Pure Kotlin implementation of block ciphers

Kotlin program based on cryptography algorithms for encryption and decryption information using AES and DES.

Requirements

• JAVA 8+
• GRADLE

Build project

➜  crypto-symmetric: gradle build
➜  ...
➜  crypto-symmetric: gradle jar

Usage

usage: java -jar crypto-symmetric.jar [-b] -e|-d -c CIPHER -s FILE [-r FILE] -k KEY

optional arguments:
  -b         : specify binary output
  -d         : decrypt message
  -e         : encrypt message
  -k KEY     : secret key
  -s FILE    : source file
  -r FILE    : result file
  -c CIPHER  : AES or DES

Examples

DES

• Encryption

  ➜  java -jar crypto-symmetric.jar -e -c DES -s src.txt -r res.txt -k "SuperKey"
  

• Decryption

  ➜  java -jar crypto-symmetric.jar -d -c DES -s res.txt -r tmp.txt -k "SuperKey"
  

AES

• Encryption

  ➜  java -jar crypto-symmetric.jar -e -c AES -s src.txt -r res.txt -k "SuperSecretKey10"
  

• Decryption

  ➜  java -jar crypto-symmetric.jar -d -c AES -s res.txt -r tmp.txt -k "SuperSecretKey10"
  

TODO

• Translate all comments in the code into English

License & copyright

Licensed under the MIT-License.