SAR数据预处理，实现影响的分块重采样，提高了处理速度-SAR data preprocessing, to achieve effects of block re-sampling to improve the processing speed

本代码使用C#语言实现了RSA和DES算法，其中通过分段处理的方式解决了RSA对较大数据的加解密。(This code block implements the algorithm of RSA & DES,and we resolved the encryption and decryption of data with large size on RSA by segmental processing.)