base64

Small and simple base64 library programmed in C. Currently ONLY tested and developt on little endian systems! Keep that in mind!

Benchmark

Measured were (10000 * 250 ) encoding calls.

Compile

To compile the library, simply run the script 'build.sh'. Or directly in your bash:

gcc base.c ./lib/b64.c -Wall -O3 -s -std=c99 -o base

Encodind with compiled bin

./base "base64 implementation makes fun"
YmFzZTY0IGltcGxlbWVudGF0aW9uIG1ha2VzIGZ1bg==

Decoding with compiled bin

./base -d YmFzZTY0IGltcGxlbWVudGF0aW9uIG1ha2VzIGZ1bg==
base64 implementation makes fun

Usage in your C program

If you only want to use the library, you can find a complete example in the base.c file.

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "./lib/b64.h"


void usage() {
    printf("encode: './b4 <value>'\n");
    printf("decode: './b4 -d <value>'\n");
}

int main(int argc, char *argv[]) {

    if (argc == 2) {
        
        char *input = argv[1];
        b64_encoded_t *b_out = encode_base_64(input);

        printf("%s\n", b_out);
        free(b_out);
       
    } else if (argc == 3) {
     
        char *input = argv[2];
        b64_decoded_t *b_out = decode_base64(input);
        
        printf("%s\n", b_out);
        free(b_out);
    } else {
        usage();
        return EXIT_FAILURE;
    }
}

Testing

The test is written in python. Simple run the following commands for testing:

#decoding test
python3 decoding_test.py

#encoding test
python3 encoding_test.py