cid f307d783b8d528e164d34c3bb081991a334cb327066895798f55c660a3071bfc · original · open access · via wikipedia
Title: Galois/Counter Mode Authors: Venue: Wikipedia Year: unknown Canonical: wiki:galois-counter-mode URL: https://en.wikipedia.org/wiki/Galois/Counter_Mode Collector: wikipedia OA: true ABSTRACT In cryptography, Galois/Counter Mode (GCM) is a mode of operation for symmetric-key cryptographic block ciphers. The proposal was first published in 2007. The GCM algorithm belongs to the class of authenticated encryption with associated data (AEAD) methods. Given a key , plaintext , and associated data , GCM encrypts to produce ciphertext and an authentication tag . is computed from the ciphertext and the unencrypted associated data. A recipient who knows can use the tag to verify that neither the ciphertext nor the associated data had been modified, and then decrypt the ciphertext to recover the plaintext.