char* base64_encode(const char* data, int data_len); char *base64_decode(const char* data, int data_len); static char find_pos(char ch); int main(int argc, char* argv[]) { char *t = "那个abcd你好吗,哈哈,ANMOL"; int i = 0; int j = strlen(t); char *enc = base64_enco...
base64_decode(outstr1,strlen(outstr1),outstr2); printf("str:%s\n",outstr2);return0; }
unsigned char *bae64_decode(unsigned char *code); #endif /*base64.c*/ #include "base64.h" unsigned char *base64_encode(unsigned char *str) { long len; long str_len; unsigned char *res; int i,j; //定义base64编码表 unsigned char *base64_table="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn...
/* base64 alphabet, taken from rfc3548 */ char *b64alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; char *buf = dest; /* Encode three bytes per iteration a la rfc3548. */ while (len >= 3) { buf[0] = b64alpha[(data[0] >> 2) & 0x3f]; buf[1] = ...
以HTML或CSS为例，通过Base64编码的图像数据可直接用作背景图像，无需额外HTTP请求，从而在某些情况下提升页面加载速度，尽管这可能会因Base64编码导致文件大小略有增加，通常约为原始数据的33%。具体编码过程如下：将输入的二进制数据读入内存缓冲区。遍历缓冲区，每次取出24位数据（即3个字节），这足以生成4个Base64...
}// Base64解码函数unsignedchar*base64_decode(constchar*input,int*output_length){inti, j;intdecoded_length =strlen(input) *3/4;unsignedchar*decoded = (unsignedchar*)malloc(decoded_length +1);if(decoded ==NULL)returnNULL;for(i =0, j =0; i <strlen(input);) {intsextet_a = i <strlen...
在C语言中实现Base64编解码,我们需要先理解Base64编解码的原理,然后编写相应的编码和解码函数,并测试这些函数的正确性。以下是详细的步骤和代码实现: 1. 理解Base64编解码的原理 Base64编码是将二进制数据转换为只包含64个可打印字符的ASCII字符串的编码方式。它通常用于在需要处理文本数据的场合表示、传输或存储二进...
int base64_decode(const char *in, uint8_t *out, uint16_t *out_len) { uint16_t i = 0, cnt = 0; uint8_t c, in_data_cnt; bool error_msg = false; uint32_t tmp = 0; if ((!in) || (!out) || (!out_len)) { ...
{ uint32_t sextet_a = base64_decode_char(input[i++]); uint32_t sextet_b = base64_decode_char(input[i++]); uint32_t sextet_c = base64_decode_char(input[i++]); uint32_t sextet_d = base64_decode_char(input[i++]); uint32_t triple = (sextet_a << 18) + (sextet_b ...
1617功能描述:18BASE64编码和解码1920接口函数:21Base64_Encode22Base64_Decode2324说明:251. 参考openssl-1.0.0。262. 改进接口,以使其适应TCHAR字符串。273. 修正EVP_DecodeBlock函数解码时未去掉填充字节的缺陷。28---*/29#pragmaonce30#include"stdafx.h"#include <windows.h>3132#ifdef __cplusplus33extern...