加密是日常生活中一个晦涩但至关重要的部分。您正在访问的网站地址栏中的挂锁代表“ http”后的“ s”，代表最新版本的传输层安全性（TLS）。这些数字安全技术与TLS取代的安全套接字层（SSL）一起，允许在网站或服务器以及Web浏览器等两方之间进行加密通信。 像Internet本身一样，这些技术在构思时就是突破性的。以前，加密的安全通信需要物理交换密钥，而新方法允许彼此未知的各方之间进行安全通信。 公钥加密也称为非对称加密，它是通过一对密钥来实现的：一个可以广泛共享的公共密钥，另一个是秘密的私有密钥。 公钥基础结构（PKI）的常见部署利用了Diffie-Hellman密钥交换，该交换器位于浏览器地址栏中的安全图标后面； RSA算法（以其发明者的名字命名）：Ron Rivest，Adi Shamir和Leonard Adleman。
原文标题：The Past, Present and Future of Attribute-Based Encryption
原文：Encryption is an obscure but critical part of everyday life. That padlock in the address bar of the website you're visiting represents the 's' after 'http' -- which stands for the latest version of Transport Layer Security (TLS). Together with Secure Sockets Layer (SSL), which TLS replaced, these digital security technologies allow encrypted communication between two parties, such as web sites or servers, and web browsers.
Like the Internet itself, these technologies were breakthroughs when conceived. Whereas previously, encrypted secure communication required a physical exchange of keys, the new approaches allowed secure communication between parties unknown to each other.
Public-key cryptography, also described as asymmetric encryption, did so through a pair of keys: one public, which can be shared widely, and the other private, which is kept secret.
Common deployments of public key infrastructure (PKI) leverage the Diffie-Hellman key exchange, which stands behind the secure icon in your browser's address bar; and the RSA algorithm, which is named after its inventors: Ron Rivest, Adi Shamir and Leonard Adleman.
