GPG(GNU Privacy Guard)
1. Description of GPG – what does it do and how, and the components of GPG4win. GPG(GNU Privacy Guard) is PGP cryptographic software suite. Basically it is a hybrid encryption software because it uses both symmetric key encryption and asymmetric key encryption. Symmetric key encryption for the speed purpose and asymmetric key encryption is for security purpose. In Symmetric key Encryption we use only one key for encryption and decryption both. And in Asymmetric key Encryption we use two keys ,one is for encryption and other one is for decryption. GPG is used for encrypting files and mails. It is used for transporting mail securely with the help of encryption and digital signature. Encryption protects the data from the intruders and digital signatures are used to make sure that it is send from a specific sender. GPG4win supports the OpenPGP and S/MIME (X.509). Gpg4win is a free software. Gpg4win is the installer for the windows and contain several...