void Camellia_ofb128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const CAMELLIA_KEY *key,
unsigned char *ivec, int *num) {
void Camellia_ofb128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const CAMELLIA_KEY *key,
unsigned char *ivec, int *num) {