The original image is transformed by the discrete fractional cosine transform with a random row cipher key vector and a random column key vector successively.
利用随机产生的行向量和列向量的各分量作为密钥依次对原始图像相应的行和列进行离散分数余弦变换,仿真结果表明经过该方法加密后的图像具有很好的加密效果。
参考来源 - 基于离散分数余弦变换的图像加密技术·2,447,543篇论文数据,部分数据来源于NoteExpress
Method for transmitting data between split type terminal mainframe and handset includes: split type terminal mainframe generates register cipher key which is sent to handset by bluetooth technology;
所述 分体式终端的主机和子机之间数据传输的方法,包括:分体式终端的主机生成 注册密钥,通过蓝牙技术将所述注册密钥发送至子机;
RC4 is a stream cipher algorithm operating on each byte of data; like the RC2, it supports key lengths of 40 bits, 64 bits, and 128 bits.
RC 4是一个流密码算法,它对数据的每个字节进行操作;和RC 2一样,它支持长度为40位、64位和128位的密钥。
It then passes the extracted Base 64 encoded cipher value, the decryption key, and the algorithm name to a method named decrypt (examined in Cryptography).
接着它将抽取出的用Base 64编码的密码值、解密密钥以及算法名称传递给名为Decrypt的方法(见密码术中的研究)。
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