| 摘要 |
Disclosed are an encryption method and an encryption device, the encryption method comprising the following steps: generating an advanced encryption standard (AES) initial key via a simplified advanced encryption standard (SAES) encryption algorithm (S101); obtaining an AES encryption key after performing key expansion on the AES initial key (S102); using the AES encryption key to encrypt information to be encrypted via an AES encryption algorithm, and generating encrypted data (S103). The present invention introduces the SAES algorithm to encrypt the AES encryption key, increasing the difficulty of cracking the AES encryption key. An attacker must first crack the AES encryption key in order to crack the AES, and the difficulty of cracking AES encryption data is increased overall. In addition, the SAES encryption algorithm and the AES encryption algorithm are implemented via an ASIC integrated in an encryption chip, and since the ASIC is a customised circuit, no codes or programs which may be intercepted are present, preventing the risk of the SAES or the AES being cracked due to program or code interception, ultimately increasing data security. |
