摘要
Abstract
Modern cipher technology plays an important role in information security .SM4 algorithm has high operational speed ,but low safety and complex key management .SM2 algorithm has high security and simple key management ,but slow chunk data encryption speed and low efficiency .This paper puts forward hybrid encryption algorithm based on SM 4 and SM2 algorithms ,a large number of subject proclaimed data encrypted by the extremely fast speed SM 4 algorithm ,the key of SM4 algorithm after encrypted by the SM2 algorithm together with cryptograph transmit to avoid SM 4 complex key management ,therefore ,improves the data security .The theoretical analysis and experimental results on tongfang THD86 chip show that the algorithm is feasible and the encryption and decryption speed is quick and has high safety ,and has a good effect on the electronic commercial affairs and electronic government .关键词
SM4/SM2/混合密码算法Key words
SM4/SM2/Hybrid Cipher Algorithm分类
信息技术与安全科学
