Cutieguwu/CutieDecryptor
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Revising standards, added fallback for testing, Improved in-script commenting.

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Cutieguwu
2024-04-15 11:42:28 -04:00
parent c1d2299b67
commit fb88599663
1 changed files with 16 additions and 10 deletions
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CutieDecrypt.py
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@@ -11,38 +11,44 @@
# #
# @Script: CutieDecrypt.py # @Script: CutieDecrypt.py
# @Date Created: 10 Apr, 2024 # @Date Created: 10 Apr, 2024
# @Last Modified: 13 Apr, 2024 # @Last Modified: 15 Apr, 2024
# @Last Modified by: Cutieguwu | Olivia Brooks # @Last Modified by: Cutieguwu | Olivia Brooks
# ---------------------------------------------------------- # ----------------------------------------------------------
def decrypt(dataEncoded: str, keyDecrypt: str, keyEnglish: str): def decrypt(dataEncoded: str, keyDecrypt: str, keyLanguage: str="etaoinshrdlcumwfgypbvkjxqz".upper()):
""" """
Decrypts a string encoded using a substitution cypher based on the provided key.\n Decrypts a string encoded using a substitution cypher based on the provided key.\n
Characters closer to index 0 in `key` are more common in the English language. Characters closer to index 0 in `key` are more common in the English language.
Falls back on Lewand's order of English characters, most to least common, if no `keyLanguage` provided.
""" """
dataDecrypted = "" dataDecrypted = ""
for c in dataEncoded: for c in dataEncoded: # Decrypt each character.
is_found = False is_found = False
if c != " ": if c in keyDecrypt: # Attempt to decrypt each character.
while not is_found: while not is_found:
for k in keyDecrypt: for k in keyDecrypt:
if c == k: # Character found in decryption key. if c == k: # Character found in decryption key.
dataDecrypted = dataDecrypted + keyEnglish[keyDecrypt.index(k)] dataDecrypted = dataDecrypted + keyLanguage[keyDecrypt.index(k)]
is_found = True is_found = True
else: else: # Failed to decrypt a character, passing and leaving character as is.
dataDecrypted = dataDecrypted + c dataDecrypted = dataDecrypted + c
return dataDecrypted return dataDecrypted
# Code hereon is for testing purposes only. Please use main.py for general use.
with open("dataEncoded19.ENC", "r") as f: with open("dataEncoded19.ENC", "r") as f:
data = "".join(c for c in f.read() if c != "\n") data = "".join(c for c in f.read() if c != "\n")
with open("key.txt", "r") as f: """
with open("keyEnglish.txt", "r") as f:
key = "".join(c for c in f.read() if c != "\n") key = "".join(c for c in f.read() if c != "\n")
"""
key = "qwertyuiopasdfghjklzxcvbnm" # Temporary - Faux testing key. key = "qwertyuiopasdfghjklzxcvbnm" # Temporary - Faux testing key.
english = "etaoinshrdlcumwfgypbvkjxqz" # Temporary - Lewand's order of english characters; most to least common.
print(decrypt(data, key, english)) print(decrypt(data, key))