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#include "base64.h"
void base64_encode_whole(const unsigned char bin[3], char encoded[4])
{
encoded[0] = base64_bin2asc[bin[0] >> 2];
encoded[1] = base64_bin2asc[(bin[0] << 4 | bin[1] >> 4) & 0x3f];
encoded[2] = base64_bin2asc[(bin[1] << 2 | bin[2] >> 6) & 0x3f];
encoded[3] = base64_bin2asc[bin[2] & 0x3f];
}
void base64_encode_part(const unsigned char bin[3], unsigned len,
char encoded[4])
{
encoded[0] = base64_bin2asc[bin[0] >> 2];
/* len must be 1 or 2, as 0 produces nothing, and 3 would be handled
* by _whole */
if (len == 1) {
encoded[1] = base64_bin2asc[(bin[0] << 4) & 0x3f];
encoded[2] = encoded[3] = BASE64_PAD;
}
else {
encoded[1] = base64_bin2asc[(bin[0] << 4 | bin[1] >> 4) & 0x3f];
encoded[2] = base64_bin2asc[(bin[1] << 2) & 0x3f];
encoded[3] = BASE64_PAD;
}
}
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