Polar Crypto Light Free - Version 2.5 Polar Crypto Light is simple to use, supports the securest, most recommended cryptographic standards and crypto systems. It is an ActiveX control which seamlessly adds encryption features to your Windows applications. It is easy to use, it encrypts strings, buffers and files. It uses public and private RSA keys for encryption/decryption (256-bit symmetric keys for AES) and provides general process information (detecting errors in the encryption/decryption process and reporting the current status of the operation).Polar Crypto Light is appropriate for you whether you are a beginner or a professional in software development. If you need simple but unbreakable encryption, with absolute confidentiality and digital signature creation and validation, Polar Crypto Light is the appropriate tool for you.