Welcome to pythoncrypt’s documentation!¶
Indices and tables¶
Caesar cipher¶
Module for Caesar cipher algorithms
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caesar.brute_force_decryption(message: str, initial_shift: int = 1, final_shift: int = 25, key: str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')¶ This function returns all shifts decryption between 1 and 25.
- Parameters
message – message to be decrypted
initial_shift – Initial attempt shift
final_shift – Final attempt shift
key – key used for decryption
- Returns
list of decrypted messages
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caesar.decrypt(message: str, shift: int = 3, key: str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ') → str¶ This function decodes encrypted message in caesar’s shift way.
- Parameters
message – str. Message to be decrypted
shift – int. Shift to be used
key – str. Key used for decryption
- Returns
message decrypted: str
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caesar.encrypt(message: str, shift: int = 3, key: str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ') → str¶ This function requires a string that will be encrypted in caesar’s shift way.
- Parameters
message – str. Message to be encrypted
shift – int. Shift to be used
key – str. Key for encryption
- Returns
message encrypted: str
Rail fence cipher¶
Module for rail fence cipher. In the rail fence cipher, the plain text is written downwards and diagonally on successive “rails” of an imaginary fence, then moving up when the bottom rail is reached. When the top rail is reached, the message is written downwards again until the whole plaintext is written out. The message is then read off in rows.
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rail_fence.brute_force(message)¶ This function uses brute force rail fence to break decryption. It starts from 2 rows and keep rise until reach the length of the message.
- Parameters
message – message to be decrypted
- Returns
list of possibles messages decrypted
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rail_fence.decrypt(message: str, rail: int) → str¶ This function decodes encrypted message in rail fence way.
- Parameters
message – message to be decoded
rail – number of rails used to encrypt message
- Returns
message decrypted
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rail_fence.encrypt(message: str, rails: int = 2, no_spaces: bool = True, uppercase: bool = True) → str¶ Function to encrypt with rail fence cipher.
- Parameters
message – message to be encrypted
rails – number of rails to be used
no_spaces – remove whitespaces to difficult decryption
uppercase – transform to uppercase to difficult decryption
- Returns
encrypted message
Trevanion cipher¶
This null cipher uses every nth letter after a punctuation mark to encode message
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trevanion.decrypt(message: str, shift: int = 3) → str¶ Decryption requires to know of the shift N used. To find the plain text it is necessary to browse the text in search of the signs of punctuation. After each one, count a number of characters (N) to find a new letter of the plaintext.
- Parameters
message – message to be decrypted
shift – letter count after punctuation mark
- Returns
message decrypted
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trevanion.encrypt(message: str, shift: int = 3) → str¶ Encryption involves taking a text and be pay attention to position of the punctuation so that after each sign, after counting a number of letters (eg 3 letters) a letter from the hidden message is found.
- Parameters
message – message to be encrypted
shift – letter count after punctuation mark
- Returns
message decrypted