DES密码体制的安全性应该不依赖于算法的保密，其安全性仅以加密密钥的保密为基础...

一个简单实现RC5加密算法的例子！仅供参考！-Realize a simple example of RC5 encryption algorithm! For reference purposes only!

PGP Software Development Kit Cryptographic Module  Operational Test Notes WHAT IS IT? ---------- The optest program is used as part of the FIPS 140-2 validation process. In particular, section  TE03.14.02  which requires that the tester shall perform each of the specified services and observe that that they have been implemented  properly.   As a side benefit to clients of the  SDK this code can also be used a good example of how to perform a number of commonly used functions, whether or not the developer intends to run in FIPS mode.   Depending on what option is chosen from the command line the following tests will be run: FIPS MODE SPECIFIC TESTS ------------------ - Invoke the Approved mode of operation (optest.c)     This involves Initializing the SDK, checking

首先，RC4算法生成一个“状态”，这开始为包含在订单值0-255的数组。然后该算法通过阵列迭代和周围交换的元素，基于所述键值。原始密钥然后可被丢弃，因为RC4只使用状态来创建一个伪随机密钥流，由算法选择的元素和吐出出来。密钥流的所述状态单靠额外的好处是，原来的密钥并不需要被保存在内存中。算法初始化状态。执行密钥调度算法（KSA）上的状态下，根据所输入的键（然后其可以被丢弃）。在算法选择（现炒）的状态，并将其输出作为密钥流元素。

最常见的流密码RC4的visual c++实现。希望对大家有帮助。-RC4 cipher

ieee一种基于混沌的新加密方法An Image Encryption Scheme Based on Chaotic Map - In this paper, a novel block digital image encryp- tion scheme based on a chaotic coupled map lattices (CML) is reported. Within this scheme, an original image is decomposed into sub-blocks with a given size, and an external secret key with 192-bit is used and mapped to the system parameters, which are employed to generate a spatiotemporal chaotic binary sequence matrix to encrypt the block original image. Besides, the former sub-block encrypted result will be acted as a feedback to the following sub-block encryption proc- ess. The proposed scheme is described in detail, along with the security analyses such as key space analysis, sensitivity analysis, information entropy analysis and correlation coefficients analysis of adjacent pixels. The computer simulation results indicate that the suggested image encryption scheme has some properties desir- able in a good security

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--- -----属于加密算法里的一种，可以看西------------ Belong in an encryption algorithm, you can see the West------

这是密码学的一个常用算法rc1628，对于学习密码学很有帮助啊。-This is a cryptographic algorithm used rc1628, learning cryptography helpful ah.

MD5算法的verilog实现，同时包含有testbench。-Verilog of MD5 algorithm is realized, includes testbench at the same time .

DES Crypt adapted from unix crypt for delphi.