Pre-Grant Publication Number: 20100246827
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Prior Art Detail
Summary / Description
| Summary / Description | This paper generalizes the key hierarchy so that "wildcard" can occur anywhere in the vector, not just at the end. E.g., the owner of the key (*, microsoft, steveballmer) can generate the decrypt key for (com, microsoft, steveballmer), (ca, microsoft, steveballmer), etc. |
Basic Information
| Type of Prior Art | Online Publication |
| URL | http://www.di.ens.fr/~mabdalla/... |
| Author/Creator | Michel Abdalla, Dario Catalano, Alexander W. Dent, John Malone-Lee, Gregory Neven, Nigel P. Smart |
| Title | Identity-Based Encryption Gone Wild |
| Publication Date | December 9, 2006 |
| Publisher | ICALP (2) 2006 |
| Directions to Document Location | |
| Additional Information | pages 300-311 |
Notes / To Do
| Notes | Prior art identified by Gregory Neven, IBM, and submitted by Diane Willis. |
Excerpt
Excerpt Abstract
In this paper we introduce a new primitive called identity-based encryption with wildcards, or WIBE for short. It allows to encrypt messages to a whole range of users simultaneously whose identities match a certain pattern. This pattern is defined through a sequence of fixed strings and wildcards, where any string can take the place of a wildcard in a matching identity. Our primitive can be applied to provide an intuitive way to send encrypted email to groups of users in a corporate hierarchy. We propose a full security notion and give efficient implementations meeting this notion under different pairing-related assumptions, both in the random oracle model and in the standard model. |
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