加密(一)我们看了加密的引入以及加密的思路,下面我们来看看加密方式具体是怎么实现的,以及引出签名
单向散列函数(One-way hash function)
![](https://img.haomeiwen.com/i9540884/59f0ef1a5de10b8c.png)
EncryptionSignature_19.png
单向散列函数的特点
![](https://img.haomeiwen.com/i9540884/afa0950d6f20c67e.png)
EncryptionSignature_20.png
单向散列函数
![](https://img.haomeiwen.com/i9540884/5d637c36be1bb8f3.png)
EncryptionSignature_21.png
如何防止数据被篡改
![](https://img.haomeiwen.com/i9540884/c0da48beed5cd0d7.png)
EncryptionSignature_22.png
单向散列函数的应用1
![](https://img.haomeiwen.com/i9540884/d7181aa99bf6a3c3.png)
EncryptionSignature_23.png
单向散列函数的应用2
![](https://img.haomeiwen.com/i9540884/15eb09789751ff24.png)
EncryptionSignature_24.png
想象以下场景
![](https://img.haomeiwen.com/i9540884/8dee45afb15f580d.png)
EncryptionSignature_25.png
数字签名
![](https://img.haomeiwen.com/i9540884/59f30390fbef2ad8.png)
EncryptionSignature_26.png
数字签名和公钥密码
![](https://img.haomeiwen.com/i9540884/177c71d85d701d3a.png)
EncryptionSignature_27.png
数字签名的过程
![](https://img.haomeiwen.com/i9540884/afbabdf6c2238116.png)
EncryptionSignature_28.png
数字签名的过程 – 改进
![](https://img.haomeiwen.com/i9540884/8e71c2208ba839ef.png)
EncryptionSignature_29.png
数字签名 – 疑惑
![](https://img.haomeiwen.com/i9540884/706d1b48133b1909.png)
EncryptionSignature_30.png
数字签名无法解决的问题
![](https://img.haomeiwen.com/i9540884/8b28438d8b7c1a58.png)
EncryptionSignature_31.png
证书(Certificate)
![](https://img.haomeiwen.com/i9540884/5a6588530133dbe8.png)
EncryptionSignature_32.png
证书的利用
![](https://img.haomeiwen.com/i9540884/b71951d0c982e6bc.png)
EncryptionSignature_33.png
证书的注册和下载
![](https://img.haomeiwen.com/i9540884/8384a3bf96690c93.png)
EncryptionSignature_34.png
友情链接