Plain Java Encryption/Decryption

This library/CLI can encrypt and decrypt strings while providing confidentiality and integrity of the plaintext. It shall be secure under a chosen plaintext attack.

This is achived by using 128bit AES encryption in the GCM blockmode while only relying on the Java Crypto API (JCE).

The core of the entire implementation is in ch.n1b.tcrypt.cryptor.AesGcmCryptor.

Build Instructions

1. get maven
2. run mvn package

You may use the packed binary from target/tcrypt-*.tar.gz or target/tcrypt-*.zip.

CLI Usage

1. build the binary (see build instructions)
2. run java -jar tcrypt*.jar to print usage (or ./tcrypt.sh)

Encryption

java -jar tcrypt*.jar enc <property key> <plaintext filename>

The ciphertext will be printed to stdout.

Decryption

java -jar tcrypt*.jar dec <property key> <ciphertext filename>

The plaintext will be printed to stdout.