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<?php /* * Fill in all four below and click the blue 'eval();' button. * ------------------ */ $unhashedServerSeed = ''; $nonce = -1; $clientSeed = ''; $qty = -1; /* ------------------ */ if ($unhashedServerSeed == '' || $nonce < 0 || $clientSeed == '' || $qty <= 0) { echo "Fill in details"; return; } define('MAX_HEX_SEGMENTS', 6); define('HEX_SEGMENT_SIZE', 2); define('BASE_FOR_HEX_CONVERSION', 256); define('HASH_TYPE', 'sha256'); function calculateDecimalValue(string $preResult): float { $decimalValue = 0; for ($i = 0; $i < MAX_HEX_SEGMENTS; $i++) { $hexValue = substr($preResult, HEX_SEGMENT_SIZE * $i, HEX_SEGMENT_SIZE); $decimalValue += hexdec($hexValue) / pow(BASE_FOR_HEX_CONVERSION, $i + 1); } return $decimalValue; } function getProvablyFairResult(string $init, int $qty): array { $preResult = hash(HASH_TYPE, $init); $decimalValue = calculateDecimalValue($preResult); $result = (int) ($decimalValue * $qty) + 1; return [ 'preResult' => $preResult, 'result' => $result, ]; } $unhashedServerSeed = preg_replace( "/\r|\n/", "", $unhashedServerSeed); $clientSeed = preg_replace( "/\r|\n/", "", $clientSeed); $nrand = strlen($clientSeed); $stringToHash = "$unhashedServerSeed-$clientSeed-$nrand-$nonce"; $result = getProvablyFairResult($stringToHash, $qty); echo "Result: {$result['result']}";
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
2 jumps found. (Code = 47) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
2 jumps found. (Code = 47) Position 1 = 12, Position 2 = 14
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 17
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
Branch analysis from position: 11
Branch analysis from position: 8
filename:       /in/CQLj9
function name:  (null)
number of ops:  59
compiled vars:  !0 = $unhashedServerSeed, !1 = $nonce, !2 = $clientSeed, !3 = $qty, !4 = $nrand, !5 = $stringToHash, !6 = $result
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    6     0  E >   ASSIGN                                                       !0, ''
    7     1        ASSIGN                                                       !1, -1
    8     2        ASSIGN                                                       !2, ''
    9     3        ASSIGN                                                       !3, -1
   13     4        IS_EQUAL                                             ~11     !0, ''
          5      > JMPNZ_EX                                             ~11     ~11, ->8
          6    >   IS_SMALLER                                           ~12     !1, 0
          7        BOOL                                                 ~11     ~12
          8    > > JMPNZ_EX                                             ~11     ~11, ->11
          9    >   IS_EQUAL                                             ~13     !2, ''
         10        BOOL                                                 ~11     ~13
         11    > > JMPNZ_EX                                             ~11     ~11, ->14
         12    >   IS_SMALLER_OR_EQUAL                                  ~14     !3, 0
         13        BOOL                                                 ~11     ~14
         14    > > JMPZ                                                         ~11, ->17
   14    15    >   ECHO                                                         'Fill+in+details'
   15    16      > RETURN                                                       null
   18    17    >   INIT_FCALL                                                   'define'
         18        SEND_VAL                                                     'MAX_HEX_SEGMENTS'
         19        SEND_VAL                                                     6
         20        DO_ICALL                                                     
   19    21        INIT_FCALL                                                   'define'
         22        SEND_VAL                                                     'HEX_SEGMENT_SIZE'
         23        SEND_VAL                                                     2
         24        DO_ICALL                                                     
   20    25        INIT_FCALL                                                   'define'
         26        SEND_VAL                                                     'BASE_FOR_HEX_CONVERSION'
         27        SEND_VAL                                                     256
         28        DO_ICALL                                                     
   21    29        INIT_FCALL                                                   'define'
         30        SEND_VAL                                                     'HASH_TYPE'
         31        SEND_VAL                                                     'sha256'
         32        DO_ICALL                                                     
   44    33        FRAMELESS_ICALL_3                preg_replace        ~19     '%2F%0D%7C%0A%2F', ''
         34        OP_DATA                                                      !0
         35        ASSIGN                                                       !0, ~19
   45    36        FRAMELESS_ICALL_3                preg_replace        ~21     '%2F%0D%7C%0A%2F', ''
         37        OP_DATA                                                      !2
         38        ASSIGN                                                       !2, ~21
   46    39        STRLEN                                               ~23     !2
         40        ASSIGN                                                       !4, ~23
   47    41        ROPE_INIT                                         7  ~26     !0
         42        ROPE_ADD                                          1  ~26     ~26, '-'
         43        ROPE_ADD                                          2  ~26     ~26, !2
         44        ROPE_ADD                                          3  ~26     ~26, '-'
         45        ROPE_ADD                                          4  ~26     ~26, !4
         46        ROPE_ADD                                          5  ~26     ~26, '-'
         47        ROPE_END                                          6  ~25     ~26, !1
         48        ASSIGN                                                       !5, ~25
   49    49        INIT_FCALL                                                   'getprovablyfairresult'
         50        SEND_VAR                                                     !5
         51        SEND_VAR                                                     !3
         52        DO_FCALL                                          0  $31     
         53        ASSIGN                                                       !6, $31
   51    54        NOP                                                          
         55        FETCH_DIM_R                                          ~33     !6, 'result'
         56        FAST_CONCAT                                          ~34     'Result%3A+', ~33
         57        ECHO                                                         ~34
         58      > RETURN                                                       1

Function calculatedecimalvalue:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 22
Branch analysis from position: 22
2 jumps found. (Code = 44) Position 1 = 25, Position 2 = 4
Branch analysis from position: 25
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
2 jumps found. (Code = 44) Position 1 = 25, Position 2 = 4
Branch analysis from position: 25
Branch analysis from position: 4
filename:       /in/CQLj9
function name:  calculateDecimalValue
number of ops:  29
compiled vars:  !0 = $preResult, !1 = $decimalValue, !2 = $i, !3 = $hexValue
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   23     0  E >   RECV                                                 !0      
   25     1        ASSIGN                                                       !1, 0
   26     2        ASSIGN                                                       !2, 0
          3      > JMP                                                          ->22
   27     4    >   FETCH_CONSTANT                                       ~6      'HEX_SEGMENT_SIZE'
          5        MUL                                                  ~7      !2, ~6
          6        FETCH_CONSTANT                                       ~8      'HEX_SEGMENT_SIZE'
          7        FRAMELESS_ICALL_3                substr              ~9      !0, ~7
          8        OP_DATA                                                      ~8
          9        ASSIGN                                                       !3, ~9
   28    10        INIT_FCALL                                                   'hexdec'
         11        SEND_VAR                                                     !3
         12        DO_ICALL                                             $11     
         13        INIT_FCALL                                                   'pow'
         14        FETCH_CONSTANT                                       ~12     'BASE_FOR_HEX_CONVERSION'
         15        SEND_VAL                                                     ~12
         16        ADD                                                  ~13     !2, 1
         17        SEND_VAL                                                     ~13
         18        DO_ICALL                                             $14     
         19        DIV                                                  ~15     $11, $14
         20        ASSIGN_OP                                         1          !1, ~15
   26    21        PRE_INC                                                      !2
         22    >   FETCH_CONSTANT                                       ~18     'MAX_HEX_SEGMENTS'
         23        IS_SMALLER                                                   !2, ~18
         24      > JMPNZ                                                        ~19, ->4
   30    25    >   VERIFY_RETURN_TYPE                                           !1
         26      > RETURN                                                       !1
   31    27*       VERIFY_RETURN_TYPE                                           
         28*     > RETURN                                                       null

End of function calculatedecimalvalue

Function getprovablyfairresult:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/CQLj9
function name:  getProvablyFairResult
number of ops:  22
compiled vars:  !0 = $init, !1 = $qty, !2 = $preResult, !3 = $decimalValue, !4 = $result
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   33     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
   35     2        INIT_FCALL                                                   'hash'
          3        FETCH_CONSTANT                                       ~5      'HASH_TYPE'
          4        SEND_VAL                                                     ~5
          5        SEND_VAR                                                     !0
          6        DO_ICALL                                             $6      
          7        ASSIGN                                                       !2, $6
   36     8        INIT_FCALL                                                   'calculatedecimalvalue'
          9        SEND_VAR                                                     !2
         10        DO_FCALL                                          0  $8      
         11        ASSIGN                                                       !3, $8
   37    12        MUL                                                  ~10     !3, !1
         13        CAST                                              4  ~11     ~10
         14        ADD                                                  ~12     ~11, 1
         15        ASSIGN                                                       !4, ~12
   39    16        INIT_ARRAY                                           ~14     !2, 'preResult'
   40    17        ADD_ARRAY_ELEMENT                                    ~14     !4, 'result'
         18        VERIFY_RETURN_TYPE                                           ~14
         19      > RETURN                                                       ~14
   42    20*       VERIFY_RETURN_TYPE                                           
         21*     > RETURN                                                       null

End of function getprovablyfairresult

Generated using Vulcan Logic Dumper, using php 8.5.0


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178.4 ms | 1602 KiB | 19 Q