OpenSSL provides several tools that allow you to RSA encrypt/sign arbitrary data files. Of course, directly RSA encrypting large volumes of data is impractical because the encrypted/signed data cannot exceed the size of the key material. This is one of the reasons why SSL connections typically handshake and then pass an AES (or RC4, et [...]

If you have ever wanted to encrypt a blob of data for transmission or archival, OpenSSL provides a simple way to accomplish this task without resorting to platform specific tools. To encrypt1: openssl enc -e -aes-256-cbc -in filename -out filename.enc To decrypt: openssl enc -d -aes-256-cbc -in filename.enc -out filename.dec The example above uses AES256 [...]