main.c

tea c加密算法源码

//TEA test program written by HappyTown   [2006-10-10]
#include <stdio.h>
#include <stdlib.h>

#include "tea.h"

int main()
{
	int i;
	unsigned char k[16] = {0x1A,0x2B,0x3C,0x4D,0x5E,0x6F,0xAB,0xCD
							,0x1A,0x2B,0x3C,0x4D,0x5E,0x6F,0xAB,0xCD};//128bits key
	unsigned char data[8] = {0x68,0x61,0x70,0x70,0x68,0x61,0x70,0x70};//plaintext
	unsigned char outEn[8] = {0};	//cipher

	//以十六进制输出密钥k
	printf("Key is:");
	for (i=0; i<16; i++)
	{
		printf("%02X", k[i]);
	}
	printf("\n");

	//加密明文data，并输出密文
	TEA_Encrypt(outEn, data, k);
	printf("TEA(");
	for (i=0; i<8;i++)
	{
		printf("%c", data[i]);
	}
	printf(") is:");
	for (i=0; i<8; i++)
	{
		printf("%02X", outEn[i]);
	}

	printf("\n");

	//解密上一步的密文outEn，并输出明文
	TEA_Decrypt(data, outEn, k);
	printf("Data is:");
	for (i=0; i<8;i++)
	{
		printf("%c", data[i]);
	}
	printf("\n\n");
	system("pause");
	return 0;
}