Cryptographic equipment

The invention relates to cryptographic equipment. The cryptographic equipment comprises an interface device, an SM4 encryption device and a key generation device, the interface device is used for receiving streaming data sent by equipment needing to be encrypted, converting the streaming data into parallel data and sending the parallel data to the SM4 encryption device; the key generation device is used for receiving the key seed and calculating to generate a key; the SM4 encryption device is used for encrypting the parallel data by adopting a secret key to form an encrypted ciphertext, and sending the encrypted ciphertext to the interface device; wherein the encrypted ciphertext is used for encrypting equipment needing to be encrypted. The cryptographic module can encrypt equipment needing to be decrypted through an SM4 encryption method, the SM4 cryptographic algorithm is a block algorithm, and the algorithm is simple in design, safe and efficient; and the operation process is simple. 本申请涉及一种密码设备，包括接口装置、SM4