Fix the typo "frequences" to frequencies.

dev 0.6.0
KKlochko 2 years ago
parent 4d7e9da1d1
commit 476a24c900

@ -21,16 +21,16 @@
(defn chi-squared-statistic
"To calculate the frequency distribution of a language. More detail about the algorithm here: http://practicalcryptography.com/cryptanalysis/text-characterisation/chi-squared-statistic/"
[text letter-frequences]
[text letter-frequencies]
(let [length-text (count text)
letter-counts (count-characters (cs/lower-case text))]
;letter-counts
(reduce
(fn [acc [char count]]
(+ acc
(if (contains? letter-frequences char)
(if (contains? letter-frequencies char)
(chi-squared-letter-statistic count
(get letter-frequences char)
(get letter-frequencies char)
length-text)
0)))
0

@ -17,9 +17,9 @@
(defn get-all-scores
"For pairs (key, plaintext) finds scores and return list of pairs [key, score]."
[letter-frequences pairs]
[letter-frequencies pairs]
(map (fn [[key text]]
[key (ca/chi-squared-statistic text letter-frequences)])
[key (ca/chi-squared-statistic text letter-frequencies)])
pairs))
(defn get-min-score-pair
@ -34,18 +34,18 @@
(defn get-key
"To find the key with frequencies of letters."
[ciphertext symbols letter-frequences]
[ciphertext symbols letter-frequencies]
(->> (get-all-texts ciphertext symbols)
(get-all-scores letter-frequences)
(get-all-scores letter-frequencies)
(get-min-score-pair)
(first)))
(defn get-plaintext
"Return the plaintext from a ciphertext. The function is case-insensitive."
[ciphertext symbols letter-frequences]
[ciphertext symbols letter-frequencies]
(let [ciphertext (cs/lower-case ciphertext)]
(caesar/decrypt-message ciphertext
(get-key ciphertext symbols letter-frequences)
(get-key ciphertext symbols letter-frequencies)
symbols)))
(defn frequency-analizer-get-plaintext

@ -4,7 +4,7 @@
[cipher-analytical-machine.ciphers.caesar :as caesar]
[cipher-analytical-machine.analyzers.caesar :as caesar-analyzers]
[cipher-analytical-machine.symbols.factories :as sf]
[cipher-analytical-machine.symbols.frequences :as symbol-frequences]
[cipher-analytical-machine.symbols.frequencies :as symbol-frequencies]
[clojure.string :as cs]
[clojure.tools.cli :refer [parse-opts]])
(:gen-class))
@ -155,7 +155,7 @@
[options arguments action-type]
(let [message (:message options)
symbols (:symbols options)
frequencies symbol-frequences/english-letter-frequences]
frequencies symbol-frequencies/english-letter-frequencies]
(cond
(= action-type :cracking)
(caesar-analyzers/get-plaintext message symbols frequencies)

@ -1,4 +1,4 @@
(ns cipher-analytical-machine.symbols.frequences
(ns cipher-analytical-machine.symbols.frequencies
(:gen-class))
(def english-letter-frequences {

@ -2,7 +2,7 @@
(:require
[clojure.test :refer :all]
[cipher-analytical-machine.analyzers.caesar :refer :all]
[cipher-analytical-machine.symbols.frequences :as sf]
[cipher-analytical-machine.symbols.frequencies :as sf]
[cipher-analytical-machine.analyzers.analyzers :as ca]
[clojure.string :as cs]))
@ -25,9 +25,9 @@
(testing "There're 27 combinations for a 'Hello World'."
(let [ciphertext "khoorczruog"
symbols "abcdefghijklmnopqrstuvwxyz "
frequences sf/english-letter-frequences
frequencies sf/english-letter-frequencies
text-pairs (get-all-texts ciphertext symbols)]
(is (= 27 (count (get-all-scores frequences text-pairs)))))))
(is (= 27 (count (get-all-scores frequencies text-pairs)))))))
(deftest get-min-score-pair-test
(testing "If a key is one, then the min score pair is 15."
@ -40,47 +40,47 @@
ciphertext "khoorczruog"
key 3
symbols "abcdefghijklmnopqrstuvwxyz "
frequences sf/english-letter-frequences]
frequencies sf/english-letter-frequencies]
(testing "The plaintext is encrypted with 3 as the key."
(is (= key (get-key ciphertext symbols frequences)))))
(is (= key (get-key ciphertext symbols frequencies)))))
(let [; З поеми "Кавказ" Тараса Григоровича Шевченка:
plaintext "Борітеся поборете, Вам Бог помагає! За вас правда, за вас слава. І воля святая!"
ciphertext "жхчощйшде–ецхжхчйщй,езєуежхиецхуєиєк!емєезєшецчєзїє,емєезєшештєзє.еоезхтдешздщєд!"
key 7
symbols "абвгґдеєжзиіїйклмнопрстуфхцчшщьюя "
frequences sf/ukrainian-letter-frequences]
frequencies sf/ukrainian-letter-frequencies]
(testing "The plaintext is encrypted with 3 as the key."
(is (= key (get-key ciphertext symbols frequences))))))
(is (= key (get-key ciphertext symbols frequencies))))))
(deftest get-plaintext-test
(let [plaintext "hello world"
ciphertext "khoorczruog"
symbols "abcdefghijklmnopqrstuvwxyz "
frequences sf/english-letter-frequences]
frequencies sf/english-letter-frequencies]
(testing "The plaintext is encrypted with 3 as the key."
(is (= plaintext (get-plaintext ciphertext symbols frequences))))
(is (= plaintext (get-plaintext ciphertext symbols frequencies))))
(testing "The ciphertext is case-insensitive."
(is (= plaintext (get-plaintext "KhoorcZruog" symbols frequences)))))
(is (= plaintext (get-plaintext "KhoorcZruog" symbols frequencies)))))
(let [; З поеми "Кавказ" Тараса Григоровича Шевченка:
plaintext "Борітеся поборете, Вам Бог помагає! За вас правда, за вас слава. І воля святая!"
ciphertext "жхчощйшде–ецхжхчйщй,езєуежхиецхуєиєк!емєезєшецчєзїє,емєезєшештєзє.еоезхтдешздщєд!"
key 7
symbols "абвгґдеєжзиіїйклмнопрстуфхцчшщьюя "
frequences sf/ukrainian-letter-frequences]
frequencies sf/ukrainian-letter-frequencies]
(testing "The ciphertext is case-insensitive."
(is (= (cs/lower-case plaintext)
(get-plaintext ciphertext symbols frequences))))))
(get-plaintext ciphertext symbols frequencies))))))
(deftest frequency-analizer-get-plaintext-test
(let [plaintext "abc"
ciphertext "bca"
key 1
symbols "abc"
frequences sf/english-letter-frequences]
frequencies sf/english-letter-frequencies]
(testing "The ciphertext is 'bca' and key is 1."
(is (= plaintext
(frequency-analizer-get-plaintext ciphertext symbols frequences))))))
(frequency-analizer-get-plaintext ciphertext symbols frequencies))))))

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