AES加密解密算法源代码

				// daes.cpp : 定义控制台应用程序的入口点。
				//
				
				#include "stdafx.h"
				
				
				#include 
				#include "openssl/aes.h"
				
				
				int main()
				{
					unsigned char key[16+1] = "my-key-i-choosed"; // 128bits key (应该是真正的随机数才好)
					char pt1[16+5+1] = "0123456789abcdef12345";   // 明文
					char ct[16+5+1];  // 密文
					char pt2[16+5+1]; // 解密后的明文
				
					AES_KEY k;
					unsigned char iv1[16+1] = {"1023456789abcdef"}; // 16+1，加密用
					unsigned char iv2[16+1] = {"1023456789abcdef"}; // 16+1，解密用
				
					{	// single blcok test
						AES_set_encrypt_key(key, 16*8, &k); 
						AES_encrypt((unsigned char*)pt1, (unsigned char*)ct, &k);
				
						AES_set_decrypt_key(key, 16*8, &k);
						AES_decrypt((unsigned char*)ct, (unsigned char*)pt2, &k);
				
						if (memcmp(pt1, pt2, 16)==0)
							puts("AES block ok");
						else
							puts("AES block err");
					}
				
					{	// cfb mode (stream mode)
						int num=0;
						AES_set_encrypt_key(key, 16*8, &k); 
						AES_cfb128_encrypt((unsigned char*)pt1, (unsigned char*)ct,
							16+5, &k, (unsigned char*)iv1, &num, AES_ENCRYPT);
				
						num=0;
						AES_set_encrypt_key(key, 16*8, &k); // MUST as enc
						AES_cfb128_encrypt((unsigned char*)ct, (unsigned char*)pt2,
							16+5, &k, (unsigned char*)iv2, &num, AES_DECRYPT);		
				
						if (memcmp(pt1, pt2, 16+5)==0)
							puts("AES CFB mode ok");
						else
							puts("AES CFB mode err");
					}
				
					return 0;
				}