Pre-Grant Publication Number: 20100246827
View Prior Art submitted by the community. You can see full text, rate and annotate the Prior Art by clicking on
any of the listed Prior Art references. You can also click on the name of the person who submitted art to view their profile
and any other Prior Art they have previously submitted.
How to Rate Prior Art
Rating Prior Art - Click the thumbs up or down to indicate if a submission is relevant enough to the claims of the application to deserve a spot in the Top 10 submissions that will be forwarded to the patent examiner. Rating should be based only on relevance. For an explanation of prior art, please visit the Tutorial Page.
Rating Prior Art - Click the thumbs up or down to indicate if a submission is relevant enough to the claims of the application to deserve a spot in the Top 10 submissions that will be forwarded to the patent examiner. Rating should be based only on relevance. For an explanation of prior art, please visit the Tutorial Page.
Prior Art (9)
Title Identity-Based Encryption Gone Wild
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.
Title Policy-Based Cryptography and Applications
Description
This paper presents policy-based encryption and signature schemes with respect to credential-based policies formalized as boolean expressions written in generic conjunctive-disjunctive normal form.
Title Searchable Encryption Revisited: Consistency Properties, Relation to Anonymous IBE, and Extensions
Description
This paper makes the relation between (hierarchical) identity-based encryption and searchable encryption explicit, and also provides extensions such as ID-based searchable encryption and temporarily searchable encryption that make clever use of the hierarchical key structure.
Title Public Key Encryption with Keyword Search
Description
This paper presents the first public-key searchable encryption scheme. Hereby, the owner of a decryption key can give away a piece of trapdoor information to a third party so that the latter can test whether an encrypted ciphertext contains a certain keyword, but cannot obtain any information about the encrypted plaintext beyond that fact.
Title A Forward-Secure Public-Key Encryption Scheme
Description
This paper gives a scheme to ensure secrecy of previously encrypted messages even if the decryption keys are leaked at some point in the future. The construction makes clever use of the key hierarchy in hierarchical identity-based encryption schemes.
Title Hierarchical ID-Based Cryptography
Description
This paper contains the first hierarchical identity-based encryption scheme. Here, each user in the system is identified by a vector of strings, e.g., (com, microsoft, steveballmer) and has a decryption key corresponding to this vector. Each user can derive decryption keys for its "descendants", e.g., the owner of secret key (com, microsoft) can derive keys for any user (com, microsoft, *), (com, microsoft, *, *) etc.
Title Lecture Notes in Computer Science
ISBN
Description
A Hierarchical Identity Based Encryption (HIBE)
system
Title
ISBN 3-540-00171-9
Description
An earlier (2002) description of hierarchy cryptography that [[prior art 1]] builds on.
Title
ISBN 0-7695-2369-2
Description
An encryption method for encrypting sensitive information in a computer environment that describes a method for Hierarchical Identity Based Encryption.
0 days left
