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TLS, sometimes called by its older name Secure Sockets Layer (SSL), is notable for being a part of HTTPS, a protocol for securely browsing the web. In a typical public-key infrastructure (PKI) scheme, the certificate issuer is a certificate authority (CA), [ 3 ] usually a company that charges customers a fee to issue certificates for them.
Transport Layer Security (TLS) is a cryptographic protocol designed to provide communications security over a computer network. The protocol is widely used in applications such as email, instant messaging, and voice over IP, but its use in securing HTTPS remains the most publicly visible.
Server Name Indication ( SNI) is an extension to the Transport Layer Security (TLS) computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. [ 1] The extension allows a server to present one of multiple possible certificates on the same IP address and TCP ...
The Transport Layer Security (TLS) protocol provides the ability to secure communications across or inside networks. This comparison of TLS implementations compares several of the most notable libraries. There are several TLS implementations which are free software and open source . All comparison categories use the stable version of each ...
Application-Layer Protocol Negotiation. Application-Layer Protocol Negotiation ( ALPN) is a Transport Layer Security (TLS) extension that allows the application layer to negotiate which protocol should be performed over a secure connection in a manner that avoids additional round trips and which is independent of the application-layer protocols.
Hypertext Transfer Protocol Secure ( HTTPS) is an extension of the Hypertext Transfer Protocol (HTTP). It uses encryption for secure communication over a computer network, and is widely used on the Internet. [ 1 ][ 2 ] In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS) or, formerly, Secure Sockets Layer (SSL).
The Domain Name System Security Extensions ( DNSSEC) are a suite of extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System ( DNS) in Internet Protocol ( IP) networks. The protocol provides cryptographic authentication of data, authenticated denial of existence, and data ...
The United Kingdom Electronic Travel Authorisation ( ETA) is an advance travel permission required from foreign nationals who intend to visit or transit the United Kingdom without a visa. [ 1] The system, as part of the Nationality and Borders Act 2022, operates using an online application whose information is checked against security databases.