At the heart of our optimization is a well-chosen subgroup of the underlying ZN∗ , which is used as the randomness space for masking messages during encryption.The size of the subgroup is significantly smaller than that of ZN∗ , leading to faster encryption and decryption algorithms of ou...
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In this paper, we evaluate the performance of three symmetric key block cipher encryption algorithms: AES, DES and Blowfish. The performance indices here are the security and speed of the algorithm. Experimental results show that Blowfish algorithm runs faster than DES. It is proved that the ...
key(Key, also often calledkey) is used to refer to a completeencryption,decryption,integrity verificationsecret information such as cryptographic applications. key classification Keys in encryption and decryption: The same key is shared in symmetric encryption. In asymmetric encryption, it is dividedpubl...
The AES encryption and decryption algorithms use a key schedule generated from the seed key array of bytes. The AES specification refers to this as the KeyExpansion routine. Generating, in essence, multiple keys from an initial key instead of using a single key greatly increases the diffusion of...
An algorithm will use the encryption key in order to alter the data in a predictable way, so that even though the encrypted data will appear random, it can be turned back into plaintext by using the decryption key. What are some common encryption algorithms? Commonly used symmetric encryption...
像素位置与比特双重置乱的图像混沌加密算法 image encryption algorithms based on chaos through dual scrambling of pixel position and bit 数字全息光学加密算法的研究与实现 Three Tier Encryption Algorithm For Secure File Transfer 量子加密算法分析 Optical image encryption using fractional Fourier transform and cha...
In this section, we introduce the encryption and decryption algorithms based on the FSM and global chaotic pixel diffusion and the chaotic system used for encryption and decryption. Experimental results and security analysis To verify the security and effectiveness of the algorithm, we have performed ...
A new unified image encryption system with identical encryption and decryption algorithms was proposed in this paper. In this system, an external key and the Hénon map are used to generate the equivalent secret keys. Then, a kind of lifting-like transformation is employed to diffuse the image ...
6) encryption and decryption 加密和解密 1. The phase encryption and decryption of optical image in Fourier domain are studied by computer simulation. 计算机模拟研究了光学图像频域相位加密和解密过程 ,用混沌序列构造相位值并采用环形相位分布 ,不仅可以压缩密匙的数据量方便保存和传输 ,而且使加密图像具有...