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#include <common/base64.h>
#include <sodium.h>
#include <sodium/utils.h>
/* Decode/encode from/to base64, base64 helper functions.
* We import base64 from libsodium to generate tor V3 ED25519-V3 onions from blobs
*/
char *b64_encode(const tal_t *ctx, const u8 *data, size_t len)
{
char *str = tal_arr(ctx, char, sodium_base64_encoded_len(len, sodium_base64_VARIANT_ORIGINAL) + 1);
str = sodium_bin2base64(str, tal_count(str), data,
len, sodium_base64_VARIANT_ORIGINAL);
return str;
}
u8 *b64_decode(const tal_t *ctx, const char *str, size_t len)
{
size_t bin_len = len + 1;
u8 *ret = tal_arr(ctx, u8, bin_len);
if (!sodium_base642bin(ret,
tal_count(ret),
(const char * const)str,
len,
NULL,
&bin_len,
NULL,
sodium_base64_VARIANT_ORIGINAL))
return tal_free(ret);
ret[bin_len] = 0;
tal_resize(&ret, bin_len + 1);
return ret;
}