Secure key issuing cryptography
- Secure key issuing cryptography
Secure key issuing is variant of ID-based cryptography that reduces the level of trust that needs to be placed in a trusted third party by spreading the trust across multiple third parties. In addition to the normally transmitted information the user supplies what is known as "blinding" informationwhich can be used to blind (hide) data so that only the user can later retrieve it. The third party provides a "blinded" partial private key, which is then passed on to several other third party in order, each adding another part of the key before blinding it and passing it on. Once the user gets the key they (and only they) can unblind it and retrieve their full private key, after which point the system becomes the same as identity based cryptography.
If all of the third parties cooperate they can recover the private key, so key escrow problems arise only if all of the third parties are untrustworthy. In other areas of information security this is known as a cascade, if every member of the cascade is independent and the cascade is large then the system may be considered trustworthy in actual practice.
Wikimedia Foundation.
2010.
Look at other dictionaries:
Topics in cryptography — This article is intended to be an analytic glossary , or alternatively, an organized collection of annotated pointers.Classical ciphers*Autokey cipher *Permutation cipher*Polyalphabetic substitution **Vigenère cipher*Polygraphic substitution… … Wikipedia
Outline of cryptography — See also: Index of cryptography articles The following outline is provided as an overview of and topical guide to cryptography: Cryptography (or cryptology) – practice and study of hiding information. Modern cryptography intersects the… … Wikipedia
Public-key cryptography — In an asymmetric key encryption scheme, anyone can encrypt messages using the public key, but only the holder of the paired private key can decrypt. Security depends on the secrecy of that private key … Wikipedia
Public key certificate — Diagram of an example usage of digital certificate In cryptography, a public key certificate (also known as a digital certificate or identity certificate) is an electronic document which uses a digital signature to bind a public key with an… … Wikipedia
Certificate authority — In cryptography, a certificate authority, or certification authority, (CA) is an entity that issues digital certificates. The digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others… … Wikipedia
Skype security — Skype is a Voip system developed by Skype Technologies S.A., and owned by eBay. It is a peer to peer based network in which voice calls don’t pass through a central server. Skype users search for other users to connect to, enabling them to search … Wikipedia
Man-in-the-middle attack — Not to be confused with Meet in the middle attack. In cryptography, the man in the middle attack (often abbreviated MITM), bucket brigade attack, or sometimes Janus attack, is a form of active eavesdropping in which the attacker makes independent … Wikipedia
Transport Layer Security — (TLS) and its predecessor, Secure Sockets Layer (SSL), are cryptographic protocols that provide secure communications on the Internet for such things as web browsing, e mail, Internet faxing, instant messaging and other data transfers. There are… … Wikipedia
Kerberos (protocol) — Kerberos is a computer network authentication protocol, which allows individuals communicating over a non secure network to prove their identity to one another in a secure manner. It is also a suite of free software published by Massachusetts… … Wikipedia
Identity document — National identity card redirects here. For cards referred to in the English language as national identity card , see National identity card (disambiguation). An identity document (also called a piece of identification or ID, or colloquially as… … Wikipedia
