Paper Info
Title
Quantum ciphertext authentication and key recycling with the trap code.
Abstract
We investigate quantum authentication schemes constructed from quantum error-correcting codes. We show that if the code has a property called purity testing, then the resulting authentication scheme guarantees the integrity of ciphertexts, not just plaintexts. On top of that, if the code is strong purity testing, the authentication scheme also allows the encryption key to be recycled, partially even if the authentication rejects. Such a strong notion of authentication is useful in a setting where multiple ciphertexts can be present simultaneously, such as in interactive or delegated quantum computation. With these settings in mind, we give an explicit code (based on the trap code) that is strong purity testing but, contrary to other known strong-purity-testing codes, allows for natural computation on ciphertexts.
Year
DOI
Venue
2018
10.4230/LIPIcs.TQC.2018.1
TQC
DocType
Volume
Citations 
Conference
abs/1804.02237
0
PageRank 
References 
Authors
0.34
8
2
Name
Order
Citations
PageRank
Yfke Dulek100.34
Florian Speelman2445.61