求翻译：因为入侵者可以窜改讯息或编造一个讯息，由于哈希方法是公开的，所以入侵者可以生成该讯息的摘要。将窜改后的讯息加上摘要再发送出去，这样接收方接到讯息后完全无法发现讯息被改过了。是什么意思？

Because the intruder can tamper with messages or make up a message, the hash method is public, so the intruder can generate a summary of the message. After tampering with the summary of the message and then send out, so that the recipient received the message after that message was not completely tu

Because Intruders can alter messages or fabricating a message hash method, because it is open to the public, and so therefore Intruders can generate the message digest. The message will be altered after the summary sent out again, so that after receiving parties received messages become completely u

Because the intruder may revise correct the news or compile a news, because the Hasche method is public, therefore the intruder may produce this news the abstract.Will revise correct after the news to add on the abstract to transmit again, after such receiving end receives the news to be unable to d

Because an intruder can tamper with messages or invent a message, since hash method is public, so that intruders can generate the message digest. Altered after the message plus the summary then sent after receiving the message that the receiver completely unable to find a message from being modified

Because the intruder can tamper with messages or make up a message, the hash method is public, so the intruder can generate a summary of the message. After tampering with the summary of the message and then send out, so that the recipient received the message after that message was not completely tu