发布时间 : 星期二 文章MD5 报文摘要算法源码更新完毕开始阅读1a4d446ca300a6c30c229f90
unsigned int len; {
unsigned int i;
for (i = 0; i < len; i++)
((char *)output)[i] = (char)value; }
A.4 mddriver.c
/* MDDRIVER.C - MD2, MD4 and MD5测试程序 */
/* RSA数据安全公司（RSA Data Security, Inc.）从来没有出于任何特定目的陈述过关于此软件的可买性和实用性，它提供了“as is”,没有表达或暗示过任何理由。此声明必须在任何此文件和软件的任何拷贝中保留。*/ /* 如果没有定义C编译标志的值，则MD5缺省状态下为MD5 */ #ifndef MD
#define MD MD5 #endif
#include
#include \#endif
#if MD == 4
#include \#endif
#if MD == 5
#include \#endif
/* 测试分组长度和数量 */ #define TEST_BLOCK_LEN 1000 #define TEST_BLOCK_COUNT 1000
static void MDString PROTO_LIST ((char *)); static void MDTimeTrial PROTO_LIST ((void)); static void MDTestSuite PROTO_LIST ((void)); static void MDFile PROTO_LIST ((char *)); static void MDFilter PROTO_LIST ((void));
static void MDPrint PROTO_LIST ((unsigned char [16]));
#if MD == 2
#define MD_CTX MD2_CTX #define MDInit MD2Init #define MDUpdate MD2Update #define MDFinal MD2Final #endif
#if MD == 4
#define MD_CTX MD4_CTX #define MDInit MD4Init #define MDUpdate MD4Update #define MDFinal MD4Final #endif
#if MD == 5
#define MD_CTX MD5_CTX #define MDInit MD5Init #define MDUpdate MD5Update #define MDFinal MD5Final #endif
/* 主程序. 变量:
-sstring – 摘要字符串 -t - 运行时间测试 -x - 运行测试脚本 filename – 摘要文件 (none) - 摘要标准输入 */
int main (argc, argv) int argc;
char *argv[]; {
int i;
if (argc > 1)
for (i = 1; i < argc; i++)
if (argv[i][0] == '-' && argv[i][1] == 's') MDString (argv[i] + 2);
else if (strcmp (argv[i], \ MDTimeTrial ();
else if (strcmp (argv[i], \ MDTestSuite (); else
MDFile (argv[i]);
else
MDFilter ();
return (0); }
/* 计算字符串的摘要并打印其值 */ static void MDString (string) char *string; {
MD_CTX context;
unsigned char digest[16];
unsigned int len = strlen (string);
MDInit (&context);
MDUpdate (&context, string, len); MDFinal (digest, &context);
printf (\ MDPrint (digest); printf (\}
/* 测试计算 TEST_BLOCK_COUNT TEST_BLOCK_LEN-byte 分组摘要的时间 */
static void MDTimeTrial () {
MD_CTX context;
time_t endTime, startTime;
unsigned char block[TEST_BLOCK_LEN], digest[16]; unsigned int i;
printf
(\ TEST_BLOCK_LEN, TEST_BLOCK_COUNT);
/* 初始化分组*/
for (i = 0; i < TEST_BLOCK_LEN; i++) block[i] = (unsigned char)(i & 0xff);
/* 开始时钟 */ time (&startTime);
/* 摘要分组 */
MDInit (&context);
for (i = 0; i < TEST_BLOCK_COUNT; i++) MDUpdate (&context, block, TEST_BLOCK_LEN); MDFinal (digest, &context);
/* 停止时钟 */ time (&endTime);
printf (\ printf (\ MDPrint (digest);
printf (\ printf
(\
(long)TEST_BLOCK_LEN * (long)TEST_BLOCK_COUNT/(endTime-startTime)); }
/* 计算一个参考组件串的摘要并打印结果*/ static void MDTestSuite () {
printf (\
MDString (\ MDString (\ MDString (\
MDString (\
MDString (\ MDString
(\ MDString
(\1234567890123456789012345678901234567890\}
/*计算一个文件的摘要并打印结果 */ static void MDFile (filename) char *filename; {
FILE *file; MD_CTX context; int len;
unsigned char buffer[1024], digest[16];
if ((file = fopen (filename, \