_t v = text[i] << 16 | text[i+1] << 8 | text[i+2];
|
|
buffer[j] = encoding[v >> 18];
|
|
buffer[j+1] = encoding[(v >> 12) & 0x3f];
|
|
buffer[j+2] = encoding[(v >> 6) & 0x3f];
|
|
buffer[j+3] = encoding[(v) & 0x3f];
|
|
j+=4;
|
|
}
|
|
int padding = sz-i;
|
|
uint32_t v;
|
|
switch(padding) {
|
|
case 1 :
|
|
v = text[i];
|
|
buffer[j] = encoding[v >> 2];
|
|
buffer[j+1] = encoding[(v & 3) << 4];
|
|
buffer[j+2] = '=';
|
|
buffer[j+3] = '=';
|
|
break;
|
|
case 2 :
|
|
v = text[i] << 8 | text[i+1];
|
|
buffer[j] = encoding[v >> 10];
|
|
buffer[j+1] = encoding[(v >> 4) & 0x3f];
|
|
buffer[j+2] = encoding[(v & 0xf) << 2];
|
|
buffer[j+3] = '=';
|
|
break;
|
|
}
|
|
lua_pushlstring(L, buffer, encode_sz);
|
|
return 1;
|
|
}
|
|
|
|
static inline int
|
|
b64index(uint8_t c) {
|
|
static const int decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
|
|
int decoding_size = sizeof(decoding)/sizeof(decoding[0]);
|
|
if (c<43) {
|
|
return -1;
|
|
}
|
|
c -= 43;
|
|
if (c>=decoding_size)
|
|
return -1;
|
|
return decoding[c];
|
|
}
|
|
|
|
static int
|
|
lb64decode(lua_State *L) {
|
|
size_t sz = 0;
|
|
const uint8_t * text = (const uint8_t *)luaL_checklstring(L, 1, &sz);
|
|
int decode_sz = (sz+3)/4*3;
|
|
char tmp[SMALL_CHUNK];
|
|
char *buffer = tmp;
|
|
if (decode_sz > SMALL_CHUNK) {
|
|
buffer = lua_newuserdata(L, decode_sz);
|
|
}
|
|
int i,j;
|
|
int output = 0;
|
|
for (i=0;i<sz;) {
|
|
int padding = 0;
|
|
int c[4];
|
|
for (j=0;j<4;) {
|
|
if (i>=sz) {
|
|
return luaL_error(L, "Invalid base64 text");
|
|
}
|
|
c[j] = b64index(text[i]);
|
|
if (c[j] == -1) {
|
|
++i;
|
|
continue;
|
|
}
|
|
if (c[j] == -2) {
|
|
++padding;
|
|
}
|
|
++i;
|
|
++j;
|
|
}
|
|
uint32_t v;
|
|
switch (padding) {
|
|
case 0:
|
|
v = (unsigned)c[0] << 18 | c[1] << 12 | c[2] << 6 | c[3];
|
|
buffer[output] = v >> 16;
|
|
buffer[output+1] = (v >> 8) & 0xff;
|
|
buffer[output+2] = v & 0xff;
|
|
output += 3;
|
|
break;
|
|
case 1:
|
|
if (c[3] != -2 || (c[2] & 3)!=0) {
|
|
return luaL_error(L, "Invalid base64 text");
|
|
}
|
|
v = (unsigned)c[0] << 10 | c[1] << 4 | c[2] >> 2 ;
|
|
buffer[output] = v >> 8;
|
|
buffer[output+1] = v & 0xff;
|
|
output += 2;
|
|
break;
|
|
case 2:
|
|
if (c[3] != -2 || c[2] != -2 || (c[1] & 0xf) !=0) {
|
|
return luaL_error(L, "Invalid base64 text");
|
|
}
|
|
v = (unsigned)c[0] << 2 | c[1] >> 4;
|
|
buffer[output] = v;
|
|
++ output;
|
|
break;
|
|
default:
|
|
return luaL_error(L, "Invalid base64 text");
|
|
}
|
|
}
|
|
lua_pushlstring(L, buffer, output);
|
|
return 1;
|
|
}
|
|
|
|
// defined in lsha1.c
|
|
int lsha1(lua_State *L);
|
|
int lhmac_sha1(lua_State *L);
|
|
|
|
int
|
|
luaopen_crypt(lua_State *L) {
|
|
luaL_checkversion(L);
|
|
srandom(time(NULL));
|
|
luaL_Reg l[] = {
|
|
{ "hashkey", lhashkey },
|
|
{ "randomkey", lrandomkey },
|
|
{ "desencode", ldesencode },
|
|
{ "desdecode", ldesdecode },
|
|
{ "hexencode", ltohex },
|
|
{ "hexdecode", lfromhex },
|
|
{ "hmac64", lhmac64 },
|
|
{ "dhexchange", ldhexchange },
|
|
{ "dhsecret", ldhsecret },
|
|
{ "base64encode", lb64encode },
|
|
{ "base64decode", lb64decode },
|
|
{ "sha1", lsha1 },
|
|
{ "hmac_sha1", lhmac_sha1 },
|
|
{ "hmac_hash", lhmac_hash },
|
|
{ NULL, NULL },
|
|
};
|
|
luaL_newlib(L,l);
|
|
return 1;
|
|
}
|