ensingerphilipp / RSAoverAES

Securly Encrypt Files with RSA over AES Encryption

DO NOT USE A RANDOM GITHUB REPO FOR CRYPTOGRAPHY - this was made only for my own education and is probably not secure!

RSAoverAES 1.0.2

RSAoverAES is a tool ot help you securly store data by encrypting Files with AES-128 GCM NoPadding and saving the AES-Key in a encrypted File using RSA/OAEP/SHA512withMGF1 Encryption

CommandLine Arguments:

-encrypt Set Mode to Generate RSA encrypted AES File (and encrypt File)
-fileToEncrypt Specify a File to be Encrypted via AES-128/GCM/NoPadding
-pubKey Specify a RSA-Public Key to encrypt the AES KeyFile with (mandatory with -encrypt)

-decrypt Set Mode to decrypt the AESKey File using RSA Private Key (and decrypt File)
-fileToDecrypt Specify a File to be decrypted from AES-128/GCM/NoPadding encryption
-aesKey Specify the RSA/OAEP/SHA512withMGF1 Encrypted AES-Key File to decrypt (mandatory with -decrypt)
-privKey Specify the RSA Private key for decrypting the AES-Key File (mandatory with -decrypt)

Generating RSA Keys for use with RSAoverAES:

Preferably generate the RSA Keys using openssl - make sure the RSA-PrivateKey is stored in PKCS-8 format!
Use these Commands to create the RSA Private-PKCS8 + PublicKey in openssl:

* openssl genrsa -out privatekey.pem 4096  
* openssl rsa -in privatekey.pem -out publickey.pem -pubout  
* openssl pkcs8 -in privatekey.pem -topk8 -nocrypt -out privatekey-pkcs8.pem