摘要： A wrapper for Java's MD5 class that makes life a little easier. This class lets you produce an MD5 hashcode for some binary data. It is useful for storing passwords in databases or file systems, or f... 阅读全文

摘要： Microsoft Excel is a popular spreadsheet. It uses a file format called BIFF (Binary File Format). There are many types of BIFF records. Each has a 4 byte header. The first two bytes are an opcode that... 阅读全文