Python package to encode and decode strings using ciphers.

$ pip install encdecpy

The package provides the following ciphers to encode and decode strings -

1. Affine Cipher
2. Atbash Cipher
3. Autokey Cipher
4. Baconian Cipher
5. Base64 Cipher
6. Beaufort Cipher
7. Caesar Cipher
8. Columnar Transposition Cipher
9. Polybius Square Cipher
10. Rail Fence Cipher
11. ROT13 Cipher
12. Running Key Cipher
13. Simple Substitution Cipher
14. Vignere Cipher

from encdecpy import affine

• affine.encode(string, a, b) - Returns the encoded string.
• affine.decode(string, a, b) - Returns the decoded string.

a and b are integers between 0 and 25. a should be relatively prime to 26 and lie between 0 to 25 (both inclusive).

from encdecpy import atbash

• atbash.encode(string) - Returns the encoded string.
• atbash.decode(string) - Returns the decoded string.

from encdecpy import autokey

• autokey.encode(string, key) - Returns the encoded string.
• autokey.decode(string, key) - Returns the decoded string.

key is a string.

from encdecpy import baconian

• baconian.encode(string) - Returns the encoded string.
• baconian.decode(string) - Returns the decoded string.

from encdecpy import base64

• base64.encode(string) - Returns the encoded string.
• base64.decode(string) - Returns the decoded string.

from encdecpy import beaufort

• beaufort.encode(string, key) - Returns the encoded string.
• beaufort.decode(string, key) - Returns the decoded string.

key is a string.

from encdecpy import caesar

• caesar.encode(string, key) - Returns the encoded string.
• caesar.decode(string, key) - Returns the decoded string.

key is a whole number.

from encdecpy import columnartransposition

• columnartransposition.encode(string, key) - Returns the encoded string.
• columnartransposition.decode(string, key) - Returns the decoded string.

key is a string and should contain unique characters between A-Z.

from encdecpy import polybiussquare

• polybiussquare.encode(string, key) - Returns the encoded string.
• polybiussquare.decode(string, key) - Returns the decoded string.

key is a string and should contain unique characters between a-z with one alphabet missing. Length of key should be 25. An example key - phqgiumeaylnofdxkrcvstzwb.

from encdecpy import railfence

• railfence.encode(string, key) - Returns the encoded string.
• railfence.decode(string, key) - Returns the decoded string.

key is a positive number denoting the number of rails.

from encdecpy import rot13

• rot13.encode(string) - Returns the encoded string.
• rot13.decode(string) - Returns the decoded string.

from encdecpy import runningkey

• runningkey.encode(string, key) - Returns the encoded string.
• runningkey.decode(string, key) - Returns the decoded string.

key is a large string, usually a paragraph taken from a book.

from encdecpy import simplesubstitution

• simplesubstitution.encode(string, key) - Returns the encoded string.
• simplesubstitution.decode(string, key) - Returns the decoded string.
• simplesubstitution.generate_random_key() - Returns a randomly generated key.

key is a string containing a permutation of the alphabets (a-z), with no other characters. String should contain only unique characters.

from encdecpy import vignere

• vignere.encode(string, key) - Returns the encoded string.
• vignere.decode(string, key) - Returns the decoded string.

key is a string, usually a single word.