C语言base64编码解码库

b64.c ===== Base64 encode/decode ## install ```sh $ clib install littlstar/b64.c ``` ## usage ```c #include <b64/b64.h> ``` or ```c #include <b64.h> ``` ```c #include <stdio.h> #include <string.h> #include <stdlib.h> #include "b64.h" int main (void) { unsigned char *str = "brian the monkey and bradley the kinkajou are friends"; char *enc = b64_encode(str, strlen(str)); printf("%s\n", enc); // YnJpYW4gdGhlIG1vbmtleSBhbmQgYnJhZGxleSB0aGUga2lua2Fqb3UgYXJlIGZyaWVuZHM= char *dec = b64_decode(enc, strlen(enc)); printf("%s\n", dec); // brian the monkey and bradley the kinkajou are friends free(enc); free(dec); return 0; } ``` ## api Base64 index table ```c static const char b64_table[] = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' }; ``` Encode `unsigned char *` source with `size_t` size. Returns a `char *` base64 encoded string ```c char * b64_encode (const unsigned char *, size_t); ``` Dencode `char *` source with `size_t` size. Returns a `unsigned char *` base64 decoded string ```c unsigned char * b64_decode (const char *, size_t); ``` ## license MIT