基于可重构四值逻辑运算器构建数字文件的配置加密技术

Using reconfigurable quaternary logic operators for constructing a configurable encryption technology for digitalfile encryption

2018年问世的可重构四值逻辑运算器通配电路为配置加密技术提供了核心器件,大约在千分之1.6 mm2的微芯片上就能构造出一个32位配置加密器件的加密器、解密器和密钥派生器,在250 MB的只读存储器中就能预置1013个广义密钥源数据,每个源数据配置出一个加密系统,因此加密系统数量很多,百年内不会重复使用.预存于配置加密器件内的广义密钥源数据结合预约码技术实现了广义密钥自动更换,免除了记忆密钥的烦恼.由于每个广义密钥只使用一次,故配置加密技术的安全性很高;加密和解密过程都使用硬件,故配置加密的工作速度很快;核心微电路体积很小,存储器也只有数百兆字节,故配置加密器件可以制作成如U盘般小巧.实验测试结果表明,配置加密技术能对常见的多种数字文件实施分组加密,理论推测其密文能抵御常见的各种攻击.因此,配置加密技术具有较好的应用前景.

The universal circuit of reconfigurable quaternary-logic operators proposed in 2018 provides a core device for configurable encryption technology.A 32-bit configurable encryption device comprising an encryptor,decryptor,and a key derivation operator can be constructed on an area of approximately 1.6 thousandths of a square millimeter on a microchip.Within a 250 MB read-only memory,the source data for 1013 generalized keys can be preset,and each generalized key’s source data can configure the encryption device into a unique encryption system.These configured encryption systems can be sufficient for hundreds of years without reuse.The generalized key source data prestored in the configurable encryption device combined with reservation code technology can realize an utomatic change in the generalized key,thus avoiding any issues inherent in the memorization of keys.The security of the configurable encryption technology is high because of the one-time use of each generalized key.Because both the encryption and decryption processes are performed in hardware,the configurable encryption operation achieves a high speed.Furthermore,owing to the small size of the core circuitry and a memory capacity of only a few hundred megabytes,the configurable encryption device can be made as compact as a USBflash drive.Experimental tests demonstrated that the configurable encryption technology can implement block encryption on a variety of common digitalfiles.It is theoretically speculated that the cipher text of this configurable encryption technology can resist various common attacks.Therefore,this technology has good application prospects.