jmath.cryptography package¶
Submodules¶
jmath.cryptography.affine module¶
Affine cipher and Affine cipher relevant tools.
- class jmath.cryptography.affine.Affine(a, b, char_set='abcdefghijklmnopqrstuvwxyz')¶
Bases:
objectCreates an affine cipher
(ax + b) % len(set_length)
- Parameters
a (int) – Value to multiply x by
b (int) – Value to add to x
char_set (Tuple[str]) – Ordered set (tuple) of valid characters
- Raises
OutOfRange – Given if a or b are outside of the range from 0 to the length of the character set minus one.
- property a¶
Value that x is multiplied by in the encryption process.
- property b¶
Value that x is added to in the encryption process.
- property char_set¶
Ordered set of unique characters to used in the cipher.
- decrypt(string, split_char='')¶
Decrypts a string of numbers as per the affine cipher
- Parameters
string (str) – The string to be decrypted by the affine cipher, expects splits by spaces.
split_char (str) – The character between encrypted values.
- Return type
str
- encrypt(string, split_char='')¶
Encrypts a string of letters as per the affine cipher.
- Parameters
string (str) – The string to be encrypted by the affine cipher
split_char (str) – The value to insert between encrypted values.
- Return type
str
jmath.cryptography.tools module¶
Tools for analysing cipher text
- jmath.cryptography.tools.character_frequencies(cipher_text, split_char='')¶
Records the most commonly occuring frequencies in the cipher text.
- Parameters
cipher_text (str) – The text to analyse
split_char (str) – The character to split items around, defaults to none.
- Return type
Dict[str, int]