Alternative to sprintf() for bytes buffer in C - sql

Question

Hello guys I have an issue when i try to put my bytes buffer into a sql buffer for sqlite3.c.
For example, I have this buffer:
static unsigned char bytes_buffer[] = {
0x30, 0x82, 0x01, 0x4b, 0x30, 0x82, 0x01, 0x03, 0x06, 0x07, 0x2a, 0x86,
0x48, 0xce, 0x3d, 0x02, 0x01, 0x30, 0x81, 0xf7, 0x02, 0x01, 0x01, 0x30,
0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x21,
0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 0x00}
My function to add this info into a sqlite3 query and insert into my database is the following:
unsigned char *sql=(unsigned char *)malloc((size_t)(sizeof(unsigned char)*SQL_SIZE));
sprintf(sql,"UPDATE table SET buffer='%s', WHERE id=%d",bytes_buffer,id);
printf("SQL: %s\n",sql);
if (sqlite3_exec(db, sql, NULL, NULL, NULL) != SQLITE_OK)
{
return SQLITE_ERROR;
}
else
return SQLITE_OK;
}
The problem is when i try to show the query content, because in the buffer parameter sprintf() stops when a null character (0x00) appears. I need a function similar to sprintf() where I can manage the parameters size. I tried snprintf() and also fails. Thank you so much.