Showing papers on "Format-preserving encryption published in 2010"
01 Jan 2010
TL;DR: In this survey, FPE is described and known techniques for achieving it are reviewed, including FFX, a recent proposal made to NIST.
Abstract: Format-preserving encryption (FPE) encrypts a plaintext of some specified format into a ciphertext of the same format—for example, encrypting a social-security number into a social-security number. In this survey we describe FPE and review known techniques for achieving it. These include FFX, a recent proposal made to NIST.
••06 Dec 2010
TL;DR: This paper presents an FPE scheme for DateTime based on “rank-then-cipher” mode, and proposes a new more efficient approach named “reference-based offset encryption” to resolve the FPE problem on DateTime domain.
Abstract: In many applications, such as encryption of DateTime field in database, it is desirable to encrypt items from an arbitrarily sized set with the specified format described as “YYYY-MM-DD HH:MM:SS” onto that same set. Unfortunately, conventional block ciphers such as DES, 3DES or AES are unsuitable for this purpose. The solution to it belongs to the format-preserving encryption (FPE) category. In the paper, we present an FPE scheme for DateTime based on “rank-then-cipher” mode, and then analyze its security and efficiency. We further propose a new more efficient approach named “reference-based offset encryption” to resolve the FPE problem on DateTime domain, which can be applied in message space comprised of fixed-length strings taken over some alphabet as well.