From 657a447733382ebd1b3f0f064907f57d470dfebe Mon Sep 17 00:00:00 2001
From: spirkelmann <simon.pirkelmann@gmail.com>
Date: Tue, 28 Jan 2020 18:45:05 +0100
Subject: [PATCH] code for generating tex output for friedman test

---
 code/friedman.py      | 83 +++++++++++++++++++++++++++++++++++++++++++
 code/frost_cipher.txt | 19 ++++++++++
 2 files changed, 102 insertions(+)
 create mode 100644 code/friedman.py
 create mode 100644 code/frost_cipher.txt

diff --git a/code/friedman.py b/code/friedman.py
new file mode 100644
index 0000000..8ce9940
--- /dev/null
+++ b/code/friedman.py
@@ -0,0 +1,83 @@
+f = open('frost_cipher.txt')
+cipher = f.readlines()
+cipher = [c.strip('\n').split(' ') for c in cipher]
+
+clean = ''
+for c in cipher:
+    clean += "".join(c)
+#    print("".join(c))
+ciphertext = clean.upper()
+
+
+colors = ['red', 'blue', 'darkgreen', 'orange', 'black', 'yellow']
+
+width = 110
+blocknum = 4
+blocks = ["" for i in range(0,blocknum)]
+output0 = "\\texttt{"
+output1 = "\\texttt{"
+
+for i in range(len(ciphertext)):
+    output0 += ciphertext[i]
+
+    for j in range(blocknum):
+        if i % blocknum == j:
+            output1 += "\\textcolor{" + colors[j] +  "}{" + ciphertext[i] + "}"
+
+    blocks[i%blocknum] += ciphertext[i]
+
+    if (i+1)%width == 0:
+        output0 += '\n'
+        output1 += '\n'
+
+output0 += "}"
+output1 += "}"
+
+f0 = open('friedman_0.tex', 'w')
+f0.write(output0)
+f0.close()
+
+f1 = open('friedman_{}.tex'.format(blocknum), 'w')
+f1.write(output1)
+f1.close()
+
+def compute_coincidence(text):
+    letter_count = {}
+    letters = [chr(i) for i in range(ord('A'), ord('Z')+1)]
+
+    for c in letters:
+        letter_count[c] = 0
+
+    for c in text:
+        if c in letter_count.keys():
+            letter_count[c] += 1
+
+    N = len(text)
+    s = 0
+    for n_i in letter_count.values():
+        s += n_i * (n_i - 1) 
+    kappa =  float(s) / (N * (N - 1))
+    print("kappa_o = ", kappa)
+    return kappa
+
+
+def output_block(block, color, width=20):
+    output = "\\texttt{\\textcolor{" + color + "}{"
+    for i in range(len(block)):
+        output += block[i]
+        if (i+1)%width == 0:
+            output += '\n'
+
+    output += "}}"
+    
+    kappa = compute_coincidence(blocks[j])
+    output += "\\textcolor{"+color+"}{$$" + "\\kappa_o = {:6.4f}".format(kappa) + "$$}"
+    print(output)
+
+    f = open('friedman_{}_'.format(blocknum) + color + '.tex', 'w')
+    f.write(output)
+    f.close()
+
+for j in range(blocknum):
+    output_block(blocks[j], colors[j])
+
diff --git a/code/frost_cipher.txt b/code/frost_cipher.txt
new file mode 100644
index 0000000..701e7be
--- /dev/null
+++ b/code/frost_cipher.txt
@@ -0,0 +1,19 @@
+Ync jhfug vbavfyxi zb s rjczgp bfcv
+Tsu ggkwp W uhzcr fhy kfsojc pgmm
+Rbv uj fbw mwrjweji zggl Z glhtu
+Ofw qfccxi ucog tes sl krf sl N tcmei
+Kc oajis am gvbl bs kvw nsusjzwfkla
+Yysf mtfy laj fhzxw rg bnxk ok yfzf
+Sgi yonbsx dwkmrdk mmv pwmyvf uefza
+Txhrikx nk ksl liokld rbv pfehww bvoj
+Mmfiya fj tgk yyol mmv dslxzby mmvfw
+Sgi scla yyol ftibagl vemtqcm dtd
+Zb dxfmsk gt jhwi mrr lkturwg gcoud
+Ty W cxuk hzx kzfkm kff sgtkvwk irm
+Qxy bbgpneu zhb noq ejrrk hs kc otd
+Z rgngksv bk Z gzhzcr woji qgfj soud
+N jvseq ss lxqcwfz yywk pnkv s lnxv
+Khrvkzxwv oyxx rbv tlvg zxsts
+Lpt icswx uwnxwxsv bs r kghi rbv B
+N kcgd yys ggj cskl yionxqvr tr
+Fer lafk vsl rrrw tqc hzx iztxxwvbux