EnRUPT

EnRUPT is a block cipher and a family of cryptographic algorithms based on XXTEA.^[1][5] EnRUPT hash function was submitted to SHA-3 competition but it wasn't selected to the second round.

EnRUPT

One round of EnRUPT[1]
General
First published	2008
Derived from	Corrected Block TEA
Cipher detail
Key sizes	variable
Block sizes	arbitrary, at least two words (64 bits)
Structure	Unbalanced Feistel Network
Rounds	8 * (plaintext words) + 4 * (key words)
Best public cryptanalysis
2480 complexity meet-in-the-middle preimage attack against EnRUPT hash,[2] collision attack with 240 time complexity[3] Chosen plaintext attack with 215 queries against EnRUPT block cipher[4]