面：密

	/* 
	 * Now you have 3 attributes computed by you before: sn_, pk_, sk_
	 *
	 * Step-1
	 * Read each character C in data_ one by one, and encrypt them, then write to
	 * a new file. The output filename should be "letter".
	 * The encryption method is:
	 * C multiply itself sk_ times, then mod sn_
	 *
	 * Step-2
	 * Write pk_ to a file named "key.pub" in string, the format is: pk_[newline]sn_
	 * Write sk_ to a file named "key.prv" in string, the format is: sk_[newline]sn_
	 * NOTE: [newline] means a newline, don't output a string "[newline]" or you'll
	 *       be mocked just like someone before.
	 */

每个字符先X sk_

自乘sk_次，如何再 mod sn_ 取余数

pow();

mod();

 

1(mod3)是什么意思

加密与解密：一个简单的C语言示例  阅读数 2万+

回车、换行、空格的ASCII码值—（附ASCII码表）40w+