char *sha1_base32 = malloc (BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1 + 5 );
base32_encode (sha1_digest, SHA1_DIGEST_SIZE, sha1_base32 + 5,
BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1);
char *sha1_base32 = malloc (BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1 + 5 );
base32_encode (sha1_digest, SHA1_DIGEST_SIZE, sha1_base32 + 5,
BASE32_LENGTH(SHA1_DIGEST_SIZE) + 1);