Example project for Encrypt Decrypt RSA in JAVA Encrypt From JSEncrypt
JSEncrypt : https://github.com/travist/jsencrypt
openssl genrsa -out rsa_2048_priv.pem 2048
openssl rsa -pubout -in rsa_2048_priv.pem -out rsa_2048_pub.pem
openssl pkcs8 -topk8 -inform PEM -in rsa_2048_priv.pem -out private_key.pem -nocrypt