Projects

Showing 3 matching records.

Block Cipher Techniques

Approved Algorithms Currently, there are two (2) Approved* block cipher algorithms that can be used for both applying cryptographic protection (e.g., encryption) and removing or verifying the protection that was previously applied (e.g., decryption): AES and Triple DES. Two (2) other block cipher algorithms were previously approved: DES and Skipjack; however, their approval has been withdrawn. See the discussions below for further information; also see SP 800-131A Rev. 1, Transitions:...

Masked Circuits for Block-Ciphers

A main goal of circuit masking is to make more difficult the illegitimate exfiltration of secrets from a circuit evaluation. Masking schemes use secret-sharing of the input bits of a circuit and recompile the circuit logic to ensure that important properties of the secret sharing remain across the circuit evaluation. Recent documents: feedback 2021a compilation (updated 2022-Jan-27); project scope (updated 2022-Jan-24) Upcoming (1st half of 2022): Public Call for Concrete Masked Circuits...

Multi-Party Threshold Cryptography MPTC

The multiparty paradigm of threshold cryptography enables a secure distribution of trust in the operation of cryptographic primitives. This can apply, for example, to the operations of key generation, signing, encryption and decryption. This project focuses on threshold schemes for cryptographic primitives: using a “secret sharing” mechanism, the secret key is split across multiple "parties", such that, even if some (up to a threshold f out of n) of these parties are corrupted, the key secrecy...