DES( Data Encryption Standard)算法，于1977年得到美国政府的正式许可，是一种用56位密钥来加密64位数据的方法。DES算法以被应...

用C语言求解经典逻辑推理题-Solving with C language that classical logic

算术运算实现字母的替换。凯撒加密就是一种单字母替换法：通过用户给出密钥将字母加上密码变成密文-Arithmetic operations to achieve the replacement of letters. Caesar encryption is the replacement of a single-letter law: the user is given the letter key will be encrypted into a ciphertext

用java编写的素数生成程序，运行速度快，最大可以分析１０位的十进制数-used in the preparation of several generating program, run faster, the greatest can be analyzed 10 metric few

多数程序设计语言处理整数的能力是有限的，如C语言中，int类型数据范围是-32767----32767。实际问题的处理过程中往往涉及大整数的运算，如RSA加密算法要求至少64bit的整数，本程序是设计算法实现大整数的加减运算。-majority programming language processing is integral to the limited capacity, such as C language, int data type is the scope-32767---- 32767. Practical problems of the treatment process often involves large integer arithmetic, such as the RSA encryption algorithm requires at least 64-bit integers, the procedure is designed algorithm large integer addition and subtraction operations.

扩展ASE算法delphi-expended ASE algorithm for Delphi

SHA-1Hash函数源码，可以对任何文件做Hash，得到的Hash值为160位。具有抗强碰撞，弱碰撞等能力。虽然王小云已经找到了个别碰撞。但在新的好的hash函数出来之前仍将被广泛使用。-SHA-1Hash function source, any document can be done right hash, the hash value of 160. Anti-collision, the weak capabilities of the collision. Although Bruce Schneier, had found individual collisions. But the new good hash function will be out before widespread use.

DES完全自己实现！能对输入字符串或者选定实现CBC，CFB-1,-8,-64等模式。算法自带有效率检测函数，运行结束显示系统效率。此源代码完全胜任课程设计，就算是毕业设计也只需进行一点改进。欢迎大家下载!-DES to achieve fully their own! Able to enter the selected string or the realization of CBC, CFB-1,-8,-64, such as model. Efficient detection algorithm own function, run the end of display system efficiency. This source code fully qualified for curriculum design, even if it is also just graduated from design to improve a little. Welcome you to download!

Serpent加密算法源代码-Serpent encryption algorithm source code

DES加密算法的实现和演示，具体算法见网上，程序中有注释-DES encryption algorithm and demonstrate the achievement of the specific algorithm see online, proceedings have Notes

基于JAVA语言的MD5编程，可以进行实验讲解，有输入输出示范-based on MD5 Java programming language, can conduct experiments to explain, input-output model