3DES Encryption algorithm implementation in Java

[kochniev]

• The application takes arguments from command line, the first argument is an encryption key, the second is text to be encrypted
• If encryption key and encryption text weren't passed from the command line, the application will try reading them from environment variables ENCRYPTION_KEY TEXT_TO_ENCRYPT
• The application uses a 24 bit encryption key and 8 bit initialization vector
• Encryption key and initialization vector use SHA1PRNG for key generation
• DESede/CBC/PKCS5Padding is used as transformation
• Null values are not encrypted, if null used as an input for the encrypt method, the method will immediately return the null reference. The same applies to the decrypt method