/crypto_application

Primary LanguagePython

CRYPTO APPLICATION

git: https://github.com/LuanNgoMinh/crypto_Application

ENCRYPT - DECRYPT

Suppported Mode

  • ECB
  • CBC
  • CFB
  • OFB
  • CTR

Content

Encrypt file with AES Mode and IV

Command

python encrypt.py -m <AES_Mode> -i <Initialization_Vector> <plan_text_file> <cipher_text_file>

Example

python encrypt.py -m CFB -i "meo con xinh xan" HenMotMai.text HenMotMai.cipher

Decrypt file

Decrypt file with AES Mode

Command

python decrypt.py -m <AES_Mode> <cipher_text_file> <plain_text_file>

Example

python decrypt.py -m CFB HenMotMai.cipher HenMotMai.data

Testing

Auto encrypt and decrypt file. After that, compare sha256 checksum origin file and decrypt_file
Encrypt and decrypt file storage at test_space dir in same folder with test file

Command

sudo chmod +x test
./test <file_1> <file_2> <file_3> ...

Example:

./test sunflower.jpg HenMotMai.text testcase1

Output

... some log ...
=> CFB true: origin_file_name
... some log ...
=> CTR true: origin_file_name
... some log ...
=> OFB false: origin_file_name

CHECKSUM

Generate checksum from a file. Verify file from check sum

Hash mode support

  • SHA
  • SHA256
  • MD5

Generate checksum

Command

./checksum.py -h <hash mode> <filename>

Example

./checksum.py -h SHA256 sunflower.jpg

Compare file with checksum

Command

./checksum.py -h <hash mode> -c <checksum> <filename>

Example

    ./checksum.py -h SHA256 -c 08ad5b6cf4f282bc3044ea437c239ebae398daa17dd366141ba6c883bccabd7b sunflower.jpg

DIGITAL SIGNATURE

Sign a file

Command

./sign.py -h <hash_mode> <file_need_signing> <signature_file>

Example

./sign.py -h MD5 HenMotMai.text HenMotMai.signature

Verify signature

Command

./sign.py -h <hash_mode> <receive_file> <signature_file>

Example

./verify_sign.py -h SHA256 HenMotMai.text HenMotMai.signature