smrtprm

RSA message signer, implemented in Java using Maven as the build tool.

To sign a message from the command line, use the rsa_signer.sh script:

./rsa_signer.sh "message to sign"

Implementation notes:

• In order to promote immutability, all methods are static, making classes stateless (except for the static constants in RsaSignerApp).
• The private key file is written with 600 permissions (i.e., -rw-------).
• Max message length can be configured using the max_message_len property.
• Key size can be configured using the key_size property.

Build:

• mvn clean install

CI:

• CircleCI