摘要
本文在分析数字静态图象和一般信道特点基础上,提出了用伪噪声及周期换位密码技术对数字静态图象加、解密的方法,同时为确保对图象加密的密钥安全、可靠地传输到接收端,用公开钥RSA对密钥加密保密传输,用CRC-CCITT循环冗余检测码对密钥校验编码。实验表明,对图象加、解密的效果符合理论分析;公开钥RSA和CRC-CCITT的实现能较好地确保信息在一般信道上安全可靠地传输。
Based on the analysis of characteristics of digital still image and general communication channels,an encryption and decryption scheme for digital still image transmition is presented here by means of peseudo-noise and period substitution technique. Furthermore, to ensure the safety and reliability of the image-key transfer,public-key RSA is used for its encipher- ing and CRC-CCITT for the encoding. Experiments show that the result of enciphered and deciphered image is in good argument to the theoretical analysis and the safety and reliability of the information transfer can be ensured by employing public-key RSA cryptosystem and CRC-CCITT.
出处
《桂林电子工业学院学报》
1991年第2期18-24,共7页
Journal of Guilin Institute of Electronic Technology
