Encryption, decryption and expansion method and device, encryption and decryption system, and terminal
An encryption method and encryption algorithm technology, which can be applied to encryption devices with shift registers/memory, transmission systems, digital transmission systems, etc., and can solve the problem that the efficiency of encryption methods needs to be improved.
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[0069] As mentioned earlier, the efficiency of existing encryption methods needs to be improved.
[0070] In the embodiment of the present invention, the round keys required for the multiple rounds of iterative operations of the encryption algorithm are determined, and the round keys are used to perform multiple rounds of the encryption algorithm on the plaintext data to be encrypted. Wherein, the multiple iterations of the encryption algorithm include multiple iterations of a single iteration. When the round key is used to perform multiple iterations of the encryption algorithm on the plaintext data to be encrypted, the encryption algorithm can be completed within one clock cycle. At least two rounds of single iterative operations can reduce the clock cycles occupied by multiple iterative operations of the encryption algorithm and improve the efficiency of the encryption method.
[0071] In order to make the above-mentioned objectives, features and beneficial effects of the presen...
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