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| author | Aleksey Veresov <aleksey@veresov.pro> | 2020-10-17 23:22:48 +0300 |
|---|---|---|
| committer | Aleksey Veresov <aleksey@veresov.pro> | 2020-10-17 23:22:48 +0300 |
| commit | c7104149207859a7b52d231421c5946df23e5538 (patch) | |
| tree | 4f983110e6ffcfb6c10fd12d57c3868e6e50f24a | |
| parent | f463b9b0dcfb6ed349c29b73e9a7d9e35e9f5b8e (diff) | |
| download | cryptrobber-c7104149207859a7b52d231421c5946df23e5538.tar cryptrobber-c7104149207859a7b52d231421c5946df23e5538.tar.xz cryptrobber-c7104149207859a7b52d231421c5946df23e5538.zip | |
Almost complete.
| -rw-r--r-- | main.sts | 54 |
1 files changed, 43 insertions, 11 deletions
@@ -1,8 +1,29 @@ module ia32/elf/begin.sts module cipher.sts +module keygen.sts [ sd 0 swap drop ] +defword nicedist + 1 float_iload 8 float_iload float_div +exit + +defword calcdist + top 1a - as calcdist.textfr + local calcdist.fr + 0 do dup 1a = until + dup word_size mul as calcdist.i + calcdist.i calcdist.fr + @ float_fload + calcdist.i calcdost.textfr + @ float_fload + float_sub float_fstore dup float_fload float_fload + float_mul float_fstore calcdist.t calcdist.fr + ! + od drop + 0 as calcdist.i do calcdist.i 19 = until + float_fload float_fload float_add float_fstore + calcdist.i 1 + as calcdist.i od + float_fload float_sqrt nicedist float_less +exit + defword checktext as checktext.length local checktext.text @@ -10,26 +31,37 @@ defword checktext ; 26 latin letters: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 local checktext.fr + ; count how much of each letter is in text: + 0 as checktext.count checktext.length do 1 - - dup checktext.text + @ + dup word_size mul checktext.text + @ dup dup 'z' > 0 = swap 'a' < 0 = mul if - dup 'z' swap - dup checktext.fr + @ + 1 swap ! + dup 'z' swap - word_size mul checktext.fr + dup @ + 1 swap ! fi dup dup 'Z' > 0 = swap 'A' < 0 = mul if - dup 'Z' swap - dup checktext.fr + @ + 1 swap ! + dup 'Z' swap - word_size mul checktext.fr + dup @ + 1 swap ! fi drop + checktext.count 1 + as checktext.count dup 0 = untilod drop +; ZERO DIVISION SHALL NOT PASS +checktext.count 0 = if + drop drop drop drop drop drop drop drop drop drop drop drop drop + drop drop drop drop drop drop drop drop drop drop drop drop drop +0 exit fi + ; normalize: + 0 do dup 1a = until + dup word_size mul checktext.fr + dup @ float_iload + checktext.count float_iload + float_div float_fstore swap ! + od drop ; Decide if text is real: - 1 + freq_eng calcdist if 1 else + 0 fi ; Remove frequencies from stack: sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd sd exit -defword keygen - drop 31 32 33 3 -exit - -set_entry +set_entry float_init ; this is program with floats ; read file into stack 0 do sys_read 0 = until swap 1 + @@ -53,8 +85,8 @@ set_entry dup 0 = untilod drop drop local plaintext - ; check deciphering attempt, exit if Ok - length checktext dup until drop + ; check deciphering attempt, exit if Ok or keylen = max (16) + keylen 10 = if eeeee else length checktext fi dup until drop ; else remove the text from stack and place keylen back 0 do dup length = until swap drop 1 + |