| 摘要 |
An authenticated encryption method and apparatus are described in which plaintext data is encrypted, using a secret key, to form ciphertext data. A message authentication code, MAC, is also formed in dependence on a combination of the ciphertext data and data characteristic of the plaintext data. The ciphertext data and the MAC are then output, for example, for storage to a storage medium. In a preferred embodiment a block cipher operating in GCM mode is adapted to cause the stored message authentication code to be dependent on the plaintext data. |
