Revisiting the Security Model for Timed-Release Encryption with Pre-open Capability
نویسندگان
چکیده
The concept of timed-released encryption with pre-open capability (TRE-PC) was introduced by Hwang, Yum and Lee. In a TREPC scheme, a message is encrypted in such a way that it can only be decrypted at a certain point in time or if the sender releases a piece of trapdoor information known as a pre-open key. This paper examines the security model for a TRE-PC scheme, demonstrates that a TRE-PC scheme can be constructed using a KEM–DEM approach, and provides an efficient example of a TRE-PC scheme.
منابع مشابه
Revisiting the Security Model for Timed-Release Public-Key Encryption with Pre-Open Capability
In this paper we investigate a security model for Timed-Release Encryption schemes with Pre-Open Capability (TRE-PC schemes) proposed by Hwang, Yum, and Lee. Firstly, we show that the HYL model possesses a number of defects and fails to model some potentially practical security vulnerabilities faced by TRE-PC schemes. Secondly, we propose a new security model for TRE-PC schemes which models the...
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