Simple symmetric encryption and decryption (ECB) for text
Project description
SH Crypt
A simple symetric encyption decryption algorithm
About
SH Crypt is base on library cryptography algorithm and use more specifically the Electronic Code Book (ECB) for symetric encryption and decryption.
Here are some code example to use the library.
Generate a key, encrypt and decrypt text
from sh_crypt import GenKeySH, SymCryptSH, AsymCryptSH
import random as rnd
###############################
## Symetric Cipher
# Create key generator
seed = rnd.randint(1, 1e12)
key_gen = GenKeySH(seed)
key = key_gen.gen_sym_key(path_store="mykey.txt")
# Ex : 'e169344ae15719669ed2fecea1ac4773'
password = "Hello World !!"
crypt = CryptSH(key)
encrypt_password = crypt.encrypt_message(password)
# Ex : '469feb93adc2af609a98e6b7cee859bb'
crypt.decrypt_message(encrypt_password)
# 'Hello World !!'
###############################
## Asymetric Cipher
key_gen = GenKeySH()
priv_key, public_key = key_gen.gen_asym_key()
# We can store the key with parameters path_store="file_path".
crypt = AsymCryptSH()
crypt.add_key(priv_key)
crypt.add_key(public_key)
message = "Hello World !!!"
# Encrypt / Decrypt Message
message_enc = crypt.encrypt_message(message)
crypt.decrypt_message(message_enc)
# Sign message / check signature
signature = crypt.sign_message(message)
if crypt.check_sign_message(signature, message):
print("Signature is valid")
else:
print("Signature is invalid")
As you can see in the example, you can store your generated key in a text file and reuse it later, with the path_store
argument.
Install
You can install sh-crypt with pip:
pip install sh-crypt
or download the sh-crypt source, choose your version, and install with the command:
python setup.py install
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