dsa加密算法，其中包含原理与源代码，可以学习下经典加密算法，脱壳时可能有用！-dsa encryption algorithm, which includes the principle and source code, you can study under the classical encryption algorithm may be useful when the shell!

通通过DSA算法的C编程说明加密算法的运用-Pass through the DSA algorithm in C programming note the use of encryption algorithms