encryption_lib for Deno

A library with different methods to encode and decode data.

Caesar Cipher

It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. (https://en.wikipedia.org/wiki/Caesar_cipher)

Caesar.CaesarEncoding(txt,key)

Example:

Caesar.CaesarEncoding(“Hello World!”,5) –> “Mjqqt Btwqi!”

Caesar.CaesarDecoding(txt,key)

Example:

Caesar.CaesarDecoding(“Mjqqt Btwqi!”,5) –> “Hello World!”

RSA

RSA public-key / private-key cryptosystem. On base of two prime numbers (at the moment)…

RSA.KeyGenrerator()

first array is the public key
second array is the private key

Example:

RSA.KeyGenrerator() –> [[3,1219],[763,1219]]

RSA.Encoding(text,public key)

Example:

RSA.Encoding(“Hello World”,[3,1219]) –> [234,246,485,485,1132,1074,243,1132,459,485,420]

RSA.Decoding(list,private key)

Example:

RSA.Decoding([234,246,485,485,1132,1074,243,1132,459,485,420],[763,1219]) –> “Hello World”