What is PGP/GPG?

The only hint that is worth popping at the start of this post is that PGP and GPG belong to the same category. You are certainly not the only one intrigued by such terms. But, you are most likely to come across these terms if you are into file security solutions. Let’s explore in this post:
  1. What is PGP?
  2. What is GPG?
  3. How PGP and GPG differ?
What is PGP? PGP can be expanded as Pretty Good Privacy. It is a form of the file encryption standard, and security software provider Symantec is the mastermind behind it. PGP is one of the standard encryption standards that was put to use in 1990. With changing times and the development of newer technologies, this standard has undergone multiple improvements. This encryption standard implements various technologies, comprising:
  1. Hashing
  2. Data compression
Its main utility lies in protecting the master data and enabling seamless flow of a company’s critically important information among the people at its top level of the hierarchy. The PGP proves its efficacy in the encryption of directories, disk partitions, and emails also. Thus, the users can keep the cyber-miscreants at bay by using this encryption. What is GPG? To understand GPG, let’s explore the details about Open PGP. PGP went through a transformative update with the inclusion of an open-source feature in it. By making it open source, the PGP is made freely available to support public environments. The connection between OpenPGP and GPG is that GPG is a different implementation of the OpenPGP standard. GPG is expandable as GNU Privacy Guard. It can be considered a stronger alternative to PGP. It integrates encryption solutions or user interfaces based on Linux operating systems. This replacement for the PGP employs AES or advanced encryption standards. Windows Frontend and the command line can be integrated with GPG to attain robust and impregnable spaces for operations. How PGP and GPG differ? GPG is an up-gradation of PGP. It is more compatible with Open PGP as compared to PGP. There are differences in the algorithm used too. While the PGP employs IDEA encryption, the GPG works on the AES algorithm. IDEA is costlier, but AES is cost-effective. The AES is royalty-free, more secure, and ideal for commercial use, such as in banks and eCommerce sites. In contrast, PGP serves personal use ideally. To summarize, PGP and GPG differ on the following points:
  1. PGP is original, freeware, while GPG is an updated version of PGP.
  2. PGP working is based on RSA and IDEA algorithms, while GPG uses Advanced Encryption Standard.
  3. PGP is available free and can be downloaded from PGP International’s home page for personal use. GPG, useful for email encryption, can serve both personal and commercial purposes.
Looking at all these points, it is safe to say that commercial websites can deliver the best customer experience when supported by GPG encryption. But, if you want to enjoy open-source flexibility or have some personal purposes to fulfill, PGP comes as a reliable and readily available option.