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  1. def chain_add(seq, end):
  2.     a = len(seq)
  3.     for i in range(end-a):
  4.         seq += chr(48+(ord(seq[i])+ord(seq[i+1]))%32%10)
  5.     return seq
  6.  
  7. def sequent(seq):
  8.     res = [0]*len(seq);seq=list(seq)
  9.     for z in range(len(seq)):
  10.         b=min(range(len(seq)),key=lambda i:seq[i])
  11.         res[b]=z
  12.         seq[b]="~"
  13.     return res
  14.  
  15. def transpose(text, keys, disrupt=False):
  16.     if disrupt:
  17.         num_rows, len_last = divmod(len(text),len(keys))
  18.         num_rows+=1
  19.         if len_last==0:len_last=len(keys)
  20.         d_rows = []
  21.         for i in range(num_rows):
  22.             d_rows += [[]]
  23.         text_index = 0
  24.         current_row = 0
  25.         stop_key = 0
  26.         stop_index = keys.index(stop_key)
  27.         while current_row < num_rows:
  28.             d_rows[current_row]=list(text[text_index:text_index+stop_index])
  29.             text_index+=stop_index
  30.             stop_index+=1
  31.             if stop_index>len(keys):
  32.                 stop_key=(stop_key+1)%len(keys)
  33.                 stop_index=keys.index(stop_key)
  34.             current_row+=1
  35.         current_row = 0
  36.         stop_key = 0
  37.         stop_len = len(keys)-keys.index(stop_key)
  38.         while current_row < num_rows:
  39.             d_rows[current_row]+=list(text[text_index:text_index+stop_len])
  40.             text_index+=stop_len
  41.             stop_len-=1
  42.             if stop_len<1:
  43.                 stop_key+=1
  44.                 stop_len=len(keys)-keys.index(stop_key)
  45.                 current_row+=1
  46.             current_row+=1
  47.         d_rows[-1]+=['']*(len(keys)-len(d_rows[-1]))
  48.         columns = []
  49.         for j in range(len(keys)):
  50.             columns+=[''.join(i[j]for i in d_rows)]
  51.     else:
  52.         columns = ['']*len(keys)
  53.         for t in range(len(text)):
  54.             columns[t%len(keys)]+=text[t]
  55.     res = [0]*len(keys)
  56.     for index in range(len(keys)):
  57.         res[keys[index]]=columns[index]
  58.     return''.join(res)
  59.  
  60. def checkerboard(message, seq, word, null):
  61.     trans = {".":seq[-2:], "#":seq[-1]*2};m=65;res=''
  62.     for i in range(len(word)):
  63.         trans[word[i]]=seq[i]
  64.         for z in[0,1]:
  65.             while chr(m)in word:
  66.                 m+=1
  67.             trans[chr(m)]=seq[z-2]+seq[i];m+=1
  68.     while m<90:
  69.         for i in seq[len(word):]:
  70.             for z in[0,1]:
  71.                 while chr(m)in word:
  72.                     m+=1
  73.                 trans[chr(m)]=seq[z-2]+i;m+=1
  74.     for i in message:
  75.         if i.isdigit():
  76.             res+=i
  77.         else:
  78.             res+=trans[i]
  79.     return res+null[:-len(res)%5]
  80.  
  81. def vic_cipher(message, keyword, phrase, date, agent, m_id, null):
  82.     s1=sequent(phrase[:10])
  83.     s2=sequent(phrase[10:20])
  84.     a=g=t=""
  85.     for i in range(5):
  86.         a+=str((int(m_id[i])-int(date[i]))%10)
  87.     a=chain_add(a,10)
  88.     for i in range(10):
  89.         g+=str((int(a[i])+int(s1[i]))%10)
  90.     for i in range(10):
  91.         t+=str(s2[int(g[i])])
  92.     u=chain_add(t,60)[10:]
  93.     p=agent+int(u[-2])
  94.     q=agent+int(u[-1])
  95.     seqT=sequent(t)
  96.     v=transpose(u,seqT)
  97.     k1=sequent(v[:p])
  98.     k2=sequent(v[p:p+q])
  99.     c=''.join(str(i)for i in sequent(u[40:]))
  100.     x=checkerboard(message,c,keyword,null)
  101.     y=transpose(x,k1)
  102.     z=transpose(y,k2,1)
  103.     e=[z[5*i:5*-~i]for i in range(-(-len(z)//5))]
  104.     return' '.join(e[:1-int(date[-1])]+[m_id]+e[1-int(date[-1]):])
  105.  
  106. print(vic_cipher("HINGELSE.MOVETOSAFEHOUSEFOXTROT#3#..WEAREDISCOVERED.TAKEWHATYOUCAN.BURNEVERYT",\
  107. "SENATORI","THEFIRSTPRINCIPLEIST","3172016",9,"47921","4561"))
Success #stdin #stdout 0.02s 9984KB
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71431 14842 71192 58619 04185 22614 14745 49924 32826 13348 02189 38641 70140 40252 44820 64522 43982 47921 71283 22694 94443 80642 14521
https://ideone.com/8qRtw7
language:
Python 3 (python  3.9.5)
created:
7 years ago
visibility:
secret

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