21 citations · 50 across the 9 of their papers we have counts for
10 papers
On the Analysis of the Revocable-Storage Identity-Based Encryption Scheme
Kwangsu Lee
Cloud computing can provide a flexible way to effectively share data among multiple users since it can overcome the time and location constraints of computing resource usage. Howev…
Multi-Client Order-Revealing Encryption
Jieun Eom, Dong Hoon Lee, Kwangsu Lee
Order-revealing encryption is a useful cryptographic primitive that provides range queries on encrypted data since anyone can compare the order of plaintexts by running a public co…
Ciphertext Outdate Attacks on the Revocable Attribute-Based Encryption Scheme with Time Encodings
Kwangsu Lee
Cloud storage is a new computing paradigm that allows users to store their data in the cloud and access them anytime anywhere through the Internet. To address the various security…
Permutation Generators Based on Unbalanced Feistel Network: Analysis of the Conditions of Pseudorandomness
Kwangsu Lee
A block cipher is a bijective function that transforms a plaintext to a ciphertext. A block cipher is a principle component in a cryptosystem because the security of a cryptosystem…
Efficient Hidden Vector Encryptions and Its Applications
Kwangsu Lee
Predicate encryption is a new paradigm of public key encryption that enables searches on encrypted data. Using the predicate encryption, we can search keywords or attributes on enc…
Transforming Hidden Vector Encryption Schemes from Composite to Prime Order Groups
Kwangsu Lee
Predicate encryption is a new type of public key encryption that enables searches on encrypted data. By using predicate encryption, we can search keywords or attributes on encrypte…
Revocable Hierarchical Identity-Based Encryption from Multilinear Maps
Seunghwan Park, Dong Hoon Lee, Kwangsu Lee
In identity-based encryption (IBE) systems, an efficient key delegation method to manage a large number of users and an efficient key revocation method to handle the dynamic creden…
Anonymous HIBE with Short Ciphertexts: Full Security in Prime Order Groups
Kwangsu Lee, Jong Hwan Park, Dong Hoon Lee
Anonymous Hierarchical Identity-Based Encryption (HIBE) is an extension of Identity-Based Encryption (IBE), and it provides not only a message hiding property but also an identity…
Sequential Aggregate Signatures with Short Public Keys without Random Oracles
Kwangsu Lee, Dong Hoon Lee, Moti Yung
The notion of aggregate signature has been motivated by applications and it enables any user to compress different signatures signed by different signers on different messages into…
Security Analysis of the Unrestricted Identity-Based Aggregate Signature Scheme
Kwangsu Lee, Dong Hoon Lee
Aggregate signatures allow anyone to combine different signatures signed by different signers on different messages into a single short signature. An ideal aggregate signature sche…