chunkcrypt 0.0.3

Simple encryption and decryption by chunk

This is a simple script for encrypting and decryption file by chunk using cryptography package, decryption includes download from url. Project repository url is not yet available, mostly because of its inactive development status.

Encrypting files:

from chunkcrypt.cryptchunk import encrypt_file
# encrypt_file(key, file, output_file, chunk_size)

# encrypting without a provided key
encrypt_file(None, '/home/user/myfile.txt', '/home/user/encryfile.txt')
# "myfile.txt" is now encrypted and the encrypted file is located at "/home/user/encrytfile.txt"

# encrypting with a provided key
encrypt_file('CemuWNzkXti7OVAmFV0SIpZAxkF2wybK', '/home/user/myfile.txt', '/home/user/encrytfile.txt')

# specifying a chunksize, default is 1024
encrypt_file(None, '/home/user/myfile.txt', '/home/user/encryfile.txt', 2048)
# the length of bytes of a encrypted chunk is also written on the encrypted file on a 4 element array of bytes format
# this is needed since Fernet returns additional bytes whenever it encrypted data

Decrypting files:

from chunkcrypt.cryptchunk import decrypt_file, downl_decrypt
# decrypt_file(key, encrypted_file, output_file)
# downl_decrypt(url, output_file, key, silent=True,  pre='', suff='', msg_v='')
# decryption can also be done on file encrypted using encrypt_file()

# decrypting a file
decrypt_file('CemuWNzkXti7OVAmFV0SIpZAxkF2wybK', '/home/user/encrytfile.txt', '/home/user/decryptfile.txt')

# decrypting from url, only works on direct download link or hotlink
downl_decrypt('https://sampledownl.com/download/encryptedfile.txt', '/home/user/decryptfile.txt', 'CemuWNzkXti7OVAmFV0SIpZAxkF2wybK')

# decrypting from url, with message
downl_decrypt(
    'https://sampledownl.com/download/encryptedfile.txt', 
    '/home/user/decryptfile.txt', 
    'CemuWNzkXti7OVAmFV0SIpZAxkF2wybK',
    False,
    ' * ',
    ' - Test',
    'MyFile'
)
# Output:
#  * Attempting to Download MyFile - Test
#  * Finished Downloading MyFile - Test
#  * Attempting to Decrypt Downloaded MyFile. Please wait, this might take a while depending on the size of file - Test
#  * Finished decrypting MyFile - Test