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2023年12月12日发(作者:)

c语言对字符串进行sha1,C语言openssl库SHA1调用

1.源码实现

#include

#include

#include

#include

#define MAX_DATA_LEN 1024

#define SHA1_LENTH 20

int main(int argc, char **argv)

{

SHA_CTX sha1_ctx;

FILE *fp = NULL;

char *strFilePath = argv[1];

unsigned char SHA1result[SHA1_LENTH];

char DataBuff[MAX_DATA_LEN];

int len;

int t = 0;

int i;

fp = fopen(strFilePath, "rb"); //打开文件

do

{

SHA1_Init(&sha1_ctx);

while(!feof(fp))

{

memset(DataBuff, 0x00, sizeof(DataBuff));

len = fread(DataBuff, 1, MAX_DATA_LEN, fp);

if(len)

{

t += len;

//printf("len = [%d] 1n", len);

SHA1_Update(&sha1_ctx, DataBuff, len); //将当前文件块加入并更新SHA1

}

}

//printf("len = [%d]n", t);SHA1_Final(SHA1result,&sha1_ctx); //获取SHA1

puts("file SHA1:");

for(i = 0; i

{

printf("%02x", (int)SHA1result[i]);

}

puts("n");

} while(0);

SHA1((const unsigned char*)strFilePath, strlen(strFilePath), SHA1result); //获取字符串SHA1

puts("string SHA1:");

for(i = 0; i < SHA1_LENTH; i++)

{

printf("%02x", (int)SHA1result[i]);

}

puts("n");

return 0;

}

2.编译源码

$ gcc -I$HOME/local/include -o example example.c -L$HOME/local/lib -lssl

3.运行结果

$ ./example file

file SHA1:

52d87199fb07eae526d404d6527fdbe0d2a9315b

string SHA1:

1b6453892473a467d07372d45eb05abc2031647a

本文标签: 字符串文件源码C语言进行