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数字签名只能够验证 服务器发过来的数据有没有被篡改过是吗?
我理解 是的。因为私钥只存在于服务器,服务器对报文摘要使用私钥加密,到客户端用公约解密。。

另外一个问题: 客户端发送给服务器的数据如何防止被篡改,这个也是通过数字签名来解决吗? 数字签名中发送方要有私钥,接收方要有公约,服务器会有数字签名中的公钥吗?


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双方传输前都会加密的


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