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 Two (2) other block cipher algorithms were previously approved: DES and Skipjack; however, their approval has been withdrawn.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:...

Message Authentication Codes MAC

The message authentication code (MAC) is generated from an associated message as a method for assuring the integrity of the message and the authenticity of the source of the message. A secret key to the generation algorithm must be established between the originator of the message and its intended receiver(s). Approved Algorithms Currently, there are three (3) approved* general purpose MAC algorithms: HMAC, KMAC and CMAC. Keyed-Hash Message Authentication Code (HMAC) FIPS 198-1, The...

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...