java-keyring

Introduction

This encryption program was developed as part of a class project at my school. The original goal was to create an encrypted messaging program, but it ended up becoming a Java program for symmetric and asymmetric encryption. The program follows the principles of UNIX, meaning it is modular and minimalist in its command-line interface.

Requirements

To use this program, you need to have Java installed on your computer. Basic knowledge of programming and encryption is recommended.

Instructions

1. Download and extract the program files to a folder.
2. Open the command prompt in the folder where the files were extracted.
3. Run the program by typing java -jar Encrypter.jar in the command prompt and pressing Enter.

Using the Program

The program has several options for creating keys, encrypting, decrypting, and signing messages.

"create" Option (create key)

To create a key, use the "create" option with the following parameters:

• --type: Type of key. "S" for symmetric key or "A" for asymmetric key.
• --length: Key length.
• --algorithm: Encryption algorithm used.

Example usage: java -jar Encrypter.jar create --type S --length 256 --algorithm AES

The generated keys will be saved in the "keys" folder.

"encrypt" Option (encrypt message)

To encrypt a message, use the "encrypt" option with the following parameters:

• --private: Name of the file containing the private key (for asymmetric encryption).
• --input: Name of the file containing the message to encrypt.

Example usage: java -jar Encrypter.jar encrypt --private keys/key.RSA.prv --input input/message.txt

The encrypted message will be saved in the "input" folder with the extension ".enc".

"decrypt" Option (decrypt message)

To decrypt a message, use the "decrypt" option with the following parameters:

• --public: Name of the file containing the public key (for asymmetric encryption).
• --input: Name of the file containing the encrypted message.

Example usage: java -jar Encrypter.jar decrypt --public keys/key.RSA.pub --input input/message.enc

The decrypted message will be saved in the "input" folder with the extension ".dec".

"sign" Option (sign message)

To sign a message, use the "sign" option with the following parameter:

• --input: Name of the file containing the message to sign.

Example usage: java -jar Encrypter.jar sign --input input/message.txt

The signature will be saved in the "hash" folder with the extension ".hash".

"view" Option (view key)

To view a key, use the "view" option with the following parameter:

• --input: Name of the file containing the key.

Example usage: java -jar Encrypter.jar view --input keys/key.RSA.pub