The process of decoding data to make it more readable.
Decryption is the decoding process that is the opposite of encryption. It generally consists of the computing process necessary to convert an encrypted code from its complex cipher form to a more readable form. Often, this readable form is in plain text and can then be read by a computer user.
Decryption is a vital process in the technical aspects of the crypto ecosystem. In fact, cryptography is one of the pillars of the ecosystem, and decryption serves the purpose of simplifying the codes and other computing concepts that perform vital tasks and underlie the system.