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<?php $cipher_alg = MCRYPT_RIJNDAEL_128; $shared_key = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"; $key = pack("H*", $shared_key); $init_vector = "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"; $iv = pack("H*", $init_vector); echo mcrypt_decrypt($cipher_alg, $key, mcrypt_encrypt( $cipher_alg, $key, 'This is a test', MCRYPT_MODE_CBC, $iv), MCRYPT_MODE_CBC, $iv);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TZ4Op
function name:  (null)
number of ops:  32
compiled vars:  !0 = $cipher_alg, !1 = $shared_key, !2 = $key, !3 = $init_vector, !4 = $iv
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   FETCH_CONSTANT                                   ~5      'MCRYPT_RIJNDAEL_128'
          1        ASSIGN                                                   !0, ~5
    4     2        ASSIGN                                                   !1, 'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF'
    5     3        INIT_FCALL                                               'pack'
          4        SEND_VAL                                                 'H%2A'
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $8      
          7        ASSIGN                                                   !2, $8
    6     8        ASSIGN                                                   !3, 'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF'
    7     9        INIT_FCALL                                               'pack'
         10        SEND_VAL                                                 'H%2A'
         11        SEND_VAR                                                 !3
         12        DO_ICALL                                         $11     
         13        ASSIGN                                                   !4, $11
    9    14        INIT_FCALL_BY_NAME                                       'mcrypt_decrypt'
         15        SEND_VAR_EX                                              !0
         16        SEND_VAR_EX                                              !2
         17        INIT_FCALL_BY_NAME                                       'mcrypt_encrypt'
   10    18        SEND_VAR_EX                                              !0
         19        SEND_VAR_EX                                              !2
         20        SEND_VAL_EX                                              'This+is+a+test'
         21        FETCH_CONSTANT                                   ~13     'MCRYPT_MODE_CBC'
         22        SEND_VAL_EX                                              ~13
         23        SEND_VAR_EX                                              !4
         24        DO_FCALL                                      0  $14     
         25        SEND_VAR_NO_REF_EX                                       $14
         26        FETCH_CONSTANT                                   ~15     'MCRYPT_MODE_CBC'
         27        SEND_VAL_EX                                              ~15
    9    28        SEND_VAR_EX                                              !4
         29        DO_FCALL                                      0  $16     
         30        ECHO                                                     $16
   10    31      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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