rsa_example.c

来自「Dr.Sec高速密码算法库Windows版」· C语言 代码 · 共 51 行

#include <windows.h>
#include <stdio.h>
#include <time.h>
#include "rsa.h"

#define NUM 1000
int ds_rsaGenerateKeyPair(rsaPublicKey *pbKey, rsaPrivateKey *pvKey, u32 bits, u32 useFermat4);
int ds_rsaPublicEncrypt  (u8 *out, u32 *outLen, u8 *in, u32 inLen, rsaPublicKey  *pbKey, u8 *random, u32 randomLen);
int ds_rsaPrivateEncrypt (u8 *out, u32 *outLen, u8 *in, u32 inLen, rsaPrivateKey *pvKey);
int ds_rsaPublicDecrypt  (u8 *out, u32 *outLen, u8 *in, u32 inLen, rsaPublicKey  *pbKey);
int ds_rsaPrivateDecrypt (u8 *out, u32 *outLen, u8 *in, u32 inLen, rsaPrivateKey *pvKey);

char plain[10]="abcdefghi";
char cipher[400],restore[400];
int plainlen=10,cipherlen=400,restorelen=400;
rsaPublicKey pb_key;
rsaPrivateKey pv_key;
char str[512];
char pad[512];

void rsa_example()
{
	clock_t start,finish;
	int i;

	ds_rsaGenerateKeyPair(&pb_key, &pv_key, 1024, 0);

	sprintf(str,"Plain:%s\r\n",plain);
	start=clock();
	for(i=0;i<NUM;i++)
		ds_rsaPrivateEncrypt(cipher,&cipherlen,plain,plainlen,&pv_key);
	finish=clock();
	sprintf(str+strlen(str), "%.4f seconds spent in sign\r\n", (double)(finish - start) / CLOCKS_PER_SEC );

	start=clock();
	for(i=0;i<NUM;i++)
		ds_rsaPublicDecrypt(restore,&restorelen,cipher,cipherlen,&pb_key);
	finish=clock();
	sprintf(str+strlen(str), "%.4f seconds spent in verify\r\n", (double)(finish - start) / CLOCKS_PER_SEC );
	sprintf(str+strlen(str),"After private encrypt and public decrypt:%s\r\n",restore);
	
	srand( (unsigned)time( NULL ) );
	for(i=0;i<sizeof(pad);i++)
		pad[i]=rand();

	ds_rsaPublicEncrypt(cipher,&cipherlen,plain,plainlen,&pb_key,pad,sizeof(pad));
	ds_rsaPrivateDecrypt(restore,&restore,cipher,&cipherlen,&pv_key);
	sprintf(str+strlen(str),"\r\nAfter public encrypt and private decrypt:%s\r\n",restore);
	MessageBox(NULL,str,"RSA test",MB_OK);
}