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Identity-based encryption (IBE), is an important primitive of identity-based cryptography. As such it is a type of public-key encryption in which the public key of a user is some unique information about the identity of the user (e.g. a user's email address). This means that a sender who has access to the public parameters of the system can ...
In 2015, he was awarded the Grace Murray Hopper Award for the introduction and development of the concepts of attribute-based encryption and functional encryption. [6] In 2019, he was named a Simons Investigator in theoretical computer science. [7] He was elected an ACM Fellow in 2021. [8]
As a specific method for identity-based encryption, the primary use case is to allow anyone to encrypt a message to a user when the sender only knows the public identity (e.g. email address) of the user. In this way, this scheme removes the requirement for users to share public certificates for the purpose of encryption.
The governing body of the Department of Public Safety is the Public Safety Commission, with all members being appointed by the Governor of Texas. The commission is responsible for appointing the director of the department. The director is assisted in managing the department by three deputy directors and multiple division chiefs.
Identity-based systems have a characteristic problem in operation. Suppose Alice and Bob are users of such a system. Since the information needed to find Alice's public key is completely determined by Alice's ID and the master public key, it is not possible to revoke Alice's credentials and issue new credentials without either (a) changing Alice's ID (usually a phone number or an email address ...
The earliest forms of Identity-based security was introduced in the 1960s by computer scientist Fernando Corbató. [4] During this time, Corbató invented computer passwords to prevent users from going through other people's files, a problem evident in his Compatible Time-Sharing System (C.T.S.S.), which allowed multiple users access to a computer concurrently. [5]
Cocks IBE scheme is an identity based encryption system proposed by Clifford Cocks in 2001. [1] The security of the scheme is based on the hardness of the quadratic residuosity problem . Protocol
In an identity-based conditional proxy re-encryption (IBCPRE) system, users set their public keys as unique identities of the users. One of the main advantages of using identity-based cryptographic algorithms is the elimination of public key certificates, which can help enhance the usability of the target security applications. The term ...