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Foundations of Format-Preserving Encryption

25 Mar
Wednesday, 03/25/2020 12:15pm to 1:15pm
Theory Seminar
Speaker: Joseph M. Spitzer

To view this live seminar via Zoom, visit: https://umass-amherst.zoom.us/j/440256942

Abstract: As the name implies, format-preserving encryption (FPE) is the process of encrypting plain-text such that the corresponding cipher-text maintains the format of the data. The desire for such an encryption scheme arises naturally in the transfer, use, and storage of sensitive information. Given the rapid growth of confidential data, this subfield of cryptography has increasing practical relevance. In this talk, we will outline a few of the foundations for FPE schemes, such as cycle-walking and rank-then-encipher, as well as preview some more recent results. No prior knowledge in cryptography is assumed as the necessary primitives will be discussed to start, including defining adversarial advantage, PRPs/PRFs, and block ciphers.